Cross Reference: /external/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

Lines Matching refs:LHS
327 /// elements from either LHS or RHS, return the shuffle mask and true.
329 static bool CollectSingleShuffleElements(Value *V, Value *LHS, Value *RHS,
331   assert(LHS->getType() == RHS->getType() &&
340   if (V == LHS) {
366       if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
375         unsigned NumLHSElts = LHS->getType()->getVectorNumElements();
377         // This must be extracting from either LHS or RHS.
378         if (EI->getOperand(0) == LHS || EI->getOperand(0) == RHS) {
381           if (CollectSingleShuffleElements(VecOp, LHS, RHS, Mask)) {
383             if (EI->getOperand(0) == LHS) {
568           // We now have a shuffle of LHS, RHS, Mask.
848     // Is this an identity shuffle of the LHS value?
857   Value *LHS = SVI.getOperand(0);
874     LHS = SVI.getOperand(0);
879   unsigned LHSWidth = cast<VectorType>(LHS->getType())->getNumElements();
883   if (LHS == RHS || isa<UndefValue>(LHS)) {
884     if (isa<UndefValue>(LHS) && LHS == RHS) {
887                       ? LHS : UndefValue::get(SVI.getType());
891     // Remap any references to RHS to use LHS.
900           (Mask[i] <  (int)e && isa<UndefValue>(LHS))) {
904         Mask[i] = Mask[i] % e;  // Force to LHS.
912     LHS = SVI.getOperand(0);
918     // Analyze the shuffle, are the LHS or RHS and identity shuffles?
923     if (isLHSID) return ReplaceInstUsesWith(SVI, LHS);
927   if (isa<UndefValue>(RHS) && CanEvaluateShuffled(LHS, Mask)) {
928     Value *V = EvaluateInDifferentElementOrder(LHS, Mask);
932   // If the LHS is a shufflevector itself, see if we can combine it with this
975   ShuffleVectorInst* LHSShuffle = dyn_cast<ShuffleVectorInst>(LHS);
1000   Value* newLHS = LHS;
1023   if (newLHS == LHS && newRHS == RHS)
1028   if (newLHS != LHS)
1033   unsigned newLHSWidth = (newLHS != LHS) ? LHSOp0Width : LHSWidth;
1047       // If LHS is going to be replaced (case 1, 2, or 4), calculate the
1049       if (newLHS != LHS) {
1078       // If LHS's width is changed, shift the mask value accordingly.