[clang] [clang][Interp] Handle AttributedStmts (PR #66495)

[Timm Baeder via cfe-commits]

https://github.com/tbaederr created https://github.com/llvm/llvm-project/pull/66495

Just ignore the attributes.

>From c1c216058408cf54771bfdac71b0bcf28110f292 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <tbaeder at redhat.com>
Date: Fri, 15 Sep 2023 12:55:04 +0200
Subject: [PATCH] [clang][Interp] Handle AttributedStmts

Just ignore the attributes.
---
 clang/lib/AST/Interp/ByteCodeStmtGen.cpp | 8 ++++++++
 clang/lib/AST/Interp/ByteCodeStmtGen.h   | 1 +
 clang/test/AST/Interp/if.cpp             | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/clang/lib/AST/Interp/ByteCodeStmtGen.cpp b/clang/lib/AST/Interp/ByteCodeStmtGen.cpp
index b7553d8963ff0ee..a0f50c3e69dd918 100644
--- a/clang/lib/AST/Interp/ByteCodeStmtGen.cpp
+++ b/clang/lib/AST/Interp/ByteCodeStmtGen.cpp
@@ -246,6 +246,8 @@ bool ByteCodeStmtGen<Emitter>::visitStmt(const Stmt *S) {
   case Stmt::GCCAsmStmtClass:
   case Stmt::MSAsmStmtClass:
     return visitAsmStmt(cast<AsmStmt>(S));
+  case Stmt::AttributedStmtClass:
+    return visitAttributedStmt(cast<AttributedStmt>(S));
   case Stmt::NullStmtClass:
     return true;
   default: {
@@ -628,6 +630,12 @@ bool ByteCodeStmtGen<Emitter>::visitAsmStmt(const AsmStmt *S) {
   return this->emitInvalid(S);
 }
 
+template <class Emitter>
+bool ByteCodeStmtGen<Emitter>::visitAttributedStmt(const AttributedStmt *S) {
+  // Ignore all attributes.
+  return this->visitStmt(S->getSubStmt());
+}
+
 namespace clang {
 namespace interp {
 
diff --git a/clang/lib/AST/Interp/ByteCodeStmtGen.h b/clang/lib/AST/Interp/ByteCodeStmtGen.h
index 278e804a803c951..3bdcdd78f397e5b 100644
--- a/clang/lib/AST/Interp/ByteCodeStmtGen.h
+++ b/clang/lib/AST/Interp/ByteCodeStmtGen.h
@@ -68,6 +68,7 @@ class ByteCodeStmtGen final : public ByteCodeExprGen<Emitter> {
   bool visitCaseStmt(const CaseStmt *S);
   bool visitDefaultStmt(const DefaultStmt *S);
   bool visitAsmStmt(const AsmStmt *S);
+  bool visitAttributedStmt(const AttributedStmt *S);
 
   bool emitLambdaStaticInvokerBody(const CXXMethodDecl *MD);
 
diff --git a/clang/test/AST/Interp/if.cpp b/clang/test/AST/Interp/if.cpp
index 2449ace4dd6c6b5..86ae8de6f73ebb7 100644
--- a/clang/test/AST/Interp/if.cpp
+++ b/clang/test/AST/Interp/if.cpp
@@ -43,4 +43,11 @@ namespace InitDecl {
     return false;
   }
   static_assert(!f2(), "");
+
+
+  constexpr int attrs() {
+    if (1) [[likely]] {}
+    return 1;
+  }
+  static_assert(attrs() == 1, "");
 };