[clang] [clang][bytecode][NFC] Bail out on non constant evaluated builtins (PR #130431)

[Timm Baeder via cfe-commits]

https://github.com/tbaederr created https://github.com/llvm/llvm-project/pull/130431

If the ASTContext says so, don't bother trying to constant evaluate the given builtin.

>From 1a085cf37983ca5acef83939371a5fee9d5f1813 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <tbaeder at redhat.com>
Date: Sat, 8 Mar 2025 20:09:41 +0100
Subject: [PATCH] [clang][bytecode][NFC] Bail out on non constant evaluated
 builtins

If the ASTContext says so, don't bother trying to constant evaluate the
given builtin.
---
 clang/lib/AST/ByteCode/InterpBuiltin.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index b8c4ef2f48a79..14e716daa3f12 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -2059,6 +2059,9 @@ static bool interp__builtin_memchr(InterpState &S, CodePtr OpPC,
 
 bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F,
                       const CallExpr *Call, uint32_t BuiltinID) {
+  if (!S.getASTContext().BuiltinInfo.isConstantEvaluated(BuiltinID))
+    return false;
+
   const InterpFrame *Frame = S.Current;
 
   std::optional<PrimType> ReturnT = S.getContext().classify(Call);