clang/test/CodeGen/libcalls-d.c

   1 // llvm-gcc -O1+ should run simplify libcalls, O0 shouldn't
   2 // and -fno-builtins shouldn't.
   3 // -fno-math-errno should emit an llvm intrinsic, -fmath-errno should not.
   4 // RUN: %clang_cc1 %s -emit-llvm -fno-math-errno -o - | grep {call.*exp2\\.f64}
   5 // RUN: %clang_cc1 %s -emit-llvm -fmath-errno -o - | grep {call.*exp2}
   6 // RUN: %clang_cc1 %s -emit-llvm -O1 -o - | grep {call.*ldexp}
   7 // RUN: %clang_cc1 %s -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2}
   8
   9 // clang doesn't support this yet.
  10 // XFAIL: *
  11
  12 double exp2(double);
  13
  14 double t4(unsigned char x) {
  15   return exp2(x);
  16 }