https://github.com/tbaederr created
https://github.com/llvm/llvm-project/pull/106714
This does nothing and returns 0.
>From 45d97a71f5e76091234d0d919db4cb605d2d1949 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <tbae...@redhat.com>
Date: Fri, 30 Aug 2024 13:45:37 +0200
Subject: [PATCH] [clang][bytecode] Implement __noop
This does nothing and returns 0.
---
clang/lib/AST/ByteCode/InterpBuiltin.cpp | 4 ++++
clang/test/AST/ByteCode/ms.cpp | 2 ++
2 files changed, 6 insertions(+)
diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index 1a71bff25d2540..81e49f203524b7 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -1593,6 +1593,10 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const Function *F,
return false;
break;
+ case Builtin::BI__noop:
+ pushInteger(S, 0, Call->getType());
+ break;
+
default:
S.FFDiag(S.Current->getLocation(OpPC),
diag::note_invalid_subexpr_in_const_expr)
diff --git a/clang/test/AST/ByteCode/ms.cpp b/clang/test/AST/ByteCode/ms.cpp
index fe5ed219946e76..816f61fec37747 100644
--- a/clang/test/AST/ByteCode/ms.cpp
+++ b/clang/test/AST/ByteCode/ms.cpp
@@ -8,3 +8,5 @@
static_assert(_rotl(0x01, 5) == 32);
static_assert(alignof(__unaligned int) == 1, "");
+
+static_assert(__noop() == 0, "");
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