From 977a76fbb6ea1b87dfd7fbbe2ae2afb63e982ff3 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Wed, 13 Feb 2008 22:28:48 +0000 Subject: Simplify some logic in ComputeMaskedBits. And change ComputeMaskedBits to pass the mask APInt by value, not by reference. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47096 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/TargetLowering.cpp | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp') diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index c84b6972aa..f74ea5c29b 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1008,7 +1008,7 @@ bool TargetLowering::SimplifyDemandedBits(SDOperand Op, uint64_t DemandedMask, /// in Mask are known to be either zero or one and return them in the /// KnownZero/KnownOne bitsets. void TargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op, - APInt Mask, + const APInt &Mask, APInt &KnownZero, APInt &KnownOne, const SelectionDAG &DAG, @@ -1019,8 +1019,7 @@ void TargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op, Op.getOpcode() == ISD::INTRINSIC_VOID) && "Should use MaskedValueIsZero if you don't know whether Op" " is a target node!"); - KnownZero = 0; - KnownOne = 0; + KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0); } /// ComputeNumSignBitsForTargetNode - This method can be implemented by -- cgit v1.2.3-70-g09d2