From: Dan Gohman <gohman@apple.com>
Date: Fri, 25 Sep 2009 00:57:30 +0000 (+0000)
Subject: Don't try to use pre-indexed addressing with sthbrx/stwbrx
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=6acaaa8f32a52772952c2171ad8ee1f7a896a1c9;p=oota-llvm.git

Don't try to use pre-indexed addressing with sthbrx/stwbrx
instructions. This fixes a PowerPC bug exposed by some unrelated
changes I'm working on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82743 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 88e2b0724fc..3b05679364d 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -4921,7 +4921,8 @@ SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N,
     }
 
     // Turn STORE (BSWAP) -> sthbrx/stwbrx.
-    if (N->getOperand(1).getOpcode() == ISD::BSWAP &&
+    if (cast<StoreSDNode>(N)->isUnindexed() &&
+        N->getOperand(1).getOpcode() == ISD::BSWAP &&
         N->getOperand(1).getNode()->hasOneUse() &&
         (N->getOperand(1).getValueType() == MVT::i32 ||
          N->getOperand(1).getValueType() == MVT::i16)) {