SixWeining added a comment.
In D136436#4314612 <https://reviews.llvm.org/D136436#4314612>, @xen0n wrote:
> Hi, any update on this? Given the `$`-less style has been long established at
> this time, and present in released GCC versions, it seems we indeed have to
> follow suit (and later make GCC accept ABI names for FPRs too). It will also
> make the ClangBuiltLinux work easier.
I tend to adopt @xry111's suggestion that "emulating" GCC's behavior in Clang
(not in LLVM):
> GCC supports register variable definition like register u64 a0 asm("a0"); but
> does not support addi.d a0, a0, a1 (because in GCC such a line in inline
> assembly is passed to GNU as directly).
> Is it possible to "emulate" the behavior in Clang?
And for `FPRs`, I suggest to keep current implementation until GCC support
non-prefixed names.
This means:
- Non-prefixed `GPRs` names ( and ABI names ) are allowed in register variable
definition and clobber list.
- Only `$` prefixed register names is allowed in assembler template.
- Do not support non-prefixed names for other registers ( including `FPRs` )
anywhere.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D136436/new/
https://reviews.llvm.org/D136436
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