================
@@ -782,6 +782,8 @@ ArrayRef<const char *> PPCTargetInfo::getGCCRegNames()
const {
const TargetInfo::GCCRegAlias PPCTargetInfo::GCCRegAliases[] = {
// While some of these aliases do map to different registers
// they still share the same register name.
+ // Strictly speaking, "ca" is a subregister of "xer". However currently we
----------------
bzEq wrote:
> If that happens, would we have to add those other fields and then specify
> them as proper subregs of XER?
I think so. However, existing instructions look not using other fields like OV
and OV32.
> does GCC support on PowerPC?
Currently, GCC looks only support `xer` and `ca`. See
https://godbolt.org/z/6qWqc3Pdd. I have tried using `ov`, hit CE.
https://github.com/llvm/llvm-project/pull/77557
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