From 33e24adc3bc3d046aa05cf903fb74da1610b57cb Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 21 Apr 2009 16:52:12 +0000
Subject: fix a crash on a pointless but valid zero-length memset,
 rdar://6808691

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69680 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../Transforms/ScalarRepl/2009-04-21-ZeroLengthMemSet.ll | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 test/Transforms/ScalarRepl/2009-04-21-ZeroLengthMemSet.ll

(limited to 'test/Transforms/ScalarRepl')

diff --git a/test/Transforms/ScalarRepl/2009-04-21-ZeroLengthMemSet.ll b/test/Transforms/ScalarRepl/2009-04-21-ZeroLengthMemSet.ll
new file mode 100644
index 0000000000..2342f05aac
--- /dev/null
+++ b/test/Transforms/ScalarRepl/2009-04-21-ZeroLengthMemSet.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis
+; rdar://6808691
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "x86_64-apple-darwin9.0"
+	type <{ i32, i16, i8, i8, i64, i64, i16, [0 x i16] }>		
+
+define i32 @foo() {
+entry:
+	%.compoundliteral = alloca %0		
+	%tmp228 = getelementptr %0* %.compoundliteral, i32 0, i32 7
+	%tmp229 = bitcast [0 x i16]* %tmp228 to i8*		
+	call void @llvm.memset.i64(i8* %tmp229, i8 0, i64 0, i32 2)
+	unreachable
+}
+
+declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind
-- 
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