commit 6acaaa8f32a52772952c2171ad8ee1f7a896a1c9
author Dan Gohman <gohman@apple.com> Fri Sep 25 00:57:30 2009 +0000
committer Dan Gohman <gohman@apple.com> Fri Sep 25 00:57:30 2009 +0000
tree 07778c8bdbd299408a06072492c0b94f1aefc270
parent 8fc13cb4f7a2997f993ffdfe6e488046ec6c834e

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

lib/Target/PowerPC/PPCISelLowering.cpp

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 88e2b07..3b05679 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -4921,7 +4921,8 @@
     }
 
     // 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)) {