clang/test/CodeGen/denormalfpmode.c

   1 // RUN: %clang_cc1 -fdenormal-fp-math=ieee %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-IEEE
   2 // RUN: %clang_cc1 -fdenormal-fp-math=preserve-sign %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-PS
   3 // RUN: %clang_cc1 -fdenormal-fp-math=positive-zero %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-PZ
   4 // RUN: %clang_cc1 -fdenormal-fp-math=dynamic %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC
   5
   6 // CHECK-LABEL: main
   7
   8 // The ieee,ieee is the default, so omit the attribute
   9 // CHECK-IEEE-NOT:"denormal-fp-math"
  10 // CHECK-PS: attributes #0 = {{.*}}"denormal-fp-math"="preserve-sign,preserve-sign"{{.*}}
  11 // CHECK-PZ: attributes #0 = {{.*}}"denormal-fp-math"="positive-zero,positive-zero"{{.*}}
  12 // CHECK-DYNAMIC: attributes #0 = {{.*}}"denormal-fp-math"="dynamic,dynamic"{{.*}}
  13
  14 int main(void) {
  15   return 0;
  16 }