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Add option to turn off codegen improvements when mask 'all on' is statically known.

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This commit is contained in:
Matt Pharr
2011-12-11 16:16:36 -08:00
parent 20536bb339
commit 46bfef3fce
7 changed files with 88 additions and 33 deletions
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18
opt.cpp
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@@ -250,7 +250,7 @@ Optimize(llvm::Module *module, int optLevel) {
optPM.add(llvm::createReassociatePass());
optPM.add(llvm::createConstantPropagationPass());
if (!g->opt.disableMaskedStoreOptimizations) {
if (!g->opt.disableMaskAllOnOptimizations) {
optPM.add(CreateIntrinsicsOptPass());
optPM.add(CreateMaskedStoreOptPass());
}
@@ -287,7 +287,7 @@ Optimize(llvm::Module *module, int optLevel) {
optPM.add(llvm::createInstructionCombiningPass());
optPM.add(llvm::createTailCallEliminationPass());
if (!g->opt.disableMaskedStoreOptimizations) {
if (!g->opt.disableMaskAllOnOptimizations) {
optPM.add(CreateIntrinsicsOptPass());
optPM.add(CreateMaskedStoreOptPass());
}
@@ -334,12 +334,16 @@ Optimize(llvm::Module *module, int optLevel) {
builder.DisableUnrollLoops = true;
builder.populateFunctionPassManager(funcPM);
builder.populateModulePassManager(optPM);
optPM.add(CreateIsCompileTimeConstantPass(true));
optPM.add(CreateIsCompileTimeConstantPass(false));
optPM.add(CreateIntrinsicsOptPass());
builder.populateLTOPassManager(optPM, true /* internalize */,
true /* inline once again */);
optPM.add(CreateIsCompileTimeConstantPass(true));
optPM.add(CreateIntrinsicsOptPass());
builder.populateModulePassManager(optPM);
#endif
optPM.add(CreateMakeInternalFuncsStaticPass());
@@ -2221,9 +2225,11 @@ IsCompileTimeConstantPass::runOnBasicBlock(llvm::BasicBlock &bb) {
// not a __is_compile_time_constant_* function
continue;
// This optimization pass can be disabled with the (poorly named)
// disableGatherScatterFlattening option.
if (g->opt.disableGatherScatterFlattening) {
// This optimization pass can be disabled with both the (poorly
// named) disableGatherScatterFlattening option and
// disableMaskAllOnOptimizations.
if (g->opt.disableGatherScatterFlattening ||
g->opt.disableMaskAllOnOptimizations) {
llvm::ReplaceInstWithValue(i->getParent()->getInstList(), i, LLVMFalse);
modifiedAny = true;
goto restart;