void optimize(IRUnit& unit, IRBuilder& irBuilder, TransKind kind) {
Timer timer(Timer::optimize);
assertx(checkEverything(unit));
fullDCE(unit);
printUnit(6, unit, " after initial DCE ");
assertx(checkEverything(unit));
if (RuntimeOption::EvalHHIRTypeCheckHoisting) {
doPass(unit, hoistTypeChecks, DCE::Minimal);
}
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(unit, optimizePredictions, DCE::None);
}
if (RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Full);
doPass(unit, cleanCfg, DCE::None);
}
if (RuntimeOption::EvalHHIRGlobalValueNumbering) {
doPass(unit, gvn, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeLoads, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeStores, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRRefcountOpts) {
doPass(unit, optimizeRefcounts2, DCE::Full);
}
if (RuntimeOption::EvalHHIRLICM && RuntimeOption::EvalJitLoops &&
cfgHasLoop(unit) && kind != TransKind::Profile) {
doPass(unit, optimizeLoopInvariantCode, DCE::Minimal);
}
doPass(unit, removeExitPlaceholders, DCE::Full);
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(unit, insertAsserts, DCE::None);
}
// Perform final cleanup passes to collapse any critical edges that were
// split, and simplify our instructions before shipping off to codegen.
doPass(unit, cleanCfg, DCE::None);
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Full);
}
}
void optimize(IRUnit& unit, TransKind kind) {
Timer timer(Timer::optimize, unit.logEntry().get_pointer());
assertx(checkEverything(unit));
fullDCE(unit);
printUnit(6, unit, " after initial DCE ");
assertx(checkEverything(unit));
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(unit, optimizePredictions, DCE::None);
}
if (RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Full);
doPass(unit, cleanCfg, DCE::None);
}
if (RuntimeOption::EvalHHIRGlobalValueNumbering) {
doPass(unit, gvn, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeLoads, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeStores, DCE::Full);
}
if (RuntimeOption::EvalHHIRPartialInlineFrameOpts) {
doPass(unit, optimizeInlineReturns, DCE::Full);
}
doPass(unit, optimizePhis, DCE::Full);
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRRefcountOpts) {
doPass(unit, optimizeRefcounts, DCE::Full);
}
if (RuntimeOption::EvalHHIRLICM && cfgHasLoop(unit) &&
kind != TransKind::Profile) {
doPass(unit, optimizeLoopInvariantCode, DCE::Minimal);
}
doPass(unit, simplifyOrdStrIdx, DCE::Minimal);
doPass(unit, removeExitPlaceholders, DCE::Full);
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(unit, insertAsserts, DCE::None);
}
// Perform final cleanup passes to collapse any critical edges that were
// split, and simplify our instructions before shipping off to codegen.
doPass(unit, cleanCfg, DCE::None);
if (kind != TransKind::Profile &&
RuntimeOption::EvalHHIRGlobalValueNumbering) {
doPass(unit, gvn, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Full);
}
doPass(unit, fixBlockHints, DCE::None);
}
void optimize(IRUnit& unit, IRBuilder& irBuilder, TransKind kind) {
Timer timer(Timer::optimize);
assertx(checkEverything(unit));
auto const hasLoop = RuntimeOption::EvalJitLoops && cfgHasLoop(unit);
auto const func = unit.entry()->front().marker().func();
auto const regionMode = pgoRegionMode(*func);
auto const traceMode = kind != TransKind::Optimize ||
regionMode == PGORegionMode::Hottrace;
// TODO (#5792564): Guard relaxation doesn't work with loops.
// TODO (#6599498): Guard relaxation is broken in wholecfg mode.
if (shouldHHIRRelaxGuards() && !hasLoop && traceMode) {
Timer _t(Timer::optimize_relaxGuards);
const bool simple = kind == TransKind::Profile &&
(RuntimeOption::EvalJitRegionSelector == "tracelet" ||
RuntimeOption::EvalJitRegionSelector == "method");
RelaxGuardsFlags flags = (RelaxGuardsFlags)
(RelaxReflow | (simple ? RelaxSimple : RelaxNormal));
auto changed = relaxGuards(unit, *irBuilder.guards(), flags);
if (changed) {
printUnit(6, unit, "after guard relaxation");
mandatoryDCE(unit); // relaxGuards can leave unreachable preds.
}
if (RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Minimal);
doPass(unit, cleanCfg, DCE::None);
}
}
fullDCE(unit);
printUnit(6, unit, " after initial DCE ");
assertx(checkEverything(unit));
if (RuntimeOption::EvalHHIRTypeCheckHoisting) {
doPass(unit, hoistTypeChecks, DCE::None);
}
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(unit, optimizePredictions, DCE::None);
}
if (RuntimeOption::EvalHHIRSimplification) {
doPass(unit, simplifyPass, DCE::Full);
doPass(unit, cleanCfg, DCE::None);
}
if (RuntimeOption::EvalHHIRGlobalValueNumbering) {
doPass(unit, gvn, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeLoads, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRMemoryOpts) {
doPass(unit, optimizeStores, DCE::Full);
}
if (kind != TransKind::Profile && RuntimeOption::EvalHHIRRefcountOpts) {
doPass(unit, optimizeRefcounts2, DCE::Full);
}
if (RuntimeOption::EvalHHIRLICM) {
if (kind != TransKind::Profile && hasLoop) {
// The clean pass is just to stress lack of pre_headers for now, since
// LICM is a disabled prototype pass.
doPass(unit, cleanCfg, DCE::None);
doPass(unit, optimizeLoopInvariantCode, DCE::Minimal);
}
}
doPass(unit, removeExitPlaceholders, DCE::Full);
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(unit, insertAsserts, DCE::None);
}
}