diff options
Diffstat (limited to 'include/llvm/Transforms')
| -rw-r--r-- | include/llvm/Transforms/Utils/SSAUpdater.h | 4 | ||||
| -rw-r--r-- | include/llvm/Transforms/Utils/SSAUpdaterImpl.h | 7 |
2 files changed, 7 insertions, 4 deletions
diff --git a/include/llvm/Transforms/Utils/SSAUpdater.h b/include/llvm/Transforms/Utils/SSAUpdater.h index 4a79116629902..d02607acbbb57 100644 --- a/include/llvm/Transforms/Utils/SSAUpdater.h +++ b/include/llvm/Transforms/Utils/SSAUpdater.h @@ -76,6 +76,10 @@ public: /// block. bool HasValueForBlock(BasicBlock *BB) const; + /// Return the value for the specified block if the SSAUpdater has one, + /// otherwise return nullptr. + Value *FindValueForBlock(BasicBlock *BB) const; + /// Construct SSA form, materializing a value that is live at the end /// of the specified block. Value *GetValueAtEndOfBlock(BasicBlock *BB); diff --git a/include/llvm/Transforms/Utils/SSAUpdaterImpl.h b/include/llvm/Transforms/Utils/SSAUpdaterImpl.h index b7649ba883344..cab0f3e715757 100644 --- a/include/llvm/Transforms/Utils/SSAUpdaterImpl.h +++ b/include/llvm/Transforms/Utils/SSAUpdaterImpl.h @@ -357,10 +357,9 @@ public: BBInfo *Info = *I; if (Info->DefBB != Info) { - // Record the available value at join nodes to speed up subsequent - // uses of this SSAUpdater for the same value. - if (Info->NumPreds > 1) - (*AvailableVals)[Info->BB] = Info->DefBB->AvailableVal; + // Record the available value to speed up subsequent uses of this + // SSAUpdater for the same value. + (*AvailableVals)[Info->BB] = Info->DefBB->AvailableVal; continue; } |