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Enable dead function removal for internal function in whole-module compilation.

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This is controlled by a new isWholeModule() attribute in SILModule.

It gives about 9% code size reduction on the benchmark executables.
For test-suite reasons it is currently not done for the stdlib.



Swift SVN r22491
This commit is contained in:
Erik Eckstein
2014-10-03 14:14:23 +00:00
parent 60dcb9a435
commit 43f68b6974
19 changed files with 147 additions and 50 deletions
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13
lib/SILGen/SILGen.cpp
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@@ -854,7 +854,8 @@ void SILGenModule::emitSourceFile(SourceFile *sf, unsigned startElem) {
std::unique_ptr<SILModule>
SILModule::constructSIL(Module *mod, SourceFile *sf,
Optional<unsigned> startElem, bool makeModuleFragile) {
Optional<unsigned> startElem, bool makeModuleFragile,
bool isWholeModule) {
const DeclContext *DC;
if (startElem) {
assert(sf && "cannot have a start element without a source file");
@@ -867,7 +868,7 @@ SILModule::constructSIL(Module *mod, SourceFile *sf,
DC = mod;
}
std::unique_ptr<SILModule> m(new SILModule(mod, DC));
std::unique_ptr<SILModule> m(new SILModule(mod, DC, isWholeModule));
SILGenModule sgm(*m, mod, makeModuleFragile);
if (sf) {
@@ -890,13 +891,15 @@ SILModule::constructSIL(Module *mod, SourceFile *sf,
}
std::unique_ptr<SILModule> swift::performSILGeneration(Module *mod,
bool makeModuleFragile) {
return SILModule::constructSIL(mod, nullptr, None, makeModuleFragile);
bool makeModuleFragile,
bool accessControlEnabled) {
return SILModule::constructSIL(mod, nullptr, None, makeModuleFragile,
accessControlEnabled);
}
std::unique_ptr<SILModule>
swift::performSILGeneration(SourceFile &sf, Optional<unsigned> startElem,
bool makeModuleFragile) {
return SILModule::constructSIL(sf.getParentModule(), &sf, startElem,
makeModuleFragile);
makeModuleFragile, false);
}