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
t4(unsigned char x)14 double t4(unsigned char x) {
15 return exp2(x);
16 }
17