From 41429e3f1e4d72ee4f7d4df786b5b0c87405f5b0 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 17 Feb 2011 02:23:02 +0000
Subject: preserve NUW/NSW when transforming add x,x

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125711 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/InstCombine/add2.ll | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test/Transforms/InstCombine/add2.ll')

diff --git a/test/Transforms/InstCombine/add2.ll b/test/Transforms/InstCombine/add2.ll
index a382142d73..c5109c5288 100644
--- a/test/Transforms/InstCombine/add2.ll
+++ b/test/Transforms/InstCombine/add2.ll
@@ -33,3 +33,11 @@ define i32 @test3(i32 %A) {
 ; CHECK-NEXT: ret i32
 }
 
+define i32 @test4(i32 %A) {
+  %B = add nuw i32 %A, %A
+  ret i32 %B
+; CHECK: @test4
+; CHECK-NEXT: %B = shl nuw i32 %A, 1
+; CHECK-NEXT: ret i32 %B
+}
+
-- 
cgit v1.2.3