Add support for metadata attachments for global variables.
This patch adds an IR, assembly and bitcode representation for metadata
attachments for globals. Future patches will port existing features to use
these new attachments.
Differential Revision: http://reviews.llvm.org/D20074
llvm-svn: 271348
diff --git a/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp b/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
index 6bf95b1..6051173 100644
--- a/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -344,6 +344,11 @@
EnumerateNamedMetadata(M);
SmallVector<std::pair<unsigned, MDNode *>, 8> MDs;
+ for (const GlobalVariable &GV : M.globals()) {
+ GV.getAllMetadata(MDs);
+ for (const auto &I : MDs)
+ EnumerateMetadata(&GV, I.second);
+ }
// Enumerate types used by function bodies and argument lists.
for (const Function &F : M) {
@@ -523,17 +528,18 @@
EnumerateMetadata(nullptr, MD->getOperand(i));
}
-unsigned ValueEnumerator::getMetadataFunctionID(const Function *F) const {
- return F ? getValueID(F) + 1 : 0;
+unsigned ValueEnumerator::getMetadataGlobalID(const GlobalObject *GO) const {
+ return GO ? getValueID(GO) + 1 : 0;
}
-void ValueEnumerator::EnumerateMetadata(const Function *F, const Metadata *MD) {
- EnumerateMetadata(getMetadataFunctionID(F), MD);
+void ValueEnumerator::EnumerateMetadata(const GlobalObject *GO,
+ const Metadata *MD) {
+ EnumerateMetadata(getMetadataGlobalID(GO), MD);
}
void ValueEnumerator::EnumerateFunctionLocalMetadata(
const Function &F, const LocalAsMetadata *Local) {
- EnumerateFunctionLocalMetadata(getMetadataFunctionID(&F), Local);
+ EnumerateFunctionLocalMetadata(getMetadataGlobalID(&F), Local);
}
void ValueEnumerator::dropFunctionFromMetadata(