From 9a4ab9660f0bb52ca97e8edf841ed3b63acd99cf Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 20 Jan 2006 01:12:23 +0000
Subject: [PATCH] Added a load folding bug test case.

llvm-svn: 25472
---
 .../CodeGen/X86/2006-01-19-ISelFoldingBug.ll      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 llvm/test/Regression/CodeGen/X86/2006-01-19-ISelFoldingBug.ll

diff --git a/llvm/test/Regression/CodeGen/X86/2006-01-19-ISelFoldingBug.ll b/llvm/test/Regression/CodeGen/X86/2006-01-19-ISelFoldingBug.ll
new file mode 100644
index 000000000000..4dc9165434dd
--- /dev/null
+++ b/llvm/test/Regression/CodeGen/X86/2006-01-19-ISelFoldingBug.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep 'shld' | wc -l | grep 1
+;
+; Check that the isel does not fold the shld, which already folds a load
+; and has two uses, into a store.
+%A = external global uint
+
+uint %test5(uint %B, ubyte %C) {
+	%tmp.1 = load uint *%A;
+	%tmp.2 = shl uint %tmp.1, ubyte %C
+	%tmp.3 = sub ubyte 32, %C
+	%tmp.4 = shr uint %B, ubyte %tmp.3
+	%tmp.5 = or uint %tmp.4, %tmp.2
+	store uint %tmp.5, uint* %A
+	ret uint %tmp.5
+}