[clang] [Clang][AArch64]Add FP8 ACLE macros implementation (PR #140591)

[Paul Walker via cfe-commits]

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@@ -1046,6 +1082,29 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
       HasSVEB16B16 = true;
       HasSMEB16B16 = true;
     }
+
+    if (Feature == "+fp8")
+      HasFP8 = true;
+    if (Feature == "+fp8fma")
+      HasFP8FMA = true;
+    if (Feature == "+fp8dot2")
+      HasFP8DOT2 = true;
+    if (Feature == "+fp8dot4")
+      HasFP8DOT4 = true;
+    if (Feature == "+ssve-fp8dot2")
+      HasSSVE_FP8DOT2 = true;
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paulwalker-arm wrote:

This and the other `SSVE` features should also set `HasSME2`?

https://github.com/llvm/llvm-project/pull/140591