__builtin_object_size refinements. WIP.

llvm-svn: 85136

1 files changed, 33 insertions, 0 deletions

diff --git a/clang/test/CodeGen/object-size.c b/clang/test/CodeGen/object-size.c
new file mode 100644
index 00000000000..b6861169893
--- /dev/null
+++ b/clang/test/CodeGen/object-size.c
@@ -0,0 +1,33 @@
+// RUN: clang-cc -triple x86_64-apple-darwin -S -D_FORTIFY_SOURCE=2 %s -o %t.s &&
+// RUN: FileCheck --input-file=%t.s %s
+#include <string.h>
+
+char gbuf[63];
+char *gp;
+
+void test1() {
+  // CHECK:       movabsq $59, %rdx
+  // CHECK-NEXT:  movq    %rax, %rdi
+  // CHECK-NEXT:  movq    %rcx, %rsi
+  // CHECK-NEXT:  call    ___strcpy_chk
+  strcpy(&gbuf[4], "Hi there");
+}
+
+void test2() {
+  // CHECK:       movabsq $63, %rdx
+  // CHECK-NEXT:  movq    %rax, %rdi
+  // CHECK-NEXT:  movq    %rcx, %rsi
+  // CHECK-NEXT:  call    ___strcpy_chk
+  strcpy(gbuf, "Hi there");
+}
+
+void test4() {
+  // CHECK:       call    ___inline_strcpy_chk
+  strcpy(gp, "Hi");
+}
+
+void test3() {
+  int i;
+  // CHECK:       call    ___inline_strcpy_chk
+  strcpy((++i, gbuf), "Hi");
+}