[RISCV] Add isel support for scalar STRICT_FADD/FSUB/FMUL/FDIV/FSQRT.

Test that STRICT_FMINNUM/FMAXNUM are lowered to libcalls for f32/f64.
The RISC-V instructions don't match the behavior of fmin/fmax libcalls
with respect to SNaN.

Promoting FMINNUM/FMAXNUM for f16 needs more work outside of the
RISC-V backend.

Reviewed By: asb, arcbbb

Differential Revision: https://reviews.llvm.org/D115680

7 files changed, 1862 insertions, 27 deletions

diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 0a2177aa76a6..1464cd4f2a56 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -330,6 +330,12 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::LLRINT, MVT::f16, Legal);
     setOperationAction(ISD::LROUND, MVT::f16, Legal);
     setOperationAction(ISD::LLROUND, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FADD, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FMA, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FSUB, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FMUL, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FDIV, MVT::f16, Legal);
+    setOperationAction(ISD::STRICT_FSQRT, MVT::f16, Legal);
     for (auto CC : FPCCToExpand)
       setCondCodeAction(CC, MVT::f16, Expand);
     setOperationAction(ISD::SELECT_CC, MVT::f16, Expand);
@@ -367,6 +373,12 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::LLRINT, MVT::f32, Legal);
     setOperationAction(ISD::LROUND, MVT::f32, Legal);
     setOperationAction(ISD::LLROUND, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FADD, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FMA, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FSUB, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FMUL, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FDIV, MVT::f32, Legal);
+    setOperationAction(ISD::STRICT_FSQRT, MVT::f32, Legal);
     for (auto CC : FPCCToExpand)
       setCondCodeAction(CC, MVT::f32, Expand);
     setOperationAction(ISD::SELECT_CC, MVT::f32, Expand);
@@ -388,6 +400,12 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::LLRINT, MVT::f64, Legal);
     setOperationAction(ISD::LROUND, MVT::f64, Legal);
     setOperationAction(ISD::LLROUND, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FMA, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FADD, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FSUB, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FMUL, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FDIV, MVT::f64, Legal);
+    setOperationAction(ISD::STRICT_FSQRT, MVT::f64, Legal);
     for (auto CC : FPCCToExpand)
       setCondCodeAction(CC, MVT::f64, Expand);
     setOperationAction(ISD::SELECT_CC, MVT::f64, Expand);
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoD.td b/llvm/lib/Target/RISCV/RISCVInstrInfoD.td
index 529bcaf92ca9..f328972e75c5 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoD.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoD.td
@@ -192,12 +192,12 @@ def : Pat<(fpextend FPR32:$rs1), (FCVT_D_S FPR32:$rs1)>;
 
 /// Float arithmetic operations
 
-def : PatFpr64Fpr64DynFrm<fadd, FADD_D>;
-def : PatFpr64Fpr64DynFrm<fsub, FSUB_D>;
-def : PatFpr64Fpr64DynFrm<fmul, FMUL_D>;
-def : PatFpr64Fpr64DynFrm<fdiv, FDIV_D>;
+def : PatFpr64Fpr64DynFrm<any_fadd, FADD_D>;
+def : PatFpr64Fpr64DynFrm<any_fsub, FSUB_D>;
+def : PatFpr64Fpr64DynFrm<any_fmul, FMUL_D>;
+def : PatFpr64Fpr64DynFrm<any_fdiv, FDIV_D>;
 
-def : Pat<(fsqrt FPR64:$rs1), (FSQRT_D FPR64:$rs1, 0b111)>;
+def : Pat<(any_fsqrt FPR64:$rs1), (FSQRT_D FPR64:$rs1, 0b111)>;
 
 def : Pat<(fneg FPR64:$rs1), (FSGNJN_D $rs1, $rs1)>;
 def : Pat<(fabs FPR64:$rs1), (FSGNJX_D $rs1, $rs1)>;
@@ -209,19 +209,19 @@ def : Pat<(fcopysign FPR32:$rs1, FPR64:$rs2), (FSGNJ_S $rs1, (FCVT_S_D $rs2,
                                                               0b111))>;
 
 // fmadd: rs1 * rs2 + rs3
-def : Pat<(fma FPR64:$rs1, FPR64:$rs2, FPR64:$rs3),
+def : Pat<(any_fma FPR64:$rs1, FPR64:$rs2, FPR64:$rs3),
           (FMADD_D $rs1, $rs2, $rs3, 0b111)>;
 
 // fmsub: rs1 * rs2 - rs3
-def : Pat<(fma FPR64:$rs1, FPR64:$rs2, (fneg FPR64:$rs3)),
+def : Pat<(any_fma FPR64:$rs1, FPR64:$rs2, (fneg FPR64:$rs3)),
           (FMSUB_D FPR64:$rs1, FPR64:$rs2, FPR64:$rs3, 0b111)>;
 
 // fnmsub: -rs1 * rs2 + rs3
-def : Pat<(fma (fneg FPR64:$rs1), FPR64:$rs2, FPR64:$rs3),
+def : Pat<(any_fma (fneg FPR64:$rs1), FPR64:$rs2, FPR64:$rs3),
           (FNMSUB_D FPR64:$rs1, FPR64:$rs2, FPR64:$rs3, 0b111)>;
 
 // fnmadd: -rs1 * rs2 - rs3
-def : Pat<(fma (fneg FPR64:$rs1), FPR64:$rs2, (fneg FPR64:$rs3)),
+def : Pat<(any_fma (fneg FPR64:$rs1), FPR64:$rs2, (fneg FPR64:$rs3)),
           (FNMADD_D FPR64:$rs1, FPR64:$rs2, FPR64:$rs3, 0b111)>;
 
 // The ratified 20191213 ISA spec defines fmin and fmax in a way that matches
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoF.td b/llvm/lib/Target/RISCV/RISCVInstrInfoF.td
index 11f31c109c6a..b8f71d753614 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoF.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoF.td
@@ -313,12 +313,12 @@ def : Pat<(f32 (fpimm0)), (FMV_W_X X0)>;
 
 /// Float arithmetic operations
 
-def : PatFpr32Fpr32DynFrm<fadd, FADD_S>;
-def : PatFpr32Fpr32DynFrm<fsub, FSUB_S>;
-def : PatFpr32Fpr32DynFrm<fmul, FMUL_S>;
-def : PatFpr32Fpr32DynFrm<fdiv, FDIV_S>;
+def : PatFpr32Fpr32DynFrm<any_fadd, FADD_S>;
+def : PatFpr32Fpr32DynFrm<any_fsub, FSUB_S>;
+def : PatFpr32Fpr32DynFrm<any_fmul, FMUL_S>;
+def : PatFpr32Fpr32DynFrm<any_fdiv, FDIV_S>;
 
-def : Pat<(fsqrt FPR32:$rs1), (FSQRT_S FPR32:$rs1, 0b111)>;
+def : Pat<(any_fsqrt FPR32:$rs1), (FSQRT_S FPR32:$rs1, 0b111)>;
 
 def : Pat<(fneg FPR32:$rs1), (FSGNJN_S $rs1, $rs1)>;
 def : Pat<(fabs FPR32:$rs1), (FSGNJX_S $rs1, $rs1)>;
@@ -327,19 +327,19 @@ def : PatFpr32Fpr32<fcopysign, FSGNJ_S>;
 def : Pat<(fcopysign FPR32:$rs1, (fneg FPR32:$rs2)), (FSGNJN_S $rs1, $rs2)>;
 
 // fmadd: rs1 * rs2 + rs3
-def : Pat<(fma FPR32:$rs1, FPR32:$rs2, FPR32:$rs3),
+def : Pat<(any_fma FPR32:$rs1, FPR32:$rs2, FPR32:$rs3),
           (FMADD_S $rs1, $rs2, $rs3, 0b111)>;
 
 // fmsub: rs1 * rs2 - rs3
-def : Pat<(fma FPR32:$rs1, FPR32:$rs2, (fneg FPR32:$rs3)),
+def : Pat<(any_fma FPR32:$rs1, FPR32:$rs2, (fneg FPR32:$rs3)),
           (FMSUB_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;
 
 // fnmsub: -rs1 * rs2 + rs3
-def : Pat<(fma (fneg FPR32:$rs1), FPR32:$rs2, FPR32:$rs3),
+def : Pat<(any_fma (fneg FPR32:$rs1), FPR32:$rs2, FPR32:$rs3),
           (FNMSUB_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;
 
 // fnmadd: -rs1 * rs2 - rs3
-def : Pat<(fma (fneg FPR32:$rs1), FPR32:$rs2, (fneg FPR32:$rs3)),
+def : Pat<(any_fma (fneg FPR32:$rs1), FPR32:$rs2, (fneg FPR32:$rs3)),
           (FNMADD_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;
 
 // The ratified 20191213 ISA spec defines fmin and fmax in a way that matches
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoZfh.td b/llvm/lib/Target/RISCV/RISCVInstrInfoZfh.td
index 9b07e13885e3..76e0ea6f093b 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoZfh.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoZfh.td
@@ -215,12 +215,12 @@ def : Pat<(f16 (fpimm0)), (FMV_H_X X0)>;
 
 /// Float arithmetic operations
 
-def : PatFpr16Fpr16DynFrm<fadd, FADD_H>;
-def : PatFpr16Fpr16DynFrm<fsub, FSUB_H>;
-def : PatFpr16Fpr16DynFrm<fmul, FMUL_H>;
-def : PatFpr16Fpr16DynFrm<fdiv, FDIV_H>;
+def : PatFpr16Fpr16DynFrm<any_fadd, FADD_H>;
+def : PatFpr16Fpr16DynFrm<any_fsub, FSUB_H>;
+def : PatFpr16Fpr16DynFrm<any_fmul, FMUL_H>;
+def : PatFpr16Fpr16DynFrm<any_fdiv, FDIV_H>;
 
-def : Pat<(fsqrt FPR16:$rs1), (FSQRT_H FPR16:$rs1, 0b111)>;
+def : Pat<(any_fsqrt FPR16:$rs1), (FSQRT_H FPR16:$rs1, 0b111)>;
 
 def : Pat<(fneg FPR16:$rs1), (FSGNJN_H $rs1, $rs1)>;
 def : Pat<(fabs FPR16:$rs1), (FSGNJX_H $rs1, $rs1)>;
@@ -232,19 +232,19 @@ def : Pat<(fcopysign FPR16:$rs1, FPR32:$rs2),
 def : Pat<(fcopysign FPR32:$rs1, FPR16:$rs2), (FSGNJ_S $rs1, (FCVT_S_H $rs2))>;
 
 // fmadd: rs1 * rs2 + rs3
-def : Pat<(fma FPR16:$rs1, FPR16:$rs2, FPR16:$rs3),
+def : Pat<(any_fma FPR16:$rs1, FPR16:$rs2, FPR16:$rs3),
           (FMADD_H $rs1, $rs2, $rs3, 0b111)>;
 
 // fmsub: rs1 * rs2 - rs3
-def : Pat<(fma FPR16:$rs1, FPR16:$rs2, (fneg FPR16:$rs3)),
+def : Pat<(any_fma FPR16:$rs1, FPR16:$rs2, (fneg FPR16:$rs3)),
           (FMSUB_H FPR16:$rs1, FPR16:$rs2, FPR16:$rs3, 0b111)>;
 
 // fnmsub: -rs1 * rs2 + rs3
-def : Pat<(fma (fneg FPR16:$rs1), FPR16:$rs2, FPR16:$rs3),
+def : Pat<(any_fma (fneg FPR16:$rs1), FPR16:$rs2, FPR16:$rs3),
           (FNMSUB_H FPR16:$rs1, FPR16:$rs2, FPR16:$rs3, 0b111)>;
 
 // fnmadd: -rs1 * rs2 - rs3
-def : Pat<(fma (fneg FPR16:$rs1), FPR16:$rs2, (fneg FPR16:$rs3)),
+def : Pat<(any_fma (fneg FPR16:$rs1), FPR16:$rs2, (fneg FPR16:$rs3)),
           (FNMADD_H FPR16:$rs1, FPR16:$rs2, FPR16:$rs3, 0b111)>;
 
 // The ratified 20191213 ISA spec defines fmin and fmax in a way that matches
diff --git a/llvm/test/CodeGen/RISCV/double-arith-strict.ll b/llvm/test/CodeGen/RISCV/double-arith-strict.ll
new file mode 100644
index 000000000000..80d01567def5
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/double-arith-strict.ll
@@ -0,0 +1,880 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV32IFD %s
+; RUN: llc -mtriple=riscv64 -mattr=+d -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV64IFD %s
+; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV32I %s
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV64I %s
+
+define double @fadd_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fadd_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    fadd.d ft0, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fadd_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fadd.d ft0, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fadd_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fadd_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.fadd.f64(double %a, double %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.fadd.f64(double, double, metadata, metadata)
+
+define double @fsub_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fsub_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    fsub.d ft0, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fsub_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fsub.d ft0, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fsub_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __subdf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fsub_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __subdf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.fsub.f64(double %a, double %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.fsub.f64(double, double, metadata, metadata)
+
+define double @fmul_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fmul_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    fmul.d ft0, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fmul_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fmul.d ft0, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fmul_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __muldf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmul_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __muldf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.fmul.f64(double %a, double %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.fmul.f64(double, double, metadata, metadata)
+
+define double @fdiv_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fdiv_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    fdiv.d ft0, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fdiv_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fdiv.d ft0, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fdiv_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __divdf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fdiv_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __divdf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.fdiv.f64(double %a, double %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.fdiv.f64(double, double, metadata, metadata)
+
+define double @fsqrt_d(double %a) nounwind strictfp {
+; RV32IFD-LABEL: fsqrt_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    fsqrt.d ft0, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fsqrt_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a0
+; RV64IFD-NEXT:    fsqrt.d ft0, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fsqrt_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call sqrt@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fsqrt_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call sqrt@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.sqrt.f64(double %a, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)
+
+define double @fmin_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fmin_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32IFD-NEXT:    call fmin@plt
+; RV32IFD-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fmin_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    addi sp, sp, -16
+; RV64IFD-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64IFD-NEXT:    call fmin@plt
+; RV64IFD-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64IFD-NEXT:    addi sp, sp, 16
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fmin_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fmin@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmin_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fmin@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.minnum.f64(double %a, double %b, metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.minnum.f64(double, double, metadata) strictfp
+
+define double @fmax_d(double %a, double %b) nounwind strictfp {
+; RV32IFD-LABEL: fmax_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32IFD-NEXT:    call fmax@plt
+; RV32IFD-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fmax_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    addi sp, sp, -16
+; RV64IFD-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64IFD-NEXT:    call fmax@plt
+; RV64IFD-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64IFD-NEXT:    addi sp, sp, 16
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fmax_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fmax@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmax_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fmax@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.maxnum.f64(double %a, double %b, metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.maxnum.f64(double, double, metadata) strictfp
+
+define double @fmadd_d(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fmadd_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fmadd.d ft0, ft2, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fmadd_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a2
+; RV64IFD-NEXT:    fmv.d.x ft1, a1
+; RV64IFD-NEXT:    fmv.d.x ft2, a0
+; RV64IFD-NEXT:    fmadd.d ft0, ft2, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fmadd_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmadd_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %a, double %b, double %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+declare double @llvm.experimental.constrained.fma.f64(double, double, double, metadata, metadata) strictfp
+
+define double @fmsub_d(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fmsub_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fcvt.d.w ft3, zero
+; RV32IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV32IFD-NEXT:    fmsub.d ft0, ft1, ft0, ft2
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fmsub_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fmv.d.x ft2, a2
+; RV64IFD-NEXT:    fmv.d.x ft3, zero
+; RV64IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV64IFD-NEXT:    fmsub.d ft0, ft1, ft0, ft2
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fmsub_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -32
+; RV32I-NEXT:    sw ra, 28(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 24(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 20(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 16(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s3, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s2, a3
+; RV32I-NEXT:    mv s3, a2
+; RV32I-NEXT:    mv s0, a1
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, a4
+; RV32I-NEXT:    mv a1, a5
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv a4, a0
+; RV32I-NEXT:    lui a0, 524288
+; RV32I-NEXT:    xor a5, a1, a0
+; RV32I-NEXT:    mv a0, s1
+; RV32I-NEXT:    mv a1, s0
+; RV32I-NEXT:    mv a2, s3
+; RV32I-NEXT:    mv a3, s2
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 28(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 24(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 20(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 16(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s3, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 32
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmsub_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a1
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    li a1, -1
+; RV64I-NEXT:    slli a1, a1, 63
+; RV64I-NEXT:    xor a2, a0, a1
+; RV64I-NEXT:    mv a0, s1
+; RV64I-NEXT:    mv a1, s0
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %c_ = fadd double 0.0, %c ; avoid negation using xor
+  %negc = fneg double %c_
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %a, double %b, double %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+
+define double @fnmadd_d(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fnmadd_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fcvt.d.w ft3, zero
+; RV32IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV32IFD-NEXT:    fadd.d ft1, ft1, ft3
+; RV32IFD-NEXT:    fnmadd.d ft0, ft2, ft0, ft1
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fnmadd_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a1
+; RV64IFD-NEXT:    fmv.d.x ft1, a2
+; RV64IFD-NEXT:    fmv.d.x ft2, a0
+; RV64IFD-NEXT:    fmv.d.x ft3, zero
+; RV64IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV64IFD-NEXT:    fadd.d ft1, ft1, ft3
+; RV64IFD-NEXT:    fnmadd.d ft0, ft2, ft0, ft1
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fnmadd_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -32
+; RV32I-NEXT:    sw ra, 28(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 24(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 20(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 16(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s3, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s4, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s5, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s4, a5
+; RV32I-NEXT:    mv s5, a4
+; RV32I-NEXT:    mv s2, a3
+; RV32I-NEXT:    mv s3, a2
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv s0, a0
+; RV32I-NEXT:    mv s1, a1
+; RV32I-NEXT:    mv a0, s5
+; RV32I-NEXT:    mv a1, s4
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv a4, a0
+; RV32I-NEXT:    lui a0, 524288
+; RV32I-NEXT:    xor a2, s1, a0
+; RV32I-NEXT:    xor a5, a1, a0
+; RV32I-NEXT:    mv a0, s0
+; RV32I-NEXT:    mv a1, a2
+; RV32I-NEXT:    mv a2, s3
+; RV32I-NEXT:    mv a3, s2
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 28(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 24(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 20(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 16(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s3, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s4, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s5, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 32
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmadd_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s2, 0(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, s0
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    li a1, -1
+; RV64I-NEXT:    slli a2, a1, 63
+; RV64I-NEXT:    xor a1, s1, a2
+; RV64I-NEXT:    xor a2, a0, a2
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    mv a1, s2
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s2, 0(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %a_ = fadd double 0.0, %a
+  %c_ = fadd double 0.0, %c
+  %nega = fneg double %a_
+  %negc = fneg double %c_
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %nega, double %b, double %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+
+define double @fnmadd_d_2(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fnmadd_d_2:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fcvt.d.w ft3, zero
+; RV32IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV32IFD-NEXT:    fadd.d ft1, ft1, ft3
+; RV32IFD-NEXT:    fnmadd.d ft0, ft2, ft0, ft1
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fnmadd_d_2:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a0
+; RV64IFD-NEXT:    fmv.d.x ft1, a2
+; RV64IFD-NEXT:    fmv.d.x ft2, a1
+; RV64IFD-NEXT:    fmv.d.x ft3, zero
+; RV64IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV64IFD-NEXT:    fadd.d ft1, ft1, ft3
+; RV64IFD-NEXT:    fnmadd.d ft0, ft2, ft0, ft1
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fnmadd_d_2:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -32
+; RV32I-NEXT:    sw ra, 28(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 24(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 20(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 16(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s3, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s4, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s5, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s4, a5
+; RV32I-NEXT:    mv s1, a4
+; RV32I-NEXT:    mv s2, a1
+; RV32I-NEXT:    mv s3, a0
+; RV32I-NEXT:    mv a0, a2
+; RV32I-NEXT:    mv a1, a3
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv s5, a0
+; RV32I-NEXT:    mv s0, a1
+; RV32I-NEXT:    mv a0, s1
+; RV32I-NEXT:    mv a1, s4
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv a4, a0
+; RV32I-NEXT:    lui a0, 524288
+; RV32I-NEXT:    xor a3, s0, a0
+; RV32I-NEXT:    xor a5, a1, a0
+; RV32I-NEXT:    mv a0, s3
+; RV32I-NEXT:    mv a1, s2
+; RV32I-NEXT:    mv a2, s5
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 28(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 24(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 20(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 16(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s3, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s4, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s5, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 32
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmadd_d_2:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s2, 0(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, s0
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    li a1, -1
+; RV64I-NEXT:    slli a2, a1, 63
+; RV64I-NEXT:    xor a1, s1, a2
+; RV64I-NEXT:    xor a2, a0, a2
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s2, 0(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %b_ = fadd double 0.0, %b
+  %c_ = fadd double 0.0, %c
+  %negb = fneg double %b_
+  %negc = fneg double %c_
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %a, double %negb, double %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+
+define double @fnmsub_d(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fnmsub_d:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fcvt.d.w ft3, zero
+; RV32IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV32IFD-NEXT:    fnmsub.d ft0, ft2, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fnmsub_d:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a2
+; RV64IFD-NEXT:    fmv.d.x ft1, a1
+; RV64IFD-NEXT:    fmv.d.x ft2, a0
+; RV64IFD-NEXT:    fmv.d.x ft3, zero
+; RV64IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV64IFD-NEXT:    fnmsub.d ft0, ft2, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fnmsub_d:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -32
+; RV32I-NEXT:    sw ra, 28(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 24(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 20(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 16(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s3, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s2, a5
+; RV32I-NEXT:    mv s3, a4
+; RV32I-NEXT:    mv s0, a3
+; RV32I-NEXT:    mv s1, a2
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    lui a2, 524288
+; RV32I-NEXT:    xor a1, a1, a2
+; RV32I-NEXT:    mv a2, s1
+; RV32I-NEXT:    mv a3, s0
+; RV32I-NEXT:    mv a4, s3
+; RV32I-NEXT:    mv a5, s2
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 28(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 24(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 20(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 16(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s3, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 32
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmsub_d:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    li a1, -1
+; RV64I-NEXT:    slli a1, a1, 63
+; RV64I-NEXT:    xor a0, a0, a1
+; RV64I-NEXT:    mv a1, s1
+; RV64I-NEXT:    mv a2, s0
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %a_ = fadd double 0.0, %a
+  %nega = fneg double %a_
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %nega, double %b, double %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
+
+define double @fnmsub_d_2(double %a, double %b, double %c) nounwind strictfp {
+; RV32IFD-LABEL: fnmsub_d_2:
+; RV32IFD:       # %bb.0:
+; RV32IFD-NEXT:    addi sp, sp, -16
+; RV32IFD-NEXT:    sw a4, 8(sp)
+; RV32IFD-NEXT:    sw a5, 12(sp)
+; RV32IFD-NEXT:    fld ft0, 8(sp)
+; RV32IFD-NEXT:    sw a0, 8(sp)
+; RV32IFD-NEXT:    sw a1, 12(sp)
+; RV32IFD-NEXT:    fld ft1, 8(sp)
+; RV32IFD-NEXT:    sw a2, 8(sp)
+; RV32IFD-NEXT:    sw a3, 12(sp)
+; RV32IFD-NEXT:    fld ft2, 8(sp)
+; RV32IFD-NEXT:    fcvt.d.w ft3, zero
+; RV32IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV32IFD-NEXT:    fnmsub.d ft0, ft2, ft1, ft0
+; RV32IFD-NEXT:    fsd ft0, 8(sp)
+; RV32IFD-NEXT:    lw a0, 8(sp)
+; RV32IFD-NEXT:    lw a1, 12(sp)
+; RV32IFD-NEXT:    addi sp, sp, 16
+; RV32IFD-NEXT:    ret
+;
+; RV64IFD-LABEL: fnmsub_d_2:
+; RV64IFD:       # %bb.0:
+; RV64IFD-NEXT:    fmv.d.x ft0, a2
+; RV64IFD-NEXT:    fmv.d.x ft1, a0
+; RV64IFD-NEXT:    fmv.d.x ft2, a1
+; RV64IFD-NEXT:    fmv.d.x ft3, zero
+; RV64IFD-NEXT:    fadd.d ft2, ft2, ft3
+; RV64IFD-NEXT:    fnmsub.d ft0, ft2, ft1, ft0
+; RV64IFD-NEXT:    fmv.x.d a0, ft0
+; RV64IFD-NEXT:    ret
+;
+; RV32I-LABEL: fnmsub_d_2:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -32
+; RV32I-NEXT:    sw ra, 28(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 24(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 20(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 16(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s3, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s2, a5
+; RV32I-NEXT:    mv s3, a4
+; RV32I-NEXT:    mv s0, a1
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, a2
+; RV32I-NEXT:    mv a1, a3
+; RV32I-NEXT:    li a2, 0
+; RV32I-NEXT:    li a3, 0
+; RV32I-NEXT:    call __adddf3@plt
+; RV32I-NEXT:    mv a2, a0
+; RV32I-NEXT:    lui a0, 524288
+; RV32I-NEXT:    xor a3, a1, a0
+; RV32I-NEXT:    mv a0, s1
+; RV32I-NEXT:    mv a1, s0
+; RV32I-NEXT:    mv a4, s3
+; RV32I-NEXT:    mv a5, s2
+; RV32I-NEXT:    call fma@plt
+; RV32I-NEXT:    lw ra, 28(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 24(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 20(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 16(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s3, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 32
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmsub_d_2:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __adddf3@plt
+; RV64I-NEXT:    li a1, -1
+; RV64I-NEXT:    slli a1, a1, 63
+; RV64I-NEXT:    xor a1, a0, a1
+; RV64I-NEXT:    mv a0, s1
+; RV64I-NEXT:    mv a2, s0
+; RV64I-NEXT:    call fma@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %b_ = fadd double 0.0, %b
+  %negb = fneg double %b_
+  %1 = call double @llvm.experimental.constrained.fma.f64(double %a, double %negb, double %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret double %1
+}
diff --git a/llvm/test/CodeGen/RISCV/float-arith-strict.ll b/llvm/test/CodeGen/RISCV/float-arith-strict.ll
new file mode 100644
index 000000000000..e700080aeeed
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/float-arith-strict.ll
@@ -0,0 +1,715 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV32IF %s
+; RUN: llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV64IF %s
+; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV32I %s
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
+; RUN:   -disable-strictnode-mutation | FileCheck -check-prefix=RV64I %s
+
+define float @fadd_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fadd_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fadd.s ft0, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fadd_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fadd.s ft0, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fadd_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fadd_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.fadd.f32(float %a, float %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata)
+
+define float @fsub_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fsub_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fsub.s ft0, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fsub_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fsub.s ft0, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fsub_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __subsf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fsub_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __subsf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.fsub.f32(float %a, float %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata)
+
+define float @fmul_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fmul_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fmul.s ft0, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fmul_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fmul.s ft0, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fmul_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __mulsf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmul_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __mulsf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.fmul.f32(float, float, metadata, metadata)
+
+define float @fdiv_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fdiv_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fdiv.s ft0, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fdiv_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fdiv.s ft0, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fdiv_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call __divsf3@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fdiv_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call __divsf3@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.fdiv.f32(float %a, float %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.fdiv.f32(float, float, metadata, metadata)
+
+define float @fsqrt_s(float %a) nounwind strictfp {
+; RV32IF-LABEL: fsqrt_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a0
+; RV32IF-NEXT:    fsqrt.s ft0, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fsqrt_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a0
+; RV64IF-NEXT:    fsqrt.s ft0, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fsqrt_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call sqrtf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fsqrt_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call sqrtf@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.sqrt.f32(float %a, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata)
+
+define float @fmin_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fmin_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    addi sp, sp, -16
+; RV32IF-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32IF-NEXT:    call fminf@plt
+; RV32IF-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32IF-NEXT:    addi sp, sp, 16
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fmin_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    addi sp, sp, -16
+; RV64IF-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64IF-NEXT:    call fminf@plt
+; RV64IF-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64IF-NEXT:    addi sp, sp, 16
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fmin_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fminf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmin_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fminf@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.minnum.f32(float %a, float %b, metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.minnum.f32(float, float, metadata) strictfp
+
+define float @fmax_s(float %a, float %b) nounwind strictfp {
+; RV32IF-LABEL: fmax_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    addi sp, sp, -16
+; RV32IF-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32IF-NEXT:    call fmaxf@plt
+; RV32IF-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32IF-NEXT:    addi sp, sp, 16
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fmax_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    addi sp, sp, -16
+; RV64IF-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64IF-NEXT:    call fmaxf@plt
+; RV64IF-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64IF-NEXT:    addi sp, sp, 16
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fmax_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fmaxf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmax_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fmaxf@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.maxnum.f32(float %a, float %b, metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.maxnum.f32(float, float, metadata) strictfp
+
+define float @fmadd_s(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fmadd_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a2
+; RV32IF-NEXT:    fmv.w.x ft1, a1
+; RV32IF-NEXT:    fmv.w.x ft2, a0
+; RV32IF-NEXT:    fmadd.s ft0, ft2, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fmadd_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a2
+; RV64IF-NEXT:    fmv.w.x ft1, a1
+; RV64IF-NEXT:    fmv.w.x ft2, a0
+; RV64IF-NEXT:    fmadd.s ft0, ft2, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fmadd_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmadd_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -16
+; RV64I-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 16
+; RV64I-NEXT:    ret
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %a, float %b, float %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+declare float @llvm.experimental.constrained.fma.f32(float, float, float, metadata, metadata) strictfp
+
+define float @fmsub_s(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fmsub_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fmv.w.x ft2, a2
+; RV32IF-NEXT:    fmv.w.x ft3, zero
+; RV32IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV32IF-NEXT:    fmsub.s ft0, ft1, ft0, ft2
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fmsub_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fmv.w.x ft2, a2
+; RV64IF-NEXT:    fmv.w.x ft3, zero
+; RV64IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV64IF-NEXT:    fmsub.s ft0, ft1, ft0, ft2
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fmsub_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s0, a1
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, a2
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lui a1, 524288
+; RV32I-NEXT:    xor a2, a0, a1
+; RV32I-NEXT:    mv a0, s1
+; RV32I-NEXT:    mv a1, s0
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fmsub_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a1
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, a2
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    lui a1, 524288
+; RV64I-NEXT:    xor a2, a0, a1
+; RV64I-NEXT:    mv a0, s1
+; RV64I-NEXT:    mv a1, s0
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %c_ = fadd float 0.0, %c ; avoid negation using xor
+  %negc = fneg float %c_
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %a, float %b, float %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+
+define float @fnmadd_s(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fnmadd_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a1
+; RV32IF-NEXT:    fmv.w.x ft1, a2
+; RV32IF-NEXT:    fmv.w.x ft2, a0
+; RV32IF-NEXT:    fmv.w.x ft3, zero
+; RV32IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV32IF-NEXT:    fadd.s ft1, ft1, ft3
+; RV32IF-NEXT:    fnmadd.s ft0, ft2, ft0, ft1
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fnmadd_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a1
+; RV64IF-NEXT:    fmv.w.x ft1, a2
+; RV64IF-NEXT:    fmv.w.x ft2, a0
+; RV64IF-NEXT:    fmv.w.x ft3, zero
+; RV64IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV64IF-NEXT:    fadd.s ft1, ft1, ft3
+; RV64IF-NEXT:    fnmadd.s ft0, ft2, ft0, ft1
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fnmadd_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 0(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s0, a2
+; RV32I-NEXT:    mv s2, a1
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, s0
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lui a2, 524288
+; RV32I-NEXT:    xor a1, s1, a2
+; RV32I-NEXT:    xor a2, a0, a2
+; RV32I-NEXT:    mv a0, a1
+; RV32I-NEXT:    mv a1, s2
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 0(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmadd_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s2, 0(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s2, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, s0
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    lui a2, 524288
+; RV64I-NEXT:    xor a1, s1, a2
+; RV64I-NEXT:    xor a2, a0, a2
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    mv a1, s2
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s2, 0(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %a_ = fadd float 0.0, %a
+  %c_ = fadd float 0.0, %c
+  %nega = fneg float %a_
+  %negc = fneg float %c_
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %nega, float %b, float %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+
+define float @fnmadd_s_2(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fnmadd_s_2:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a0
+; RV32IF-NEXT:    fmv.w.x ft1, a2
+; RV32IF-NEXT:    fmv.w.x ft2, a1
+; RV32IF-NEXT:    fmv.w.x ft3, zero
+; RV32IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV32IF-NEXT:    fadd.s ft1, ft1, ft3
+; RV32IF-NEXT:    fnmadd.s ft0, ft2, ft0, ft1
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fnmadd_s_2:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a0
+; RV64IF-NEXT:    fmv.w.x ft1, a2
+; RV64IF-NEXT:    fmv.w.x ft2, a1
+; RV64IF-NEXT:    fmv.w.x ft3, zero
+; RV64IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV64IF-NEXT:    fadd.s ft1, ft1, ft3
+; RV64IF-NEXT:    fnmadd.s ft0, ft2, ft0, ft1
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fnmadd_s_2:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s2, 0(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s0, a2
+; RV32I-NEXT:    mv s2, a0
+; RV32I-NEXT:    mv a0, a1
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, s0
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lui a2, 524288
+; RV32I-NEXT:    xor a1, s1, a2
+; RV32I-NEXT:    xor a2, a0, a2
+; RV32I-NEXT:    mv a0, s2
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s2, 0(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmadd_s_2:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s2, 0(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s2, a0
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, s0
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    lui a2, 524288
+; RV64I-NEXT:    xor a1, s1, a2
+; RV64I-NEXT:    xor a2, a0, a2
+; RV64I-NEXT:    mv a0, s2
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s2, 0(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %b_ = fadd float 0.0, %b
+  %c_ = fadd float 0.0, %c
+  %negb = fneg float %b_
+  %negc = fneg float %c_
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %a, float %negb, float %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+
+define float @fnmsub_s(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fnmsub_s:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a2
+; RV32IF-NEXT:    fmv.w.x ft1, a1
+; RV32IF-NEXT:    fmv.w.x ft2, a0
+; RV32IF-NEXT:    fmv.w.x ft3, zero
+; RV32IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV32IF-NEXT:    fnmsub.s ft0, ft2, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fnmsub_s:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a2
+; RV64IF-NEXT:    fmv.w.x ft1, a1
+; RV64IF-NEXT:    fmv.w.x ft2, a0
+; RV64IF-NEXT:    fmv.w.x ft3, zero
+; RV64IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV64IF-NEXT:    fnmsub.s ft0, ft2, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fnmsub_s:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s0, a2
+; RV32I-NEXT:    mv s1, a1
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lui a1, 524288
+; RV32I-NEXT:    xor a0, a0, a1
+; RV32I-NEXT:    mv a1, s1
+; RV32I-NEXT:    mv a2, s0
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmsub_s:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s1, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    lui a1, 524288
+; RV64I-NEXT:    xor a0, a0, a1
+; RV64I-NEXT:    mv a1, s1
+; RV64I-NEXT:    mv a2, s0
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %a_ = fadd float 0.0, %a
+  %nega = fneg float %a_
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %nega, float %b, float %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
+
+define float @fnmsub_s_2(float %a, float %b, float %c) nounwind strictfp {
+; RV32IF-LABEL: fnmsub_s_2:
+; RV32IF:       # %bb.0:
+; RV32IF-NEXT:    fmv.w.x ft0, a2
+; RV32IF-NEXT:    fmv.w.x ft1, a0
+; RV32IF-NEXT:    fmv.w.x ft2, a1
+; RV32IF-NEXT:    fmv.w.x ft3, zero
+; RV32IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV32IF-NEXT:    fnmsub.s ft0, ft2, ft1, ft0
+; RV32IF-NEXT:    fmv.x.w a0, ft0
+; RV32IF-NEXT:    ret
+;
+; RV64IF-LABEL: fnmsub_s_2:
+; RV64IF:       # %bb.0:
+; RV64IF-NEXT:    fmv.w.x ft0, a2
+; RV64IF-NEXT:    fmv.w.x ft1, a0
+; RV64IF-NEXT:    fmv.w.x ft2, a1
+; RV64IF-NEXT:    fmv.w.x ft3, zero
+; RV64IF-NEXT:    fadd.s ft2, ft2, ft3
+; RV64IF-NEXT:    fnmsub.s ft0, ft2, ft1, ft0
+; RV64IF-NEXT:    fmv.x.w a0, ft0
+; RV64IF-NEXT:    ret
+;
+; RV32I-LABEL: fnmsub_s_2:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi sp, sp, -16
+; RV32I-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    sw s1, 4(sp) # 4-byte Folded Spill
+; RV32I-NEXT:    mv s0, a2
+; RV32I-NEXT:    mv s1, a0
+; RV32I-NEXT:    mv a0, a1
+; RV32I-NEXT:    li a1, 0
+; RV32I-NEXT:    call __addsf3@plt
+; RV32I-NEXT:    lui a1, 524288
+; RV32I-NEXT:    xor a1, a0, a1
+; RV32I-NEXT:    mv a0, s1
+; RV32I-NEXT:    mv a2, s0
+; RV32I-NEXT:    call fmaf@plt
+; RV32I-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    lw s1, 4(sp) # 4-byte Folded Reload
+; RV32I-NEXT:    addi sp, sp, 16
+; RV32I-NEXT:    ret
+;
+; RV64I-LABEL: fnmsub_s_2:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi sp, sp, -32
+; RV64I-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    sd s1, 8(sp) # 8-byte Folded Spill
+; RV64I-NEXT:    mv s0, a2
+; RV64I-NEXT:    mv s1, a0
+; RV64I-NEXT:    mv a0, a1
+; RV64I-NEXT:    li a1, 0
+; RV64I-NEXT:    call __addsf3@plt
+; RV64I-NEXT:    lui a1, 524288
+; RV64I-NEXT:    xor a1, a0, a1
+; RV64I-NEXT:    mv a0, s1
+; RV64I-NEXT:    mv a2, s0
+; RV64I-NEXT:    call fmaf@plt
+; RV64I-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    ld s1, 8(sp) # 8-byte Folded Reload
+; RV64I-NEXT:    addi sp, sp, 32
+; RV64I-NEXT:    ret
+  %b_ = fadd float 0.0, %b
+  %negb = fneg float %b_
+  %1 = call float @llvm.experimental.constrained.fma.f32(float %a, float %negb, float %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret float %1
+}
diff --git a/llvm/test/CodeGen/RISCV/half-arith-strict.ll b/llvm/test/CodeGen/RISCV/half-arith-strict.ll
new file mode 100644
index 000000000000..9c094c6676fe
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/half-arith-strict.ll
@@ -0,0 +1,222 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+experimental-zfh -verify-machineinstrs \
+; RUN:   -disable-strictnode-mutation -target-abi ilp32f < %s \
+; RUN:    | FileCheck -check-prefix=RV32IZFH %s
+; RUN: llc -mtriple=riscv64 -mattr=+experimental-zfh -verify-machineinstrs \
+; RUN:   -disable-strictnode-mutation -target-abi lp64f < %s \
+; RUN:   | FileCheck -check-prefix=RV64IZFH %s
+
+; FIXME: We can't test without Zfh because soft promote legalization isn't
+; implemented in SelectionDAG for STRICT nodes.
+
+define half @fadd_h(half %a, half %b) nounwind strictfp {
+; RV32IZFH-LABEL: fadd_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fadd.h fa0, fa0, fa1
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fadd_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fadd.h fa0, fa0, fa1
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.fadd.f16(half %a, half %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.fadd.f16(half, half, metadata, metadata)
+
+define half @fsub_h(half %a, half %b) nounwind strictfp {
+; RV32IZFH-LABEL: fsub_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fsub.h fa0, fa0, fa1
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fsub_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fsub.h fa0, fa0, fa1
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.fsub.f16(half %a, half %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.fsub.f16(half, half, metadata, metadata)
+
+define half @fmul_h(half %a, half %b) nounwind strictfp {
+; RV32IZFH-LABEL: fmul_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmul.h fa0, fa0, fa1
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fmul_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmul.h fa0, fa0, fa1
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.fmul.f16(half %a, half %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.fmul.f16(half, half, metadata, metadata)
+
+define half @fdiv_h(half %a, half %b) nounwind strictfp {
+; RV32IZFH-LABEL: fdiv_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fdiv.h fa0, fa0, fa1
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fdiv_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fdiv.h fa0, fa0, fa1
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.fdiv.f16(half %a, half %b, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.fdiv.f16(half, half, metadata, metadata)
+
+define half @fsqrt_h(half %a) nounwind strictfp {
+; RV32IZFH-LABEL: fsqrt_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fsqrt.h fa0, fa0
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fsqrt_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fsqrt.h fa0, fa0
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.sqrt.f16(half %a, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.sqrt.f16(half, metadata, metadata)
+
+; FIXME: fminnum/fmaxnum need libcalls to handle SNaN, but we don't have f16
+; libcalls and don't support promotion yet.
+;define half @fmin_h(half %a, half %b) nounwind strictfp {
+;  %1 = call half @llvm.experimental.constrained.minnum.f16(half %a, half %b, metadata !"fpexcept.strict") strictfp
+;  ret half %1
+;}
+;declare half @llvm.experimental.constrained.minnum.f16(half, half, metadata) strictfp
+;
+;define half @fmax_h(half %a, half %b) nounwind strictfp {
+;  %1 = call half @llvm.experimental.constrained.maxnum.f16(half %a, half %b, metadata !"fpexcept.strict") strictfp
+;  ret half %1
+;}
+;declare half @llvm.experimental.constrained.maxnum.f16(half, half, metadata) strictfp
+
+define half @fmadd_h(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fmadd_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmadd.h fa0, fa0, fa1, fa2
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fmadd_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmadd.h fa0, fa0, fa1, fa2
+; RV64IZFH-NEXT:    ret
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %a, half %b, half %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+declare half @llvm.experimental.constrained.fma.f16(half, half, half, metadata, metadata) strictfp
+
+define half @fmsub_h(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fmsub_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmv.h.x ft0, zero
+; RV32IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV32IZFH-NEXT:    fmsub.h fa0, fa0, fa1, ft0
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fmsub_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmv.h.x ft0, zero
+; RV64IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV64IZFH-NEXT:    fmsub.h fa0, fa0, fa1, ft0
+; RV64IZFH-NEXT:    ret
+  %c_ = fadd half 0.0, %c ; avoid negation using xor
+  %negc = fneg half %c_
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %a, half %b, half %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+
+define half @fnmadd_h(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fnmadd_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmv.h.x ft0, zero
+; RV32IZFH-NEXT:    fadd.h ft1, fa0, ft0
+; RV32IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV32IZFH-NEXT:    fnmadd.h fa0, ft1, fa1, ft0
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fnmadd_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmv.h.x ft0, zero
+; RV64IZFH-NEXT:    fadd.h ft1, fa0, ft0
+; RV64IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV64IZFH-NEXT:    fnmadd.h fa0, ft1, fa1, ft0
+; RV64IZFH-NEXT:    ret
+  %a_ = fadd half 0.0, %a
+  %c_ = fadd half 0.0, %c
+  %nega = fneg half %a_
+  %negc = fneg half %c_
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %nega, half %b, half %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+
+define half @fnmadd_h_2(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fnmadd_h_2:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmv.h.x ft0, zero
+; RV32IZFH-NEXT:    fadd.h ft1, fa1, ft0
+; RV32IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV32IZFH-NEXT:    fnmadd.h fa0, ft1, fa0, ft0
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fnmadd_h_2:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmv.h.x ft0, zero
+; RV64IZFH-NEXT:    fadd.h ft1, fa1, ft0
+; RV64IZFH-NEXT:    fadd.h ft0, fa2, ft0
+; RV64IZFH-NEXT:    fnmadd.h fa0, ft1, fa0, ft0
+; RV64IZFH-NEXT:    ret
+  %b_ = fadd half 0.0, %b
+  %c_ = fadd half 0.0, %c
+  %negb = fneg half %b_
+  %negc = fneg half %c_
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %a, half %negb, half %negc, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+
+define half @fnmsub_h(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fnmsub_h:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmv.h.x ft0, zero
+; RV32IZFH-NEXT:    fadd.h ft0, fa0, ft0
+; RV32IZFH-NEXT:    fnmsub.h fa0, ft0, fa1, fa2
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fnmsub_h:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmv.h.x ft0, zero
+; RV64IZFH-NEXT:    fadd.h ft0, fa0, ft0
+; RV64IZFH-NEXT:    fnmsub.h fa0, ft0, fa1, fa2
+; RV64IZFH-NEXT:    ret
+  %a_ = fadd half 0.0, %a
+  %nega = fneg half %a_
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %nega, half %b, half %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}
+
+define half @fnmsub_h_2(half %a, half %b, half %c) nounwind strictfp {
+; RV32IZFH-LABEL: fnmsub_h_2:
+; RV32IZFH:       # %bb.0:
+; RV32IZFH-NEXT:    fmv.h.x ft0, zero
+; RV32IZFH-NEXT:    fadd.h ft0, fa1, ft0
+; RV32IZFH-NEXT:    fnmsub.h fa0, ft0, fa0, fa2
+; RV32IZFH-NEXT:    ret
+;
+; RV64IZFH-LABEL: fnmsub_h_2:
+; RV64IZFH:       # %bb.0:
+; RV64IZFH-NEXT:    fmv.h.x ft0, zero
+; RV64IZFH-NEXT:    fadd.h ft0, fa1, ft0
+; RV64IZFH-NEXT:    fnmsub.h fa0, ft0, fa0, fa2
+; RV64IZFH-NEXT:    ret
+  %b_ = fadd half 0.0, %b
+  %negb = fneg half %b_
+  %1 = call half @llvm.experimental.constrained.fma.f16(half %a, half %negb, half %c, metadata !"round.dynamic", metadata !"fpexcept.strict") strictfp
+  ret half %1
+}