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llvm/lib/Transforms/Scalar/JumpThreading.cpp
| Show First 20 Lines • Show All 413 Lines • ▼ Show 20 Lines | bool JumpThreadingPass::runImpl(Function &F, TargetLibraryInfo *TLI_, | ||||
| if (!ThreadAcrossLoopHeaders) | if (!ThreadAcrossLoopHeaders) | ||||
| findLoopHeaders(F); | findLoopHeaders(F); | ||||
| bool EverChanged = false; | bool EverChanged = false; | ||||
| bool Changed; | bool Changed; | ||||
| do { | do { | ||||
| Changed = false; | Changed = false; | ||||
| for (auto &BB : F) { | auto BBList = &(F.getBasicBlockList()); | ||||
| auto FuncRevIter = make_range(BBList->rbegin(), BBList->rend()); | |||||
| for (auto &BB : FuncRevIter) { | |||||
| if (Unreachable.count(&BB)) | if (Unreachable.count(&BB)) | ||||
| continue; | continue; | ||||
| while (processBlock(&BB)) // Thread all of the branches we can over BB. | while (processBlock(&BB)) // Thread all of the branches we can over BB. | ||||
| Changed = true; | Changed = true; | ||||
| // Jump threading may have introduced redundant debug values into BB | // Jump threading may have introduced redundant debug values into BB | ||||
| // which should be removed. | // which should be removed. | ||||
| if (Changed) | if (Changed) | ||||
| ▲ Show 20 Lines • Show All 2,631 Lines • Show Last 20 Lines | |||||