From: Craig Topper <craig.topper@gmail.com>
Date: Tue, 22 May 2012 06:09:38 +0000 (+0000)
Subject: Fix constant used for pshufb mask when lowering v16i8 shuffles. Bug introduced in... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=85b9e56bac85b30ede70e46ef9f60e4dec3b88f3;p=oota-llvm.git

Fix constant used for pshufb mask when lowering v16i8 shuffles. Bug introduced in r157043. Fixes PR12908.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157236 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 4e4cf276036..50a2d784dc6 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -5805,7 +5805,7 @@ SDValue LowerVECTOR_SHUFFLEv16i8(ShuffleVectorSDNode *SVOp,
     for (unsigned i = 0; i != 16; ++i) {
       int EltIdx = MaskVals[i];
       EltIdx = (EltIdx < 16) ? 0x80 : EltIdx - 16;
-      pshufbMask.push_back(DAG.getConstant(EltIdx - 16, MVT::i8));
+      pshufbMask.push_back(DAG.getConstant(EltIdx, MVT::i8));
     }
     V2 = DAG.getNode(X86ISD::PSHUFB, dl, MVT::v16i8, V2,
                      DAG.getNode(ISD::BUILD_VECTOR, dl,