[llvm-branch-commits] [RISCV] Generate profiles from RISCVProfiles.td (PR #90187)

[Pengcheng Wang via llvm-branch-commits]

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@@ -51,6 +51,14 @@ def Feature64Bit
 def FeatureDummy
     : SubtargetFeature<"dummy", "Dummy", "true", "Dummy">;
 
+class RISCVProfile<string name, list<SubtargetFeature> features>
+    : SubtargetFeature<name, "RISCVProfile", NAME,
+                       "RISC-V " # name # " profile", features>;
+
+def RVI20U32 : RISCVProfile<"rvi20u32", [Feature32Bit, FeatureStdExtI]>;
+def RVI20U64 : RISCVProfile<"rvi20u64", [Feature64Bit, FeatureStdExtI]>;
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wangpc-pp wrote:

We don't handle implications in TableGen, it is in `RISCVISAInfo` where we parse the march string. But yeah, I added `F` which implies `Zicsr`.

https://github.com/llvm/llvm-project/pull/90187