From: Reid Spencer <rspencer@reidspencer.com>
Date: Mon, 26 Mar 2007 23:48:52 +0000 (+0000)
Subject: Another test case for PR1271 where bad shift masks were generated.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=fecaf1a2b61e7119cb58672d21718a11a85171f7;p=oota-llvm.git

Another test case for PR1271 where bad shift masks were generated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35372 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/InstCombine/2007-03-26-BadShiftMask.ll b/test/Transforms/InstCombine/2007-03-26-BadShiftMask.ll
new file mode 100644
index 00000000000..c63fe8dedb7
--- /dev/null
+++ b/test/Transforms/InstCombine/2007-03-26-BadShiftMask.ll
@@ -0,0 +1,35 @@
+; PR1271
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
+; RUN:    grep 'ashr i32 %.mp137, 2'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
+target triple = "i686-pc-linux-gnu"
+
+implementation   ; Functions:
+
+define i1 @test(i32* %tmp141, i32* %tmp145, 
+            i32 %b8, i32 %iftmp.430.0, i32* %tmp134.out, i32* %tmp137.out)
+{
+newFuncRoot:
+	%tmp133 = and i32 %b8, 1		; <i32> [#uses=1]
+	%tmp134 = shl i32 %tmp133, 3		; <i32> [#uses=3]
+	%tmp136 = ashr i32 %b8, 1		; <i32> [#uses=1]
+	%tmp137 = shl i32 %tmp136, 3		; <i32> [#uses=3]
+	%tmp139 = ashr i32 %tmp134, 2		; <i32> [#uses=1]
+	store i32 %tmp139, i32* %tmp141
+	%tmp143 = ashr i32 %tmp137, 2		; <i32> [#uses=1]
+	store i32 %tmp143, i32* %tmp145
+	icmp eq i32 %iftmp.430.0, 0		; <i1>:0 [#uses=1]
+	zext i1 %0 to i8		; <i8>:1 [#uses=1]
+	icmp ne i8 %1, 0		; <i1>:2 [#uses=1]
+	br i1 %2, label %cond_true147.exitStub, label %cond_false252.exitStub
+
+cond_true147.exitStub:		; preds = %newFuncRoot
+	store i32 %tmp134, i32* %tmp134.out
+	store i32 %tmp137, i32* %tmp137.out
+	ret i1 true
+
+cond_false252.exitStub:		; preds = %newFuncRoot
+	store i32 %tmp134, i32* %tmp134.out
+	store i32 %tmp137, i32* %tmp137.out
+	ret i1 false
+}