[PATCH] D136815: [clang][Interp] Unify visiting variable declarations

Shafik Yaghmour via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Mon Oct 31 09:06:24 PDT 2022


shafik added inline comments.


================
Comment at: clang/lib/AST/Interp/ByteCodeExprGen.h:282
+  bool isGlobalDecl(const VarDecl *VD) const {
+    return !VD->hasLocalStorage() || VD->isConstexpr();
+  }
----------------
tbaeder wrote:
> shafik wrote:
> > Why not `hasGlobalStorage()`?
> > 
> > Also what is the logic behind `isConstexpr()` check?
> Didn't know `isGlobalStorage()` existed ;)
> 
> Constexpr local variables can be handled like global ones, can't they? That was the logic behind it, nothing else. We can save ourselves the hassle of local variables in that case.
I think I am missing a level of logic here. I don't think of constant expressions as needing storage nor do I think of them as global variables.

So can you take a step back and explain how this fits in the bigger picture?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136815/new/

https://reviews.llvm.org/D136815



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