A simple test for stack protectors. This should be valid on all platforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59505 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Generic/stack-protector.ll b/test/CodeGen/Generic/stack-protector.ll
new file mode 100644 (file)
index 0000000..a11a714
--- /dev/null
+++ b/test/CodeGen/Generic/stack-protector.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s | llc -o - | grep {__stack_chk_guard}
+; RUN: llvm-as < %s | llc -o - | grep {__stack_chk_fail}
+
+@"\01LC" = internal constant [11 x i8] c"buf == %s\0A\00"              ; <[11 x i8]*> [#uses=1]
+
+define void @test(i8* %a) nounwind ssp {
+entry:
+       %a_addr = alloca i8*            ; <i8**> [#uses=2]
+       %buf = alloca [8 x i8]          ; <[8 x i8]*> [#uses=2]
+       %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+       store i8* %a, i8** %a_addr
+       %buf1 = bitcast [8 x i8]* %buf to i8*           ; <i8*> [#uses=1]
+       %0 = load i8** %a_addr, align 4         ; <i8*> [#uses=1]
+       %1 = call i8* @strcpy(i8* %buf1, i8* %0) nounwind               ; <i8*> [#uses=0]
+       %buf2 = bitcast [8 x i8]* %buf to i8*           ; <i8*> [#uses=1]
+       %2 = call i32 (i8*, ...)* @printf(i8* getelementptr ([11 x i8]* @"\01LC", i32 0, i32 0), i8* %buf2) nounwind            ; <i32> [#uses=0]
+       br label %return
+
+return:                ; preds = %entry
+       ret void
+}
+
+declare i8* @strcpy(i8*, i8*) nounwind
+
+declare i32 @printf(i8*, ...) nounwind