caio/clang-p2996
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(NFC) Track global summary liveness in GVFlags.

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Replace GVFlags::LiveRoot with GVFlags::Live and use that instead of
all the DeadSymbols sets. This is refactoring in order to make
liveness information available in the RegularLTO pipeline.

llvm-svn: 304466
This commit is contained in:
Evgeniy Stepanov
2017-06-01 20:30:06 +00:00
parent a5dbbc6ead
commit 56584bbf16
8 changed files with 114 additions and 103 deletions
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12
llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
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@@ -275,7 +275,7 @@ computeFunctionSummary(ModuleSummaryIndex &Index, const Module &M,
// FIXME: refactor this to use the same code that inliner is using.
F.isVarArg();
GlobalValueSummary::GVFlags Flags(F.getLinkage(), NotEligibleForImport,
/* LiveRoot = */ false);
/* Live = */ false);
auto FuncSummary = llvm::make_unique<FunctionSummary>(
Flags, NumInsts, RefEdges.takeVector(), CallGraphEdges.takeVector(),
TypeTests.takeVector(), TypeTestAssumeVCalls.takeVector(),
@@ -295,7 +295,7 @@ computeVariableSummary(ModuleSummaryIndex &Index, const GlobalVariable &V,
findRefEdges(Index, &V, RefEdges, Visited);
bool NonRenamableLocal = isNonRenamableLocal(V);
GlobalValueSummary::GVFlags Flags(V.getLinkage(), NonRenamableLocal,
/* LiveRoot = */ false);
/* Live = */ false);
auto GVarSummary =
llvm::make_unique<GlobalVarSummary>(Flags, RefEdges.takeVector());
if (NonRenamableLocal)
@@ -308,7 +308,7 @@ computeAliasSummary(ModuleSummaryIndex &Index, const GlobalAlias &A,
DenseSet<GlobalValue::GUID> &CantBePromoted) {
bool NonRenamableLocal = isNonRenamableLocal(A);
GlobalValueSummary::GVFlags Flags(A.getLinkage(), NonRenamableLocal,
/* LiveRoot = */ false);
/* Live = */ false);
auto AS = llvm::make_unique<AliasSummary>(Flags, ArrayRef<ValueInfo>{});
auto *Aliasee = A.getBaseObject();
auto *AliaseeSummary = Index.getGlobalValueSummary(*Aliasee);
@@ -323,7 +323,7 @@ computeAliasSummary(ModuleSummaryIndex &Index, const GlobalAlias &A,
static void setLiveRoot(ModuleSummaryIndex &Index, StringRef Name) {
if (ValueInfo VI = Index.getValueInfo(GlobalValue::getGUID(Name)))
for (auto &Summary : VI.getSummaryList())
Summary->setLiveRoot();
Summary->setLive(true);
}
ModuleSummaryIndex llvm::buildModuleSummaryIndex(
@@ -423,8 +423,8 @@ ModuleSummaryIndex llvm::buildModuleSummaryIndex(
return;
assert(GV->isDeclaration() && "Def in module asm already has definition");
GlobalValueSummary::GVFlags GVFlags(GlobalValue::InternalLinkage,
/* NotEligibleToImport */ true,
/* LiveRoot */ true);
/* NotEligibleToImport = */ true,
/* Live = */ true);
CantBePromoted.insert(GlobalValue::getGUID(Name));
// Create the appropriate summary type.
if (isa<Function>(GV)) {