clang/test/CodeGen/fpconstrained.c

   1 // RUN: %clang_cc1 -frounding-math -ffp-exception-behavior=strict -fexperimental-strict-floating-point -emit-llvm -o - %s | FileCheck %s -check-prefix=FPMODELSTRICT
   2 // RUN: %clang_cc1 -ffp-contract=fast -emit-llvm -o - %s | FileCheck %s -check-prefix=PRECISE
   3 // RUN: %clang_cc1 -ffast-math -ffp-contract=fast -emit-llvm -o - %s | FileCheck %s -check-prefix=FAST
   4 // RUN: %clang_cc1 -ffast-math -emit-llvm -o - %s | FileCheck %s -check-prefix=FASTNOCONTRACT
   5 // RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=ignore -emit-llvm -o - %s | FileCheck %s -check-prefix=FAST
   6 // RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=strict -fexperimental-strict-floating-point -emit-llvm -o - %s | FileCheck %s -check-prefix=EXCEPT
   7 // RUN: %clang_cc1 -ffast-math -ffp-contract=fast -ffp-exception-behavior=maytrap -fexperimental-strict-floating-point -emit-llvm -o - %s | FileCheck %s -check-prefix=MAYTRAP
   8
   9 float f0, f1, f2;
  10
  11 void foo(void) {
  12   // CHECK-LABEL: define {{.*}}void @foo()
  13
  14   // MAYTRAP: llvm.experimental.constrained.fadd.f32(float %{{.*}}, float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.maytrap")
  15   // EXCEPT: llvm.experimental.constrained.fadd.f32(float %{{.*}}, float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
  16   // FPMODELSTRICT: llvm.experimental.constrained.fadd.f32(float %{{.*}}, float %{{.*}}, metadata !"round.dynamic", metadata !"fpexcept.strict")
  17   // STRICTEXCEPT: llvm.experimental.constrained.fadd.f32(float %{{.*}}, float %{{.*}}, metadata !"round.dynamic", metadata !"fpexcept.strict")
  18   // STRICTNOEXCEPT: llvm.experimental.constrained.fadd.f32(float %{{.*}}, float %{{.*}}, metadata !"round.dynamic", metadata !"fpexcept.ignore")
  19   // PRECISE: fadd contract float %{{.*}}, %{{.*}}
  20   // FAST: fadd fast
  21   // FASTNOCONTRACT: fadd reassoc nnan ninf nsz arcp afn float
  22   f0 = f1 + f2;
  23
  24   // CHECK: ret
  25 }