17 lines · c
1// llvm-gcc -O1+ should run simplify libcalls, O0 shouldn't2// 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 12double exp2(double);13 14double t4(unsigned char x) {15 return exp2(x);16}17