[clang] [Clang][ARM] Ensure FPU Features are parsed when targeting `cc1as` (PR #134612)

[Jack Styles via cfe-commits]

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@@ -463,6 +466,7 @@ X86 Support
 
 Arm and AArch64 Support
 ^^^^^^^^^^^^^^^^^^^^^^^
+- For ARM targets, cc1as now considers the FPU's features for the selected CPU or Arch.
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Stylie777 wrote:

Done

https://github.com/llvm/llvm-project/pull/134612