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GlobalDCE: Deduplicate code. NFCI. 

llvm-svn: 285048
This commit is contained in:
Peter Collingbourne 2016-10-25 01:58:26 +00:00
parent 9825ab0433
commit 7695cb6da8
1 changed files with 18 additions and 35 deletions
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53
llvm/lib/Transforms/IPO/GlobalDCE.cpp
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@ -162,45 +162,28 @@ PreservedAnalyses GlobalDCEPass::run(Module &M, ModuleAnalysisManager &) {
GIF.setResolver(nullptr);
}
if (!DeadFunctions.empty()) {
// Now that all interferences have been dropped, delete the actual objects
// themselves.
for (Function *F : DeadFunctions) {
RemoveUnusedGlobalValue(*F);
M.getFunctionList().erase(F);
}
NumFunctions += DeadFunctions.size();
// Now that all interferences have been dropped, delete the actual objects
// themselves.
auto EraseUnusedGlobalValue = [&](GlobalValue *GV) {
RemoveUnusedGlobalValue(*GV);
GV->eraseFromParent();
Changed = true;
}
};
if (!DeadGlobalVars.empty()) {
for (GlobalVariable *GV : DeadGlobalVars) {
RemoveUnusedGlobalValue(*GV);
M.getGlobalList().erase(GV);
}
NumVariables += DeadGlobalVars.size();
Changed = true;
}
NumFunctions += DeadFunctions.size();
for (Function *F : DeadFunctions)
EraseUnusedGlobalValue(F);
// Now delete any dead aliases.
if (!DeadAliases.empty()) {
for (GlobalAlias *GA : DeadAliases) {
RemoveUnusedGlobalValue(*GA);
M.getAliasList().erase(GA);
}
NumAliases += DeadAliases.size();
Changed = true;
}
NumVariables += DeadGlobalVars.size();
for (GlobalVariable *GV : DeadGlobalVars)
EraseUnusedGlobalValue(GV);
// Now delete any dead aliases.
if (!DeadIFuncs.empty()) {
for (GlobalIFunc *GIF : DeadIFuncs) {
RemoveUnusedGlobalValue(*GIF);
M.getIFuncList().erase(GIF);
}
NumIFuncs += DeadIFuncs.size();
Changed = true;
}
NumAliases += DeadAliases.size();
for (GlobalAlias *GA : DeadAliases)
EraseUnusedGlobalValue(GA);
for (GlobalIFunc *GIF : DeadIFuncs)
EraseUnusedGlobalValue(GIF);
// Make sure that all memory is released
AliveGlobals.clear();