[llvm] r299618 - foo
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 5 21:02:28 PDT 2017
Author: ctopper
Date: Wed Apr 5 23:02:28 2017
New Revision: 299618
URL: http://llvm.org/viewvc/llvm-project?rev=299618&view=rev
Log:
foo
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=299618&r1=299617&r2=299618&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Wed Apr 5 23:02:28 2017
@@ -791,6 +791,9 @@ bool TargetLowering::SimplifyDemandedBit
// TODO: Should we check for other forms of sign-bit comparisons?
// Examples: X <= -1, X >= 0
}
+ if (getBooleanContents(Op.getOperand(0).getValueType()) ==
+ BooleanContent::ZeroOrOneBooleanContent && BitWidth > 1)
+ KnownZero.setBitsFrom(1);
break;
}
case ISD::SHL:
More information about the llvm-commits
mailing list