Revert "Currently the control of the eval-method is mixed with fast-math."llvmorg-16.0.0-rc4

Setting __FLT_EVAL_METHOD__ to -1 with fast-math will set
__GLIBC_FLT_EVAL_METHOD to 2 and long double ends up being used for
float_t and double_t. This creates some ABI breakage with various C libraries.
See details here: https://github.com/llvm/llvm-project/issues/60781

This reverts commit bbf0d1932a3c1be970ed8a580e51edf571b80fd5.

(cherry picked from commit 2f1264260b37e9bd79737181e459ae20e10c5fea)

1 files changed, 0 insertions, 117 deletions

diff --git a/clang/test/CodeGen/eval-method-fast-math.cpp b/clang/test/CodeGen/eval-method-fast-math.cpp
deleted file mode 100644
index 0b5b3780efa3..000000000000
--- a/clang/test/CodeGen/eval-method-fast-math.cpp
+++ /dev/null
@@ -1,117 +0,0 @@
-// RUN: %clang_cc1 -fexperimental-strict-floating-point  \
-// RUN: -triple x86_64-linux-gnu -emit-llvm -o - %s  \
-// RUN: | FileCheck %s -check-prefixes=CHECK
-
-// RUN: %clang_cc1 -triple i386--linux -emit-llvm -o - %s \
-// RUN: | FileCheck %s -check-prefixes=CHECK-EXT
-
-// RUN: %clang_cc1 -fexperimental-strict-floating-point  \
-// RUN: -mreassociate -freciprocal-math -ffp-contract=fast \
-// RUN: -ffast-math -triple x86_64-linux-gnu \
-// RUN: -emit-llvm -o - %s \
-// RUN: | FileCheck %s -check-prefixes=CHECK-FAST
-
-// RUN: %clang_cc1 -triple i386--linux -mreassociate -freciprocal-math \
-// RUN: -ffp-contract=fast -ffast-math -emit-llvm -o - %s \
-// RUN: | FileCheck %s -check-prefixes=CHECK-FAST
-
-float a = 1.0f, b = 2.0f, c = 3.0f;
-#pragma float_control(precise, off)
-float res2 = a + b + c;
-int val3 = __FLT_EVAL_METHOD__;
-#pragma float_control(precise, on)
-float res3 = a + b + c;
-int val4 = __FLT_EVAL_METHOD__;
-
-// CHECK: @val3 = global i32 -1
-// CHECK: @val4 = global i32 0
-
-// CHECK-EXT: @val3 = global i32 -1
-// CHECK-EXT: @val4 = global i32 2
-
-// CHECK-FAST: @val3 = global i32 -1
-// CHECK-FAST: @val4 = global i32 -1
-
-float res;
-int add(float a, float b, float c) {
-  // CHECK: fadd float
-  // CHECK: load float, ptr
-  // CHECK: fadd float
-  // CHECK: store float
-  // CHECK: ret i32 0
-  res = a + b + c;
-  return __FLT_EVAL_METHOD__;
-}
-
-int add_precise(float a, float b, float c) {
-#pragma float_control(precise, on)
-  // CHECK: fadd float
-  // CHECK: load float, ptr
-  // CHECK: fadd float
-  // CHECK: store float
-  // CHECK: ret i32 0
-  res = a + b + c;
-  return __FLT_EVAL_METHOD__;
-}
-
-#pragma float_control(push)
-#pragma float_control(precise, on)
-int add_precise_1(float a, float b, float c) {
-  // CHECK: fadd float
-  // CHECK: load float, ptr
-  // CHECK: fadd float
-  // CHECK: store float
-  // CHECK: ret i32 0
-  res = a + b + c;
-  return __FLT_EVAL_METHOD__;
-}
-#pragma float_control(pop)
-
-int add_not_precise(float a, float b, float c) {
-  // Fast-math is enabled with this pragma.
-#pragma float_control(precise, off)
-  // CHECK: fadd fast float
-  // CHECK: load float, ptr
-  // CHECK: fadd fast float
-  // CHECK: float {{.*}}, ptr
-  // CHECK: ret i32 -1
-  res = a + b + c;
-  return __FLT_EVAL_METHOD__;
-}
-
-#pragma float_control(push)
-// Fast-math is enabled with this pragma.
-#pragma float_control(precise, off)
-int add_not_precise_1(float a, float b, float c) {
-  // CHECK: fadd fast float
-  // CHECK: load float, ptr
-  // CHECK: fadd fast float
-  // CHECK: float {{.*}}, ptr
-  // CHECK: ret i32 -1
-  res = a + b + c;
-  return __FLT_EVAL_METHOD__;
-}
-#pragma float_control(pop)
-
-int getFPEvalMethod() {
-  // CHECK: ret i32 0
-  return __FLT_EVAL_METHOD__;
-}
-
-float res1;
-int whatever(float a, float b, float c) {
-#pragma float_control(precise, off)
-  // CHECK: load float, ptr
-  // CHECK: fadd fast float
-  // CHECK: store float {{.*}}, ptr
-  // CHECK: store i32 -1
-  // CHECK: store i32 0
-  // CHECK: ret i32 -1
-  res1 = a + b + c;
-  int val1 = __FLT_EVAL_METHOD__;
-  {
-#pragma float_control(precise, on)
-    int val2 = __FLT_EVAL_METHOD__;
-  }
-  return __FLT_EVAL_METHOD__;
-}