From 7b25467d062b46bd026c394e2bbc1124b4d12530 Mon Sep 17 00:00:00 2001 From: Nate Begeman Date: Wed, 11 Feb 2009 22:36:25 +0000 Subject: [PATCH] the two non-mask arguments to a shufflevector must be the same width, but they do not have to be the same width as the result value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64335 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/InstructionCombining.cpp | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index b4262743a3c..7117bda7067 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -1538,11 +1538,12 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, } } + APInt UndefElts4(LHSVWidth, 0); TmpV = SimplifyDemandedVectorElts(I->getOperand(0), LeftDemanded, - UndefElts2, Depth+1); + UndefElts4, Depth+1); if (TmpV) { I->setOperand(0, TmpV); MadeChange = true; } - APInt UndefElts3(VWidth, 0); + APInt UndefElts3(LHSVWidth, 0); TmpV = SimplifyDemandedVectorElts(I->getOperand(1), RightDemanded, UndefElts3, Depth+1); if (TmpV) { I->setOperand(1, TmpV); MadeChange = true; } @@ -1553,7 +1554,7 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (MaskVal == -1u) { UndefElts.set(i); } else if (MaskVal < LHSVWidth) { - if (UndefElts2[MaskVal]) { + if (UndefElts4[MaskVal]) { NewUndefElts = true; UndefElts.set(i); } -- 2.34.1