[SPARC] [SSP] Add support for LOAD_STACK_GUARD.
This fixes PR22248 on sparc.
Differential Revision: http://reviews.llvm.org/D19386
llvm-svn: 267545
diff --git a/llvm/test/CodeGen/SPARC/stack-protector.ll b/llvm/test/CodeGen/SPARC/stack-protector.ll
new file mode 100644
index 0000000..70a7366
--- /dev/null
+++ b/llvm/test/CodeGen/SPARC/stack-protector.ll
@@ -0,0 +1,33 @@
+; RUN: llc -mtriple=sparc-unknown-linux < %s | FileCheck %s --check-prefix=LINUX-32
+; RUN: llc -mtriple=sparc64-unknown-linux < %s | FileCheck %s --check-prefix=LINUX-64
+; RUN: llc -mtriple=sparc-unknown-solaris < %s | FileCheck %s --check-prefix=GENERIC
+; RUN: llc -mtriple=sparc64-unknown-solaris < %s | FileCheck %s --check-prefix=GENERIC
+
+; LINUX-32: ld [%g7+20], [[REG1:%[ilo][0-9]*]]
+; LINUX-64: ldx [%g7+40], [[REG1:%[ilo][0-9]*]]
+; LINUX-32-NOT: __stack_chk_guard
+; LINUX-64-NOT: __stack_chk_guard
+; GENERIC: __stack_chk_guard
+
+@"\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*, 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], [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