mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-07 01:54:50 +00:00
Patch by Michael Ilseman! This fixes SimplifyCFGOpt::FoldValueComparisonIntoPredecessors to preserve metata when folding conditional branches into switches. void foo(int x) { if (x == 0) bar(1); else if (__builtin_expect(x == 10, 1)) bar(2); else if (x == 20) bar(3); } CFG: B0 | \ | X0 B10 | \ | X10 B20 | \ E X20 Merge B0-B10: w(B0-X0) = w(B0-X0)*sum-weights(B10) = w(B0-X0) * (w(B10-X10) + w(B10-B20)) w(B0-X10) = w(B0-B10) * w(B10-X10) w(B0-B20) = w(B0-B10) * w(B10-B20) B0 __ | \ \ | X10 X0 B20 | \ E X20 Merge B0-B20: w(B0-X0) = w(B0-X0) * sum-weights(B20) = w(B0-X0) * (w(B20-E) + w(B20-X20)) w(B0-X10) = w(B0-X10) * sum-weights(B20) = ... w(B0-X20) = w(B0-B20) * w(B20-X20) w(B0-E) = w(B0-B20) * w(B20-E) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162868 91177308-0d34-0410-b5e6-96231b3b80d8 |
||
---|---|---|
.. | ||
AddrModeMatcher.cpp | ||
BasicBlockUtils.cpp | ||
BreakCriticalEdges.cpp | ||
BuildLibCalls.cpp | ||
CloneFunction.cpp | ||
CloneModule.cpp | ||
CMakeLists.txt | ||
CmpInstAnalysis.cpp | ||
CodeExtractor.cpp | ||
DemoteRegToStack.cpp | ||
InlineFunction.cpp | ||
InstructionNamer.cpp | ||
LCSSA.cpp | ||
LLVMBuild.txt | ||
Local.cpp | ||
LoopSimplify.cpp | ||
LoopUnroll.cpp | ||
LoopUnrollRuntime.cpp | ||
LowerExpectIntrinsic.cpp | ||
LowerInvoke.cpp | ||
LowerSwitch.cpp | ||
Makefile | ||
Mem2Reg.cpp | ||
ModuleUtils.cpp | ||
PromoteMemoryToRegister.cpp | ||
SimplifyCFG.cpp | ||
SimplifyIndVar.cpp | ||
SimplifyInstructions.cpp | ||
SSAUpdater.cpp | ||
UnifyFunctionExitNodes.cpp | ||
Utils.cpp | ||
ValueMapper.cpp |