[clang] [AIX] recognize vsr in inline asm for AIX (PR #68476)

[Chen Zheng via cfe-commits]

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@@ -807,6 +807,7 @@ ArrayRef<TargetInfo::GCCRegAlias> PPCTargetInfo::getGCCRegAliases() const {
 // PPC ELFABIv2 DWARF Definitoin "Table 2.26. Mappings of Common Registers".
 // vs0 ~ vs31 is mapping to 32 - 63,
 // vs32 ~ vs63 is mapping to 77 - 108.
+// And this mapping applies to all OSes which runs on powerpc.
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chenzheng1030 wrote:

Now always return `GCCAddlRegNames()` for all PPC ABIs including big-endian linux.

https://github.com/llvm/llvm-project/pull/68476