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Merge pull request #405 from jbrodman/master

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Tweaked Scalar Repl of Aggregates Optimization
This commit is contained in:
Jean-Luc Duprat
2012-11-19 13:12:26 -08:00
parent d3b86dcc90 275cdb1713
commit 65ca795030
1 changed files with 9 additions and 3 deletions
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12
opt.cpp
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@@ -471,8 +471,14 @@ Optimize(llvm::Module *module, int optLevel) {
}
optPM.add(llvm::createDeadInstEliminationPass());
// Max struct size threshold for scalar replacement is
// 1) 4 fields (r,g,b,w)
// 2) field size: vectorWidth * sizeof(float)
const int field_limit = 4;
int sr_threshold = g->target.vectorWidth * sizeof(float) * field_limit;
// On to more serious optimizations
optPM.add(llvm::createScalarReplAggregatesPass());
optPM.add(llvm::createScalarReplAggregatesPass(sr_threshold));
optPM.add(llvm::createInstructionCombiningPass());
optPM.add(llvm::createCFGSimplificationPass());
optPM.add(llvm::createPromoteMemoryToRegisterPass());
@@ -494,7 +500,7 @@ Optimize(llvm::Module *module, int optLevel) {
optPM.add(llvm::createInstructionCombiningPass());
optPM.add(llvm::createJumpThreadingPass());
optPM.add(llvm::createCFGSimplificationPass());
optPM.add(llvm::createScalarReplAggregatesPass());
optPM.add(llvm::createScalarReplAggregatesPass(sr_threshold));
optPM.add(llvm::createInstructionCombiningPass());
optPM.add(llvm::createTailCallEliminationPass());
@@ -540,7 +546,7 @@ Optimize(llvm::Module *module, int optLevel) {
optPM.add(llvm::createFunctionInliningPass());
optPM.add(llvm::createArgumentPromotionPass());
optPM.add(llvm::createScalarReplAggregatesPass(-1, false));
optPM.add(llvm::createScalarReplAggregatesPass(sr_threshold, false));
optPM.add(llvm::createInstructionCombiningPass());
optPM.add(llvm::createCFGSimplificationPass());
optPM.add(llvm::createReassociatePass());