From a64388a25f7c056cb4e0419babf0b6253bbed926 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 14 May 2002 19:56:14 +0000
Subject: [PATCH] New testcase

llvm-svn: 2628
---
 .../Transforms/GCSE/2002-05-14-OperandSwap.ll  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 llvm/test/Regression/Transforms/GCSE/2002-05-14-OperandSwap.ll

diff --git a/llvm/test/Regression/Transforms/GCSE/2002-05-14-OperandSwap.ll b/llvm/test/Regression/Transforms/GCSE/2002-05-14-OperandSwap.ll
new file mode 100644
index 000000000000..a75e298f7fa4
--- /dev/null
+++ b/llvm/test/Regression/Transforms/GCSE/2002-05-14-OperandSwap.ll
@@ -0,0 +1,18 @@
+; This entire chain of computation should be optimized away, but
+; wasn't because the two multiplies were not detected as being identical.
+;
+; RUN: if as < %s  | opt -gcse -instcombine -dce | dis | grep sub
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+implementation   ; Functions:
+
+uint "vnum_test4"(uint* %data) {
+	%reg1101 = load uint* %data, uint 1
+	%reg1111 = load uint* %data, uint 3
+	%reg109 = mul uint %reg1101, %reg1111
+	%reg108 = mul uint %reg1111, %reg1101
+	%reg121 = sub uint %reg108, %reg109
+	ret uint %reg121
+}