diff options
Diffstat (limited to 'compiler/GHC/CmmToAsm/X86/Instr.hs')
| -rw-r--r-- | compiler/GHC/CmmToAsm/X86/Instr.hs | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/compiler/GHC/CmmToAsm/X86/Instr.hs b/compiler/GHC/CmmToAsm/X86/Instr.hs index ccb3ce09ba..b4e93a1c5d 100644 --- a/compiler/GHC/CmmToAsm/X86/Instr.hs +++ b/compiler/GHC/CmmToAsm/X86/Instr.hs @@ -12,6 +12,7 @@ module GHC.CmmToAsm.X86.Instr ( Instr(..) , Operand(..) , PrefetchVariant(..) + , FMAPermutation(..) , JumpDest(..) , getJumpDestBlockId , canShortcut @@ -272,6 +273,10 @@ data Instr | CVTSI2SS Format Operand Reg -- I32/I64 to F32 | CVTSI2SD Format Operand Reg -- I32/I64 to F64 + -- | FMA3 fused multiply-add operations. + | FMA3 Format FMASign FMAPermutation Operand Reg Reg + -- src1 (r/m), src2 (r), dst (r) + -- use ADD, SUB, and SQRT for arithmetic. In both cases, operands -- are Operand Reg. @@ -351,7 +356,7 @@ data Operand | OpImm Imm -- immediate value | OpAddr AddrMode -- memory reference - +data FMAPermutation = FMA132 | FMA213 | FMA231 -- | Returns which registers are read and written as a (read, written) -- pair. @@ -438,6 +443,8 @@ regUsageOfInstr platform instr PDEP _ src mask dst -> mkRU (use_R src $ use_R mask []) [dst] PEXT _ src mask dst -> mkRU (use_R src $ use_R mask []) [dst] + FMA3 _ _ _ src1 src2 dst -> usageFMA src1 src2 dst + -- note: might be a better way to do this PREFETCH _ _ src -> mkRU (use_R src []) [] LOCK i -> regUsageOfInstr platform i @@ -482,6 +489,15 @@ regUsageOfInstr platform instr usageRMM (OpReg src) (OpAddr ea) (OpReg reg) = mkRU (use_EA ea [src, reg]) [reg] usageRMM _ _ _ = panic "X86.RegInfo.usageRMM: no match" + -- 3 operand form of FMA instructions. + usageFMA :: Operand -> Reg -> Reg -> RegUsage + usageFMA (OpReg src1) src2 dst + = mkRU [src1, src2, dst] [dst] + usageFMA (OpAddr ea1) src2 dst + = mkRU (use_EA ea1 [src2, dst]) [dst] + usageFMA _ _ _ + = panic "X86.RegInfo.usageFMA: no match" + -- 1 operand form; operand Modified usageM :: Operand -> RegUsage usageM (OpReg reg) = mkRU [reg] [reg] @@ -561,6 +577,8 @@ patchRegsOfInstr instr env JMP op regs -> JMP (patchOp op) regs JMP_TBL op ids s lbl -> JMP_TBL (patchOp op) ids s lbl + FMA3 fmt perm var x1 x2 x3 -> patch3 (FMA3 fmt perm var) x1 x2 x3 + -- literally only support storing the top x87 stack value st(0) X87Store fmt dst -> X87Store fmt (lookupAddr dst) @@ -612,6 +630,8 @@ patchRegsOfInstr instr env patch1 insn op = insn $! patchOp op patch2 :: (Operand -> Operand -> a) -> Operand -> Operand -> a patch2 insn src dst = (insn $! patchOp src) $! patchOp dst + patch3 :: (Operand -> Reg -> Reg -> a) -> Operand -> Reg -> Reg -> a + patch3 insn src1 src2 dst = ((insn $! patchOp src1) $! env src2) $! env dst patchOp (OpReg reg) = OpReg $! env reg patchOp (OpImm imm) = OpImm imm |