diff options
Diffstat (limited to 'lib/CodeGen/Passes.cpp')
| -rw-r--r-- | lib/CodeGen/Passes.cpp | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/lib/CodeGen/Passes.cpp b/lib/CodeGen/Passes.cpp index 53d1fcf737..13d1bbc310 100644 --- a/lib/CodeGen/Passes.cpp +++ b/lib/CodeGen/Passes.cpp @@ -37,8 +37,9 @@ static cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden, cl::desc("Disable tail duplication")); static cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden, cl::desc("Disable pre-register allocation tail duplication")); -static cl::opt<bool> EnableBlockPlacement("enable-block-placement", - cl::Hidden, cl::desc("Enable probability-driven block placement")); +static cl::opt<bool> DisableBlockPlacement("disable-block-placement", + cl::Hidden, cl::desc("Disable the probability-driven block placement, and " + "re-enable the old code placement pass")); static cl::opt<bool> EnableBlockPlacementStats("enable-block-placement-stats", cl::Hidden, cl::desc("Collect probability-driven block placement stats")); static cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, @@ -610,10 +611,10 @@ void TargetPassConfig::addMachineLateOptimization() { /// Add standard basic block placement passes. void TargetPassConfig::addBlockPlacement() { AnalysisID ID = &NoPassID; - if (EnableBlockPlacement) { - // MachineBlockPlacement is an experimental pass which is disabled by - // default currently. Eventually it should subsume CodePlacementOpt, so - // when enabled, the other is disabled. + if (!DisableBlockPlacement) { + // MachineBlockPlacement is a new pass which subsumes the functionality of + // CodPlacementOpt. The old code placement pass can be restored by + // disabling block placement, but eventually it will be removed. ID = addPass(MachineBlockPlacementID); } else { ID = addPass(CodePlacementOptID); |