From d3205bbca3e0002d76282878986993e7e7994779 Mon Sep 17 00:00:00 2001
From: Tyker <tyker1@outlook.com>
Date: Mon, 26 Oct 2020 09:58:20 +0100
Subject: [Annotation] Allows annotation to carry some additional constant
 arguments.

This allows using annotation in a much more contexts than it currently has.
especially when annotation with template or constexpr.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D88645
---
 clang/lib/CodeGen/CodeGenFunction.cpp | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

(limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')

diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp
index 2498e2e..78a40aa 100644
--- a/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -2234,13 +2234,16 @@ void CodeGenFunction::emitAlignmentAssumption(llvm::Value *PtrValue,
 llvm::Value *CodeGenFunction::EmitAnnotationCall(llvm::Function *AnnotationFn,
                                                  llvm::Value *AnnotatedVal,
                                                  StringRef AnnotationStr,
-                                                 SourceLocation Location) {
-  llvm::Value *Args[4] = {
-    AnnotatedVal,
-    Builder.CreateBitCast(CGM.EmitAnnotationString(AnnotationStr), Int8PtrTy),
-    Builder.CreateBitCast(CGM.EmitAnnotationUnit(Location), Int8PtrTy),
-    CGM.EmitAnnotationLineNo(Location)
+                                                 SourceLocation Location,
+                                                 const AnnotateAttr *Attr) {
+  SmallVector<llvm::Value *, 5> Args = {
+      AnnotatedVal,
+      Builder.CreateBitCast(CGM.EmitAnnotationString(AnnotationStr), Int8PtrTy),
+      Builder.CreateBitCast(CGM.EmitAnnotationUnit(Location), Int8PtrTy),
+      CGM.EmitAnnotationLineNo(Location),
   };
+  if (Attr)
+    Args.push_back(CGM.EmitAnnotationArgs(Attr));
   return Builder.CreateCall(AnnotationFn, Args);
 }
 
@@ -2251,7 +2254,7 @@ void CodeGenFunction::EmitVarAnnotations(const VarDecl *D, llvm::Value *V) {
   for (const auto *I : D->specific_attrs<AnnotateAttr>())
     EmitAnnotationCall(CGM.getIntrinsic(llvm::Intrinsic::var_annotation),
                        Builder.CreateBitCast(V, CGM.Int8PtrTy, V->getName()),
-                       I->getAnnotation(), D->getLocation());
+                       I->getAnnotation(), D->getLocation(), I);
 }
 
 Address CodeGenFunction::EmitFieldAnnotations(const FieldDecl *D,
@@ -2268,7 +2271,7 @@ Address CodeGenFunction::EmitFieldAnnotations(const FieldDecl *D,
     // itself.
     if (VTy != CGM.Int8PtrTy)
       V = Builder.CreateBitCast(V, CGM.Int8PtrTy);
-    V = EmitAnnotationCall(F, V, I->getAnnotation(), D->getLocation());
+    V = EmitAnnotationCall(F, V, I->getAnnotation(), D->getLocation(), I);
     V = Builder.CreateBitCast(V, VTy);
   }
 
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