From: Chris Lattner <sabre@nondot.org>
Date: Sat, 7 May 2005 04:23:29 +0000 (+0000)
Subject: test that reassociate can handle shifts
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=5cc924ac42f6ded8c560dcdf706c86634f5b0db7;p=oota-llvm.git

test that reassociate can handle shifts


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21760 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/Reassociate/shifttest.ll b/test/Transforms/Reassociate/shifttest.ll
new file mode 100644
index 00000000000..6ca6622467f
--- /dev/null
+++ b/test/Transforms/Reassociate/shifttest.ll
@@ -0,0 +1,10 @@
+; With shl->mul reassociation, we can see that this is (shl A, 9) * A
+;
+; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis | grep 'shl .*, ubyte 9'
+
+int %test(int %A, int %B) {
+	%X = shl int %A, ubyte 5
+	%Y = shl int %A, ubyte 4
+	%Z = mul int %Y, %X
+	ret int %Z
+}