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llvm/trunk/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
| Show First 20 Lines • Show All 525 Lines • ▼ Show 20 Lines | if (AllowReassociate && isFiniteNonZeroFp(C)) { | ||||
| RI->copyFastMathFlags(&I); | RI->copyFastMathFlags(&I); | ||||
| return RI; | return RI; | ||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| // sqrt(X) * sqrt(X) -> X | |||||
| if (AllowReassociate && (Op0 == Op1)) | |||||
| if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(Op0)) | |||||
| if (II->getIntrinsicID() == Intrinsic::sqrt) | |||||
| return ReplaceInstUsesWith(I, II->getOperand(0)); | |||||
| // Under unsafe algebra do: | // Under unsafe algebra do: | ||||
| // X * log2(0.5*Y) = X*log2(Y) - X | // X * log2(0.5*Y) = X*log2(Y) - X | ||||
| if (AllowReassociate) { | if (AllowReassociate) { | ||||
| Value *OpX = nullptr; | Value *OpX = nullptr; | ||||
| Value *OpY = nullptr; | Value *OpY = nullptr; | ||||
| IntrinsicInst *Log2; | IntrinsicInst *Log2; | ||||
| detectLog2OfHalf(Op0, OpY, Log2); | detectLog2OfHalf(Op0, OpY, Log2); | ||||
| ▲ Show 20 Lines • Show All 858 Lines • Show Last 20 Lines | |||||