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\\..*f}
5// RUN: %clang_cc1 %s -emit-llvm -fmath-errno -o - | grep {call.*exp2l}
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.*exp2l}
8
9// clang doesn't support this yet.
10// XFAIL: *
11
12// If this fails for you because your target doesn't support long double,
13// please xfail the test.
14
15long double exp2l(long double);
16
17long double t4(unsigned char x) {
18  return exp2l(x);
19}
20