Lines Matching defs:MinBitWidth

209       // Worklist and the Stack, and update MinBitWidth.
214           Info.MinBitWidth =
215               std::max(Info.MinBitWidth, InstInfoMap[IOp].MinBitWidth);
225     Info.MinBitWidth = std::max(Info.MinBitWidth, Info.ValidBitWidth);
239   unsigned MinBitWidth = InstInfoMap.lookup(cast<Instruction>(Src)).MinBitWidth;
240   assert(MinBitWidth >= TruncBitWidth);
242   if (MinBitWidth > TruncBitWidth) {
248     // Use the smallest integer type in the range [MinBitWidth, OrigBitWidth).
249     Type *Ty = DL.getSmallestLegalIntType(DstTy->getContext(), MinBitWidth);
252     MinBitWidth = Ty ? Ty->getScalarSizeInBits() : OrigBitWidth;
253   } else { // MinBitWidth == TruncBitWidth
258     bool FromLegal = MinBitWidth == 1 || DL.isLegalInteger(OrigBitWidth);
259     bool ToLegal = MinBitWidth == 1 || DL.isLegalInteger(MinBitWidth);
263   return MinBitWidth;
299   // Initialize MinBitWidth for shift instructions with the minimum number
301   // For `lshr` adjust MinBitWidth so that all potentially truncated
303   // For `ashr` adjust MinBitWidth so that all potentially truncated
306   // Exit early if MinBitWidth is not less than original bitwidth.
311       unsigned MinBitWidth = KnownRHS.getMaxValue()
314       if (MinBitWidth == OrigBitWidth)
318         MinBitWidth =
319             std::max(MinBitWidth, KnownLHS.getMaxValue().getActiveBits());
323         MinBitWidth = std::max(MinBitWidth, OrigBitWidth - NumSignBits + 1);
325       if (MinBitWidth >= OrigBitWidth)
327       Itr.second.MinBitWidth = MinBitWidth;
331       unsigned MinBitWidth = 0;
334         MinBitWidth =
335             std::max(Known.getMaxValue().getActiveBits(), MinBitWidth);
336         if (MinBitWidth >= OrigBitWidth)
339       Itr.second.MinBitWidth = MinBitWidth;
345   unsigned MinBitWidth = getMinBitWidth();
349   if (MinBitWidth >= OrigBitWidth ||
350       (DesiredBitWidth && DesiredBitWidth != MinBitWidth))
353   return IntegerType::get(CurrentTruncInst->getContext(), MinBitWidth);