aaron/ispc
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Set the ScalarReplAggregate maximum structure size based on target vector width.

Browse Source
This commit is contained in:
ptu1
2012-11-13 12:35:45 -08:00
parent 7c16292cb7
commit 810784da1f
1 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
opt.cpp
View File

@@ -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());