From: Chris Lattner <sabre@nondot.org>
Date: Mon, 3 Jan 2011 03:33:47 +0000 (+0000)
Subject: add a testcase for readonly call CSE
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=03d49e955ed81d5adc6bc9d557c9e302584aa152;p=oota-llvm.git

add a testcase for readonly call CSE


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122730 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/EarlyCSE/basic.ll b/test/Transforms/EarlyCSE/basic.ll
index a761ef764c6..6d772599b36 100644
--- a/test/Transforms/EarlyCSE/basic.ll
+++ b/test/Transforms/EarlyCSE/basic.ll
@@ -75,3 +75,15 @@ F:
   ; CHECK: F:
   ; CHECK: ret i32 %Diff
 }
+
+declare i32 @func(i32 *%P) readonly
+
+;; Simple call CSE'ing.
+; CHECK: @test5
+define i32 @test5(i32 *%P) {
+  %V1 = call i32 @func(i32* %P)
+  %V2 = call i32 @func(i32* %P)
+  %Diff = sub i32 %V1, %V2
+  ret i32 %Diff
+  ; CHECK: ret i32 0
+}