clang/test/CodeGen/2009-09-24-SqrtErrno.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -fmath-errno | FileCheck %s
   2 // llvm.sqrt has undefined behavior on negative inputs, so it is
   3 // inappropriate to translate C/C++ sqrt to this.
   4
   5 float sqrtf(float x);
   6 float foo(float X) {
   7 // CHECK: foo
   8 // CHECK-NOT: readonly
   9 // CHECK: call float @sqrtf
  10   // Check that this is not marked readonly when errno is used.
  11   return sqrtf(X);
  12 }