1 files changed, 16 insertions, 0 deletions
diff --git a/clang/test/CodeGen/libcalls-d.c b/clang/test/CodeGen/libcalls-d.c
new file mode 100644
index 0000000..b375f2b
--- /dev/null
+++ b/clang/test/CodeGen/libcalls-d.c
@@ -0,0 +1,16 @@
+// 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: %clang_cc1 %s -emit-llvm -fno-math-errno -O0 -o - | grep {call.*exp2\\.f64}
+// RUN: %clang_cc1 %s -emit-llvm -fmath-errno -O0 -o - | grep {call.*exp2}
+// RUN: %clang_cc1 %s -emit-llvm -O1 -o - | grep {call.*ldexp}
+// RUN: %clang_cc1 %s -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2}
+
+// clang doesn't support this yet.
+// XFAIL: *
+
+double exp2(double);
+
+double t4(unsigned char x) {
+  return exp2(x);
+}