commit d5180ea134796f96b0c6c4ab23c592d58f25733d
author Adrian Prantl <aprantl@apple.com> Tue Mar 03 16:05:23 2020 -0800
committer Adrian Prantl <aprantl@apple.com> Wed Mar 11 18:47:30 2020 -0700
tree 9a6b1036e3e428b9f313184794742030f8295f91
parent 49d4e0e3278c640164c29c92ee624d8935bc19b6

Add debug info support for Swift/Clang APINotes.

In order for dsymutil to collect .apinotes files (which capture
attributes such as nullability, Swift import names, and availability),
I want to propose adding an apinotes: field to DIModule that gets
translated into a DW_AT_LLVM_apinotes (path) nested inside
DW_TAG_module. This will be primarily used by LLDB to indirectly
extract the Swift names of Clang declarations that were deserialized
from DWARF.

<rdar://problem/59514626>

Differential Revision: https://reviews.llvm.org/D75585

llvm/lib/IR/LLVMContextImpl.h

diff --git a/llvm/lib/IR/LLVMContextImpl.h b/llvm/lib/IR/LLVMContextImpl.h
index 7f324b1..e136bd5 100644
--- a/llvm/lib/IR/LLVMContextImpl.h
+++ b/llvm/lib/IR/LLVMContextImpl.h
@@ -819,20 +819,23 @@
   MDString *Name;
   MDString *ConfigurationMacros;
   MDString *IncludePath;
+  MDString *APINotesFile;
 
   MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *ConfigurationMacros,
-                MDString *IncludePath)
+                MDString *IncludePath, MDString *APINotesFile)
       : Scope(Scope), Name(Name), ConfigurationMacros(ConfigurationMacros),
-        IncludePath(IncludePath) {}
+        IncludePath(IncludePath), APINotesFile(APINotesFile) {}
   MDNodeKeyImpl(const DIModule *N)
       : Scope(N->getRawScope()), Name(N->getRawName()),
         ConfigurationMacros(N->getRawConfigurationMacros()),
-        IncludePath(N->getRawIncludePath()) {}
+        IncludePath(N->getRawIncludePath()),
+        APINotesFile(N->getRawAPINotesFile()) {}
 
   bool isKeyOf(const DIModule *RHS) const {
     return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
            ConfigurationMacros == RHS->getRawConfigurationMacros() &&
-           IncludePath == RHS->getRawIncludePath();
+           IncludePath == RHS->getRawIncludePath() &&
+           APINotesFile == RHS->getRawAPINotesFile();
   }
 
   unsigned getHashValue() const {