rjmccall added inline comments.
================
Comment at: clang/lib/AST/Expr.cpp:693
else
- MC->mangleName(ND, Out);
+ GD = GlobalDecl(ND);
+ MC->mangleName(GD, Out);
----------------
This will need an extension for your case, right? Maybe there should be
comments in `GlobalDecl` pointing out all the places where we need to go from
an arbitrary `Decl*` to a `GlobalDecl` so that someone adding a new kind of
discriminated declaration will know to update them all.
================
Comment at: clang/lib/AST/ItaniumMangle.cpp:1563
+ else
+ GD = GlobalDecl(dyn_cast<FunctionDecl>(DC));
+ return GD;
----------------
`cast`? But I'm not sure this is true, local entities can be in non-function
declarations: blocks, ObjC methods, and captured statements. You can just
`cast<Decl>(DC)`.
================
Comment at: clang/lib/CodeGen/CodeGenModule.cpp:1028
else
- MC.mangleName(ND, Out);
+ MC.mangleName(GD, Out);
} else {
----------------
yaxunl wrote:
> yaxunl wrote:
> > rjmccall wrote:
> > > What would be necessary in order for this to turn into just
> > > `mangleName(GD, Out)`? I suspect there are a lot of subtle assumptions
> > > between the different mangling methods today that could probably be
> > > broken down a bit and we'd end up with something much cleaner.
> > It seems to be just API changes. I will try changing them.
> I got one issue. When I tried to create `GlobalDecl(CD, Ctor_DefaultClosure)`
> I got assertion
>
> include/llvm/ADT/PointerIntPair.h:186: static intptr_t
> llvm::PointerIntPairInfo<const clang::Decl *, 2,
> llvm::PointerLikeTypeTraits<const clang::Decl *> >::updateInt(intptr_t,
> intptr_t) [PointerT = const clang::Decl *, IntBits = 2, PtrTraits =
> llvm::PointerLikeTypeTraits<const clang::Decl *>]: Assertion `(IntWord &
> ~IntMask) == 0 && "Integer too large for field"' failed.
> CXXConstructor=v:7:25 (default constructor) (converting constructor)
>
> This is because Ctor_DefaultClosure has value 4, which exceeds the value that
> can be put into PointerIntPairInfo
It looks like `Decl` is declared with alignment 8, so yeah, it's safe to make
that a 3-bit field.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D75700/new/
https://reviews.llvm.org/D75700
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