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// llvm-gcc -O1+ should run simplify libcalls, O0 shouldn't
// and -fno-builtins shouldn't.
// -fno-math-errno should emit an llvm intrinsic, -fmath-errno should not.
// RUN: %llvmgcc %s -S -fno-math-errno -O0 -o - | grep {call.*exp2\\.f32}
// RUN: %llvmgcc %s -S -fmath-errno -O0 -o - | grep {call.*exp2f}
// RUN: %llvmgcc %s -S -O1 -o - | grep {call.*ldexp}
// RUN: %llvmgcc %s -S -O3 -fno-builtin -o - | grep {call.*exp2f}
float exp2f(float);
float t4(unsigned char x) {
return exp2f(x);
}
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