diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUtils.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUtils.cpp | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp index 2f0fd42..67e2095 100644 --- a/llvm/lib/Transforms/Utils/LoopUtils.cpp +++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp @@ -923,13 +923,13 @@ bool InductionDescriptor::isFPInductionPHI(PHINode *Phi, const Loop *TheLoop, } /// This function is called when we suspect that the update-chain of a phi node -/// (whose symbolic SCEV expression sin \p PhiScev) contains redundant casts, -/// that can be ignored. (This can happen when the PSCEV rewriter adds a runtime -/// predicate P under which the SCEV expression for the phi can be the -/// AddRecurrence \p AR; See createAddRecFromPHIWithCast). We want to find the -/// cast instructions that are involved in the update-chain of this induction. -/// A caller that adds the required runtime predicate can be free to drop these -/// cast instructions, and compute the phi using \p AR (instead of some scev +/// (whose symbolic SCEV expression sin \p PhiScev) contains redundant casts, +/// that can be ignored. (This can happen when the PSCEV rewriter adds a runtime +/// predicate P under which the SCEV expression for the phi can be the +/// AddRecurrence \p AR; See createAddRecFromPHIWithCast). We want to find the +/// cast instructions that are involved in the update-chain of this induction. +/// A caller that adds the required runtime predicate can be free to drop these +/// cast instructions, and compute the phi using \p AR (instead of some scev /// expression with casts). /// /// For example, without a predicate the scev expression can take the following @@ -964,7 +964,7 @@ static bool getCastsForInductionPHI(PredicatedScalarEvolution &PSE, assert(PSE.getSCEV(PN) == AR && "Unexpected phi node SCEV expression"); const Loop *L = AR->getLoop(); - // Find any cast instructions that participate in the def-use chain of + // Find any cast instructions that participate in the def-use chain of // PhiScev in the loop. // FORNOW/TODO: We currently expect the def-use chain to include only // two-operand instructions, where one of the operands is an invariant. |