> > Fix PR1499: http://llvm.org/PR1499 .
Very nice, thanks again Lauro! -Chris > > --- > Diffs of the changes: (+4 -0) > > InstructionCombining.cpp | 4 ++++ > 1 files changed, 4 insertions(+) > > > Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp > diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.768 > llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.769 > --- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.768 Tue > May 22 20:17:04 2007 > +++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Wed Jun 6 > 12:08:48 2007 > @@ -1346,6 +1346,10 @@ > > // Signed shift right. > APInt DemandedMaskIn(DemandedMask.shl(ShiftAmt)); > + // If any of the "high bits" are demanded, we should set the > sign bit as > + // demanded. > + if (DemandedMask.countLeadingZeros() <= ShiftAmt) > + DemandedMaskIn.set(BitWidth-1); > if (SimplifyDemandedBits(I->getOperand(0), > DemandedMaskIn, > RHSKnownZero, RHSKnownOne, Depth+1)) > > > > _______________________________________________ > llvm-commits mailing list > llvm-commits@cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
