From 600c04369775b014073ec295545ff9dd2a7f2fed Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Mon, 16 Nov 2009 21:56:03 +0000
Subject: - Check memoperand alignment instead of checking stack alignment.
 Most load / store folding instructions are not referencing spill stack slots.
 - Mark MOVUPSrm re-materializable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88974 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll | 28 +++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll

(limited to 'test')

diff --git a/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll b/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll
new file mode 100644
index 0000000..3ce9edb
--- /dev/null
+++ b/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll
@@ -0,0 +1,28 @@
+; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
+; rdar://7396984
+
+@str = private constant [28 x i8] c"xxxxxxxxxxxxxxxxxxxxxxxxxxx\00", align 1
+
+define void @t(i32 %count) ssp nounwind {
+entry:
+; CHECK: t:
+; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip)
+; CHECK: movups L_str(%rip), %xmm0
+  %tmp0 = alloca [60 x i8], align 1
+  %tmp1 = getelementptr inbounds [60 x i8]* %tmp0, i64 0, i64 0
+  br label %bb1
+
+bb1:
+; CHECK: LBB1_1:
+; CHECK: movaps %xmm0, (%rsp)
+  %tmp2 = phi i32 [ %tmp3, %bb1 ], [ 0, %entry ]
+  call void @llvm.memcpy.i64(i8* %tmp1, i8* getelementptr inbounds ([28 x i8]* @str, i64 0, i64 0), i64 28, i32 1)
+  %tmp3 = add i32 %tmp2, 1
+  %tmp4 = icmp eq i32 %tmp3, %count
+  br i1 %tmp4, label %bb2, label %bb1
+
+bb2:
+  ret void
+}
+
+declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
-- 
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