1 files changed, 58 insertions, 0 deletions
diff --git a/clang/test/CodeGen/builtin-attributes.c b/clang/test/CodeGen/builtin-attributes.c
new file mode 100644
index 0000000..3781eba
--- /dev/null
+++ b/clang/test/CodeGen/builtin-attributes.c
@@ -0,0 +1,58 @@
+// RUN: %clang_cc1 -triple arm-unknown-linux-gnueabi -emit-llvm -o - %s | FileCheck %s
+
+// CHECK: declare i32 @printf(i8*, ...)
+void f0() {
+  printf("a\n");
+}
+
+// CHECK: call void @exit
+// CHECK: unreachable
+void f1() {
+  exit(1);
+}
+
+// CHECK: call i8* @strstr{{.*}} nounwind
+char* f2(char* a, char* b) {
+  return __builtin_strstr(a, b);
+}
+
+// frexp is NOT readnone. It writes to its pointer argument.
+// <rdar://problem/10070234>
+//
+// CHECK: f3
+// CHECK: call double @frexp(double %
+// CHECK-NOT: readnone
+// CHECK: call float @frexpf(float %
+// CHECK-NOT: readnone
+// CHECK: call double @frexpl(double %
+// CHECK-NOT: readnone
+//
+// Same thing for modf and friends.
+//
+// CHECK: call double @modf(double %
+// CHECK-NOT: readnone
+// CHECK: call float @modff(float %
+// CHECK-NOT: readnone
+// CHECK: call double @modfl(double %
+// CHECK-NOT: readnone
+//
+// CHECK: call double @remquo(double %
+// CHECK-NOT: readnone
+// CHECK: call float @remquof(float %
+// CHECK-NOT: readnone
+// CHECK: call double @remquol(double %
+// CHECK-NOT: readnone
+// CHECK: ret
+int f3(double x) {
+  int e;
+  __builtin_frexp(x, &e);
+  __builtin_frexpf(x, &e);
+  __builtin_frexpl(x, &e);
+  __builtin_modf(x, &e);
+  __builtin_modff(x, &e);
+  __builtin_modfl(x, &e);
+  __builtin_remquo(x, x, &e);
+  __builtin_remquof(x, x, &e);
+  __builtin_remquol(x, x, &e);
+  return e;
+}