llvm-project

20b5728b - [RISCV] Implement the implications of C extension (#132259)

[RISCV] Implement the implications of C extension (#132259) Implement the following implications according to the [Zc spec](https://github.com/riscvarchive/riscv-code-size-reduction/blob/main/Zc-specification/Zc.adoc#13-c) > As C defines the same instructions as Zca, Zcf and Zcd, the rule is that: > * C always implies Zca > * C+F implies Zcf (RV32 only) > * C+D implies Zcd