1 // llvm-gcc -O1+ should run simplify libcalls, O0 shouldn't
2 // and -fno-builtins shouldn't.
3 // RUN: %llvmgcc %s -S -emit-llvm -O0 -o - | grep {call.*exp2\\.f64}
4 // RUN: %llvmgcc %s -S -emit-llvm -O1 -o - | grep {call.*ldexp}
5 // RUN: %llvmgcc %s -S -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2}
9 double t4(unsigned char x) {