Fix PR3453 and probably a bunch of other potential

crashes or wrong code with codegen of large integers:
eliminate the legacy getIntegerVTBitMask and
getIntegerVTSignBit methods, which returned their
value as a uint64_t, so couldn't handle huge types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63494 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeGenDAGPatterns.cpp

@@ -842,7 +842,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
               // If sign-extended doesn't fit, does it fit as unsigned?
               unsigned ValueMask;
               unsigned UnsignedVal;
-              ValueMask = unsigned(MVT(VT).getIntegerVTBitMask());
+              ValueMask = unsigned(~uint32_t(0UL) >> (32-Size));
               UnsignedVal = unsigned(II->getValue());
 
               if ((ValueMask & UnsignedVal) != UnsignedVal) {