test/FrontendC/libcalls-ld.c

   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: %llvmgcc %s -S -fno-math-errno -emit-llvm -O0 -o - | grep {call.*exp2\\..*f}
   5 // RUN: %llvmgcc %s -S -fmath-errno -emit-llvm -O0 -o - | grep {call.*exp2l}
   6 // RUN: %llvmgcc %s -S -emit-llvm -O1 -o - | grep {call.*ldexp}
   7 // RUN: %llvmgcc %s -S -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2l}
   8
   9 // If this fails for you because your target doesn't support long double,
  10 // please xfail the test.
  11
  12 long double exp2l(long double);
  13
  14 long double t4(unsigned char x) {
  15   return exp2l(x);
  16 }
  17