Add the clang library to the repo (with some of my changes, too).

1 files changed, 113 insertions, 0 deletions

diff --git a/clang/test/CodeGen/function-attributes.c b/clang/test/CodeGen/function-attributes.c
new file mode 100644
index 0000000..6cbf40b
--- /dev/null
+++ b/clang/test/CodeGen/function-attributes.c
@@ -0,0 +1,113 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -Os -o - %s | FileCheck %s
+// CHECK: define signext i8 @f0(i32 %x) nounwind
+// CHECK: define zeroext i8 @f1(i32 %x) nounwind
+// CHECK: define void @f2(i8 signext %x) nounwind
+// CHECK: define void @f3(i8 zeroext %x) nounwind
+// CHECK: define signext i16 @f4(i32 %x) nounwind
+// CHECK: define zeroext i16 @f5(i32 %x) nounwind
+// CHECK: define void @f6(i16 signext %x) nounwind
+// CHECK: define void @f7(i16 zeroext %x) nounwind
+
+signed char f0(int x) { return x; }
+
+unsigned char f1(int x) { return x; }
+
+void f2(signed char x) { }
+
+void f3(unsigned char x) { }
+
+signed short f4(int x) { return x; }
+
+unsigned short f5(int x) { return x; }
+
+void f6(signed short x) { }
+
+void f7(unsigned short x) { }
+
+// CHECK: define void @f8()
+// CHECK: nounwind
+// CHECK: alwaysinline
+// CHECK: {
+void __attribute__((always_inline)) f8(void) { }
+
+// CHECK: call void @f9_t()
+// CHECK: noreturn
+// CHECK: {
+void __attribute__((noreturn)) f9_t(void);
+void f9(void) { f9_t(); }
+
+// FIXME: We should be setting nounwind on calls.
+// CHECK: call i32 @f10_t()
+// CHECK: readnone
+// CHECK: {
+int __attribute__((const)) f10_t(void);
+int f10(void) { return f10_t(); }
+int f11(void) {
+ exit:
+  return f10_t();
+}
+int f12(int arg) {
+  return arg ? 0 : f10_t();
+}
+
+// CHECK: define void @f13() nounwind readnone
+void f13(void) __attribute__((pure)) __attribute__((const));
+void f13(void){}
+
+
+// Ensure that these get inlined: rdar://6853279
+// CHECK: define void @f14
+// CHECK-NOT: @ai_
+// CHECK: call void @f14_end
+static __inline__ __attribute__((always_inline))
+int ai_1() {  return 4; }
+
+static __inline__ __attribute__((always_inline))
+struct {
+  int a, b, c, d, e;
+} ai_2() { while (1) {} }
+
+void f14(int a) {
+  extern void f14_end(void);
+  if (a)
+    ai_2();
+  ai_1();
+  f14_end();
+}
+
+// <rdar://problem/7102668> [irgen] clang isn't setting the optsize bit on functions
+// CHECK: define void @f15
+// CHECK: optsize
+// CHECK: {
+void f15(void) {
+}
+
+// PR5254
+// CHECK: define void @f16
+// CHECK: alignstack(16)
+// CHECK: {
+void __attribute__((force_align_arg_pointer)) f16(void) {
+}
+
+// PR11038
+// CHECK: define void @f18()
+// CHECK: returns_twice
+// CHECK: {
+// CHECK: call void @f17()
+// CHECK: returns_twice
+// CHECK: ret void
+__attribute__ ((returns_twice)) void f17(void);
+__attribute__ ((returns_twice)) void f18(void) {
+        f17();
+}
+
+// CHECK: define void @f19()
+// CHECK: {
+// CHECK: call i32 @setjmp(i32* null)
+// CHECK: returns_twice
+// CHECK: ret void
+typedef int jmp_buf[((9 * 2) + 3 + 16)];
+int setjmp(jmp_buf);
+void f19(void) {
+  setjmp(0);
+}