[clang] [llvm] [ARM] Save floating point registers and status registers with save_fp function attribute (PR #89654)

[Eli Friedman via cfe-commits]

================
@@ -5584,6 +5584,20 @@ static void handleAbiTagAttr(Sema &S, Decl *D, const 
ParsedAttr &AL) {
                  AbiTagAttr(S.Context, AL, Tags.data(), Tags.size()));
 }
 
+static void handleARMInterruptSaveFPAttr(Sema &S, Decl *D,
+                                         const ParsedAttr &AL) {
+  handleARMInterruptAttr(S, D, AL);
+
+  bool VFP = S.Context.getTargetInfo().hasFeature("vfp");
----------------
efriedma-quic wrote:

Do we care if someone uses a "target" attribute?  Maybe not relevant for 
embedded targets where you'd use this.

https://github.com/llvm/llvm-project/pull/89654
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