llvm-project

b64e4837 - [RISCV][TableGen] Generate RISCVTargetParserDef.inc from the new RISCVExtension tblgen information. (#89335)

[RISCV][TableGen] Generate RISCVTargetParserDef.inc from the new RISCVExtension tblgen information. (#89335) Instead of using RISCVISAInfo's extension information, use the extension found in tblgen after #89326. We still need to use RISCVISAInfo code to get the sorting rules for the ISA string. The ISA string we generate now is not quite the same extension we had before. No implied extensions are included in the generate string unless they are explicitly listed in RISCVProcessors.td. This primarily affects Zicsr being implied by F, V implying Zve*, and Zvl*b implying a smaller Zvl*b. All of these implication should be picked up when the string is used by the frontend. The benefit is that we get a more manageable ISA string for humans to deal with. This is a step towards generating RISCVISAInfo's extension list from tblgen.