1 files changed, 17 insertions, 0 deletions
diff --git a/test/FrontendC/libcalls-ld.c b/test/FrontendC/libcalls-ld.c
new file mode 100644
index 0000000..6533eb8
--- /dev/null
+++ b/test/FrontendC/libcalls-ld.c
@@ -0,0 +1,17 @@
+// 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\\..*f}
+// RUN: %llvmgcc %s -S -fmath-errno -emit-llvm -O0 -o - | grep {call.*exp2l}
+// RUN: %llvmgcc %s -S -emit-llvm -O1 -o - | grep {call.*ldexp}
+// RUN: %llvmgcc %s -S -emit-llvm -O3 -fno-builtin -o - | grep {call.*exp2l}
+
+// If this fails for you because your target doesn't support long double,
+// please xfail the test.
+
+long double exp2l(long double);
+
+long double t4(unsigned char x) {
+  return exp2l(x);
+}
+