[PATCH] D76360: [PPC][AIX] Emit correct Vaarg for 32BIT-AIX in clang

[Xiangling Liao via Phabricator via cfe-commits]

Xiangling_L added inline comments.


================
Comment at: clang/lib/CodeGen/TargetInfo.cpp:4205
+
+class PPCAIX32TargetCodeGenInfo : public TargetCodeGenInfo {
+public:
----------------
sfertile wrote:
> Xiangling_L wrote:
> > I have a question here. AIX32 falls into PPC32 target, so why we don't inherit from `PPC32TargetCodeGenInfo` instead?
> Do we need a separate AIX specific class? We are implementing 2 functions, 1 of which is the same implementation as its `PPC32TargetCodeGenInfo` counterpart. If we have access to the triple, we can  return true when the OS is AIX in `PPC32TargetCodeGenInfo::initDwarfEHRegSizeTable`. With the implementations being nearly identical (and after enabling DwarfEHRegSizeTable they will be identical) I think we are better to not add a new class if we can avoid it.
Not adding a new class makes sense to me if we are sure that `DwarfEHRegSizeTable` will be identical/viable for AIX.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76360/new/

https://reviews.llvm.org/D76360