vporpo created this revision.
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vporpo requested review of this revision.
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This patch adds several missing AliasList modifier functions, like
removeAlias(), eraseAlias() and insertAlias().
There is no longer need to access the list directly so it also makes
getAliaList() private.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D143958
Files:
lldb/source/Expression/IRExecutionUnit.cpp
llvm/include/llvm/IR/Module.h
llvm/lib/AsmParser/LLParser.cpp
llvm/lib/IR/Globals.cpp
llvm/lib/Transforms/IPO/GlobalOpt.cpp
llvm/unittests/IR/ModuleTest.cpp
Index: llvm/unittests/IR/ModuleTest.cpp
===================================================================
--- llvm/unittests/IR/ModuleTest.cpp
+++ llvm/unittests/IR/ModuleTest.cpp
@@ -159,4 +159,44 @@
EXPECT_EQ(Ratio, ProfileSummary->getPartialProfileRatio());
}
+TEST(ModuleTest, AliasList) {
+ // This tests all Module's functions that interact with Module::AliasList.
+ LLVMContext C;
+ SMDiagnostic Err;
+ LLVMContext Context;
+ std::unique_ptr<Module> M = parseAssemblyString(R"(
+declare void @Foo()
+@GA = alias void (), ptr @Foo
+)",
+ Err, Context);
+ Function *Foo = M->getFunction("Foo");
+ auto *GA = M->getNamedAlias("GA");
+ EXPECT_EQ(M->alias_size(), 1u);
+ auto *NewGA =
+ GlobalAlias::create(Foo->getType(), 0, GlobalValue::ExternalLinkage,
+ "NewGA", Foo, /*Parent=*/nullptr);
+ EXPECT_EQ(M->alias_size(), 1u);
+
+ M->insertAlias(M->aliases().begin(), NewGA);
+ EXPECT_EQ(&*M->aliases().begin(), NewGA);
+
+ M->removeAlias(NewGA);
+ EXPECT_EQ(M->alias_size(), 1u);
+ M->insertAlias(NewGA);
+ EXPECT_EQ(M->alias_size(), 2u);
+ EXPECT_EQ(&*std::prev(M->aliases().end()), NewGA);
+
+ auto Range = M->aliases();
+ EXPECT_EQ(&*Range.begin(), GA);
+ EXPECT_EQ(&*std::next(Range.begin()), NewGA);
+ EXPECT_EQ(std::next(Range.begin(), 2), Range.end());
+
+ M->removeAlias(NewGA);
+ EXPECT_EQ(M->alias_size(), 1u);
+
+ M->insertAlias(NewGA);
+ M->eraseAlias(NewGA);
+ EXPECT_EQ(M->alias_size(), 1u);
+}
+
} // end namespace
Index: llvm/lib/Transforms/IPO/GlobalOpt.cpp
===================================================================
--- llvm/lib/Transforms/IPO/GlobalOpt.cpp
+++ llvm/lib/Transforms/IPO/GlobalOpt.cpp
@@ -2360,7 +2360,7 @@
continue;
// Delete the alias.
- M.getAliasList().erase(&J);
+ M.eraseAlias(&J);
++NumAliasesRemoved;
Changed = true;
}
Index: llvm/lib/IR/Globals.cpp
===================================================================
--- llvm/lib/IR/Globals.cpp
+++ llvm/lib/IR/Globals.cpp
@@ -514,7 +514,7 @@
AddressSpace) {
setAliasee(Aliasee);
if (ParentModule)
- ParentModule->getAliasList().push_back(this);
+ ParentModule->insertAlias(this);
}
GlobalAlias *GlobalAlias::create(Type *Ty, unsigned AddressSpace,
@@ -546,11 +546,11 @@
}
void GlobalAlias::removeFromParent() {
- getParent()->getAliasList().remove(getIterator());
+ getParent()->removeAlias(this);
}
void GlobalAlias::eraseFromParent() {
- getParent()->getAliasList().erase(getIterator());
+ getParent()->eraseAlias(this);
}
void GlobalAlias::setAliasee(Constant *Aliasee) {
Index: llvm/lib/AsmParser/LLParser.cpp
===================================================================
--- llvm/lib/AsmParser/LLParser.cpp
+++ llvm/lib/AsmParser/LLParser.cpp
@@ -1141,7 +1141,7 @@
// Insert into the module, we know its name won't collide now.
if (IsAlias)
- M->getAliasList().push_back(GA.release());
+ M->insertAlias(GA.release());
else
M->getIFuncList().push_back(GI.release());
assert(GV->getName() == Name && "Should not be a name conflict!");
Index: llvm/include/llvm/IR/Module.h
===================================================================
--- llvm/include/llvm/IR/Module.h
+++ llvm/include/llvm/IR/Module.h
@@ -563,6 +563,20 @@
return &Module::FunctionList;
}
+ /// Detaches \p Alias from the list but does not delete it.
+ void removeAlias(GlobalAlias *Alias) { AliasList.remove(Alias); }
+ /// Removes \p Alias from the list and deletes it.
+ void eraseAlias(GlobalAlias *Alias) { AliasList.erase(Alias); }
+ /// Inserts \p Alias at the end of the alias list and takes ownership.
+ void insertAlias(GlobalAlias *Alias) { insertAlias(AliasList.end(), Alias); }
+ /// Inserts \p Alias into the alias list before \p Where and takes ownership.
+ void insertAlias(AliasListType::iterator Where, GlobalAlias *Alias) {
+ AliasList.insert(Where, Alias);
+ }
+ // Please use alias_size() to get the size of AliasList.
+ // Please use aliases() to get a range of all tha Alias objects in AliasList.
+
+private: // Please use functions like insertAlias(), removeAlias() etc.
/// Get the Module's list of aliases (constant).
const AliasListType &getAliasList() const { return AliasList; }
/// Get the Module's list of aliases.
@@ -571,7 +585,9 @@
static AliasListType Module::*getSublistAccess(GlobalAlias*) {
return &Module::AliasList;
}
+ friend class llvm::SymbolTableListTraits<llvm::GlobalAlias>;
+public:
/// Get the Module's list of ifuncs (constant).
const IFuncListType &getIFuncList() const { return IFuncList; }
/// Get the Module's list of ifuncs.
Index: lldb/source/Expression/IRExecutionUnit.cpp
===================================================================
--- lldb/source/Expression/IRExecutionUnit.cpp
+++ lldb/source/Expression/IRExecutionUnit.cpp
@@ -410,7 +410,7 @@
RegisterOneValue(global_var);
}
- for (llvm::GlobalAlias &global_alias : m_module->getAliasList()) {
+ for (llvm::GlobalAlias &global_alias : m_module->getAliases()) {
RegisterOneValue(global_alias);
}
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