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comparison gen/optimizer.cpp @ 1219:a0844cc67840

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Tweak some optimizations. Delegates passed to inlined functions now also stand a chance of being inlined. This should make opApply as efficient as a regular loop, as long as both opApply and the foreachbody are eligible for inlining; which is to say most non-virtual opApply invocations will likely get fully inlined now. (Note: above requires -O2 -enable-inlining or -O3)
author Frits van Bommel <fvbommel wxs.nl>
date Thu, 16 Apr 2009 11:58:43 +0200
parents cc1efa23030a
children e945d2a0999e
comparison
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1218:7977096f0e49 1219:a0844cc67840
63 { 63 {
64 //pm.add(createStripDeadPrototypesPass()); 64 //pm.add(createStripDeadPrototypesPass());
65 pm.add(createGlobalDCEPass()); 65 pm.add(createGlobalDCEPass());
66 pm.add(createRaiseAllocationsPass()); 66 pm.add(createRaiseAllocationsPass());
67 pm.add(createCFGSimplificationPass()); 67 pm.add(createCFGSimplificationPass());
68 pm.add(createPromoteMemoryToRegisterPass()); 68 if (optimizeLevel == 1)
69 pm.add(createPromoteMemoryToRegisterPass());
70 else
71 pm.add(createScalarReplAggregatesPass());
69 pm.add(createGlobalOptimizerPass()); 72 pm.add(createGlobalOptimizerPass());
70 pm.add(createGlobalDCEPass()); 73 pm.add(createGlobalDCEPass());
71 } 74 }
72 75
73 // -O2 76 // -O2
81 } 84 }
82 85
83 // -inline 86 // -inline
84 if (doInline()) { 87 if (doInline()) {
85 pm.add(createFunctionInliningPass()); 88 pm.add(createFunctionInliningPass());
89
90 if (optimizeLevel >= 2) {
91 // Run some optimizations to clean up after inlining.
92 pm.add(createInstructionCombiningPass());
93 pm.add(createScalarReplAggregatesPass());
94
95 // Inline again, to catch things like foreach delegates
96 // passed inlined opApply's where the function wasn't
97 // known during the first inliner pass.
98 pm.add(createFunctionInliningPass());
99
100 // Run clean-up again.
101 pm.add(createInstructionCombiningPass());
102 pm.add(createScalarReplAggregatesPass());
103 }
86 } 104 }
87 105
88 // -O3 106 // -O3
89 if (optimizeLevel >= 3) 107 if (optimizeLevel >= 3)
90 { 108 {