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

[Yeting Kuo via llvm-commits]

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@@ -324,8 +340,7 @@ bool RISCVMakeCompressibleOpt::runOnMachineFunction(MachineFunction &Fn) {
   const RISCVInstrInfo &TII = *STI.getInstrInfo();
 
   // This optimization only makes sense if compressed instructions are emitted.
-  // FIXME: Support Zca, Zcf, Zcd granularity.
-  if (!STI.hasStdExtC())
+  if (!STI.hasStdExtZca() && !STI.hasStdExtCOrZcfOrZce() && !STI.hasStdExtZcd())
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yetingk wrote:

I think you are right.

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