1 files changed, 14 insertions, 0 deletions
diff --git a/test/FrontendC/libcalls-d.c b/test/FrontendC/libcalls-d.c
new file mode 100644
index 0000000..126866a
--- /dev/null
+++ b/test/FrontendC/libcalls-d.c
@@ -0,0 +1,14 @@
+// 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 -emit-llvm -O0 -o - | grep {call.*exp2\\.f64}
+// RUN: %llvmgcc %s -S -fmath-errno -emit-llvm -O0 -o - | grep {call.*exp2}
+// RUN: %llvmgcc %s -S -emit-llvm -O1 -o - | grep {call.*ldexp}
+// RUN: %llvmgcc %s -S -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2}
+
+double exp2(double);
+
+double t4(unsigned char x) {
+  return exp2(x);
+}
+