[llvm] [RISCV] Don't use x7 as input argument for fastcc when Zicfilp enabled. (PR #93321)

[Yeting Kuo via llvm-commits]

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@@ -18415,10 +18416,18 @@ static ArrayRef<MCPhysReg> getFastCCArgGPRs(const RISCVABI::ABI ABI) {
                                           RISCV::X13, RISCV::X14, RISCV::X15,
                                           RISCV::X7};
 
+  // Zicfilp needs needs x7(t2) as the landing pad label register.
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yetingk wrote:

I will do some test in sifive internal.

https://github.com/llvm/llvm-project/pull/93321