diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp index 0738883be15..2fb569d54fa 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp @@ -1261,8 +1261,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, // pass them through like other scalar intrinsics. So we shouldn't just // use Arg0 if DemandedElts[0] is clear like we do for other intrinsics. // Instead we should return a zero vector. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return ConstantAggregateZero::get(II->getType()); + } // Only the lower element is used. DemandedElts = 1; @@ -1284,8 +1286,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (TmpV) { II->setArgOperand(0, TmpV); MadeChange = true; } // If lowest element of a scalar op isn't used then use Arg0. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return II->getArgOperand(0); + } // TODO: If only low elt lower SQRT to FSQRT (with rounding/exceptions // checks). break; @@ -1304,8 +1308,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (TmpV) { II->setArgOperand(0, TmpV); MadeChange = true; } // If lowest element of a scalar op isn't used then use Arg0. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return II->getArgOperand(0); + } // Only lower element is used for operand 1. DemandedElts = 1; @@ -1333,8 +1339,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (TmpV) { II->setArgOperand(0, TmpV); MadeChange = true; } // If lowest element of a scalar op isn't used then use Arg0. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return II->getArgOperand(0); + } // Only lower element is used for operand 1. DemandedElts = 1; @@ -1381,8 +1389,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (TmpV) { II->setArgOperand(0, TmpV); MadeChange = true; } // If lowest element of a scalar op isn't used then use Arg0. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return II->getArgOperand(0); + } // Only lower element is used for operand 1 and 2. DemandedElts = 1; @@ -1412,8 +1422,10 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts, if (TmpV) { II->setArgOperand(2, TmpV); MadeChange = true; } // If lowest element of a scalar op isn't used then use Arg2. - if (!DemandedElts[0]) + if (!DemandedElts[0]) { + Worklist.Add(II); return II->getArgOperand(2); + } // Only lower element is used for operand 0 and 1. DemandedElts = 1; |
