[clang] [SPARC][clang] Add -m(no-)v8plus flags handling (PR #98713)

[Sergei Barannikov via cfe-commits]

================
@@ -179,6 +179,13 @@ void sparc::getSparcTargetFeatures(const Driver &D, const ArgList &Args,
       Features.push_back("-hard-quad-float");
   }
 
+  if (Arg *A = Args.getLastArg(options::OPT_mv8plus, options::OPT_mno_v8plus)) {
+    if (A->getOption().matches(options::OPT_mv8plus))
----------------
s-barannikov wrote:

Either way, the order of `-m8plus` relative to `-mcpu` shouldn't matter (one sets the environment, the other sets an ISA).


https://github.com/llvm/llvm-project/pull/98713