[llvm-bugs] [Bug 11001] Bug with zero shifts in DAGTypeLegalizer:: ExpandShiftWithUnknownAmountBit

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=11001

Simon Pilgrim <llvm-dev at redking.me.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
                 CC|                            |llvm-dev at redking.me.uk

--- Comment #3 from Simon Pilgrim <llvm-dev at redking.me.uk> ---
Resolving very old bug - we have both getShiftAmountTyForConstant and
getShiftAmountTy for a while to prevent premature shift type truncation:

EVT TargetLoweringBase::getShiftAmountTy(EVT LHSTy, const DataLayout &DL,
                                         bool LegalTypes) const {
  assert(LHSTy.isInteger() && "Shift amount is not an integer type!");
  if (LHSTy.isVector())
    return LHSTy;
  return LegalTypes ? getScalarShiftAmountTy(DL, LHSTy)
                    : getPointerTy(DL);
}

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