[clang] [llvm] [RISCV][clang] Support XSfmm ABI attributes (PR #206260)

[Craig Topper via cfe-commits]

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@@ -0,0 +1,92 @@
+//======-- RISCVStateCheck.cpp - Helper for checking RISC-V attributes -======//
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topperc wrote:

Can do the check in `RISCVTargetLowering::LowerCall` and the equivalent in GlobalISel?

https://github.com/llvm/llvm-project/pull/206260