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| author | Ellis Hoag <ellis.sparky.hoag@gmail.com> | 2025-09-09 10:06:46 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-09-09 10:06:46 -0700 |
| commit | ada9da71646d16dc7f3b5bfb27446ff1d86aa8f8 (patch) | |
| tree | fd7a42c8a23e2ae5f0d5bcb1a3670d5153334b7a /llvm/lib/CodeGen/TargetPassConfig.cpp | |
| parent | 3ce16565c81df86b556cd25dc40c7a03000169dd (diff) | |
| download | llvm-ada9da71646d16dc7f3b5bfb27446ff1d86aa8f8.zip llvm-ada9da71646d16dc7f3b5bfb27446ff1d86aa8f8.tar.gz llvm-ada9da71646d16dc7f3b5bfb27446ff1d86aa8f8.tar.bz2 | |
[MachineOutliner] Add profile guided outlining (#154437)
Diffstat (limited to 'llvm/lib/CodeGen/TargetPassConfig.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TargetPassConfig.cpp | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/llvm/lib/CodeGen/TargetPassConfig.cpp b/llvm/lib/CodeGen/TargetPassConfig.cpp index f83973c..b6169e6 100644 --- a/llvm/lib/CodeGen/TargetPassConfig.cpp +++ b/llvm/lib/CodeGen/TargetPassConfig.cpp @@ -134,12 +134,18 @@ static cl::opt<cl::boolOrDefault> DebugifyCheckAndStripAll( static cl::opt<RunOutliner> EnableMachineOutliner( "enable-machine-outliner", cl::desc("Enable the machine outliner"), cl::Hidden, cl::ValueOptional, cl::init(RunOutliner::TargetDefault), - cl::values(clEnumValN(RunOutliner::AlwaysOutline, "always", - "Run on all functions guaranteed to be beneficial"), - clEnumValN(RunOutliner::NeverOutline, "never", - "Disable all outlining"), - // Sentinel value for unspecified option. - clEnumValN(RunOutliner::AlwaysOutline, "", ""))); + cl::values( + clEnumValN(RunOutliner::AlwaysOutline, "always", + "Run on all functions guaranteed to be beneficial"), + clEnumValN(RunOutliner::OptimisticPGO, "optimistic-pgo", + "Outline cold code only. If a code block does not have " + "profile data, optimistically assume it is cold."), + clEnumValN(RunOutliner::ConservativePGO, "conservative-pgo", + "Outline cold code only. If a code block does not have " + "profile, data, conservatively assume it is hot."), + clEnumValN(RunOutliner::NeverOutline, "never", "Disable all outlining"), + // Sentinel value for unspecified option. + clEnumValN(RunOutliner::AlwaysOutline, "", ""))); static cl::opt<bool> EnableGlobalMergeFunc( "enable-global-merge-func", cl::Hidden, cl::desc("Enable global merge functions that are based on hash function")); @@ -1224,12 +1230,9 @@ void TargetPassConfig::addMachinePasses() { if (TM->Options.EnableMachineOutliner && getOptLevel() != CodeGenOptLevel::None && EnableMachineOutliner != RunOutliner::NeverOutline) { - bool RunOnAllFunctions = - (EnableMachineOutliner == RunOutliner::AlwaysOutline); - bool AddOutliner = - RunOnAllFunctions || TM->Options.SupportsDefaultOutlining; - if (AddOutliner) - addPass(createMachineOutlinerPass(RunOnAllFunctions)); + if (EnableMachineOutliner != RunOutliner::TargetDefault || + TM->Options.SupportsDefaultOutlining) + addPass(createMachineOutlinerPass(EnableMachineOutliner)); } if (GCEmptyBlocks) |