From e74ed0d53b5c12eb9cb463698df8e81c8a99549d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 30 Nov 2004 06:36:11 +0000
Subject: [PATCH] Fix test/Regression/CodeGen/PowerPC/2004-11-29-ShrCrash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18374 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPC32ISelSimple.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Target/PowerPC/PPC32ISelSimple.cpp b/lib/Target/PowerPC/PPC32ISelSimple.cpp
index 33512c1e393..7b9a312a114 100644
--- a/lib/Target/PowerPC/PPC32ISelSimple.cpp
+++ b/lib/Target/PowerPC/PPC32ISelSimple.cpp
@@ -2910,7 +2910,9 @@ void PPC32ISel::emitShiftOperation(MachineBasicBlock *MBB,
       return;
     
     unsigned SrcReg = getReg (Op, MBB, IP);
-    if (isLeftShift) {
+    if (Amount == 0) {
+      BuildMI(*MBB, IP, PPC::OR, 2, DestReg).addReg(SrcReg).addReg(SrcReg);
+    } else if (isLeftShift) {
       BuildMI(*MBB, IP, PPC::RLWINM, 4, DestReg).addReg(SrcReg)
         .addImm(Amount).addImm(0).addImm(31-Amount);
     } else {