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Modify the optimization pipeline to better support custom array iterators #11303

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Merged
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Aug 2, 2017
Merged

Modify the optimization pipeline to better support custom array iterators #11303

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8 changes: 7 additions & 1 deletion lib/SILOptimizer/PassManager/PassPipeline.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -269,10 +269,11 @@ void addSSAPasses(SILPassPipelinePlan &P, OptimizationLevelKind OpLevel) {
P.addCSE();
P.addRedundantLoadElimination();

// Perform retain/release code motion and run the first ARC optimizer.
P.addPerformanceConstantPropagation();
P.addCSE();
P.addDCE();

// Perform retain/release code motion and run the first ARC optimizer.
P.addEarlyCodeMotion();
P.addReleaseHoisting();
P.addARCSequenceOpts();
Expand Down Expand Up @@ -333,6 +334,10 @@ static void addMidLevelPassPipeline(SILPassPipelinePlan &P) {
// Specialize partially applied functions with dead arguments as a preparation
// for CapturePropagation.
P.addDeadArgSignatureOpt();

// Run loop unrolling after inlining and constant propagation, because loop
// trip counts may have became constant.
P.addLoopUnroll();
}

static void addClosureSpecializePassPipeline(SILPassPipelinePlan &P) {
Expand Down Expand Up @@ -402,6 +407,7 @@ static void addLateLoopOptPassPipeline(SILPassPipelinePlan &P) {

// Remove dead code.
P.addDCE();
P.addSILCombine();
P.addSimplifyCFG();

// Try to hoist all releases, including epilogue releases. This should be
Expand Down