[llvm] [RISCV] Teach RISCVMakeCompressible handle Zca/Zcf/Zce/Zcd. (PR #81844)

[Alex Bradbury via llvm-commits]

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@@ -143,6 +143,10 @@ class RISCVSubtarget : public RISCVGenSubtargetInfo {
 #include "RISCVGenSubtargetInfo.inc"
 
   bool hasStdExtCOrZca() const { return HasStdExtC || HasStdExtZca; }
+  bool hasStdExtCOrZcd() const { return HasStdExtC || HasStdExtZcd; }
+  bool hasStdExtCOrZcfOrZce() const {
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asb wrote:

It would be better to define hasStdExtCOrZcf I think. In any case where the Zc* extensions are used, Zcf will always be defined if flw/fsw are supported (e.g. there's logic in RISCVISAInfo to add zcf if zce is specified alongside f).

https://github.com/llvm/llvm-project/pull/81844