Use address-taken to disambiguate global variable and indirect memops.
Major steps include:
1). introduces a not-addr-taken bit-field in GlobalVariable
2). GlobalOpt pass sets "not-address-taken" if it proves a global varirable
dosen't have its address taken.
3). AA use this info for disambiguation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193251 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index e408cd1..3fca4ab 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1848,6 +1848,9 @@
new GlobalVariable(*TheModule, Ty, isConstant, Linkage, 0, "", 0,
TLM, AddressSpace, ExternallyInitialized);
NewGV->setAlignment(Alignment);
+ if (Record.size() > 10)
+ NewGV->setAddressMaybeTaken(Record[10]);
+
if (!Section.empty())
NewGV->setSection(Section);
NewGV->setVisibility(Visibility);
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index b082ba6..4f631b9 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -616,11 +616,13 @@
Vals.push_back(GV->hasSection() ? SectionMap[GV->getSection()] : 0);
if (GV->isThreadLocal() ||
GV->getVisibility() != GlobalValue::DefaultVisibility ||
- GV->hasUnnamedAddr() || GV->isExternallyInitialized()) {
+ GV->hasUnnamedAddr() || GV->isExternallyInitialized() ||
+ !GV->AddressMaybeTaken()) {
Vals.push_back(getEncodedVisibility(GV));
Vals.push_back(getEncodedThreadLocalMode(GV));
Vals.push_back(GV->hasUnnamedAddr());
Vals.push_back(GV->isExternallyInitialized());
+ Vals.push_back(GV->AddressMaybeTaken());
} else {
AbbrevToUse = SimpleGVarAbbrev;
}