[llvm-dev] [proposal] change default ABI for special riscv arch

[Ben Shi via llvm-dev]

Hello,


In the clang's riscv driver,
https://github.com/llvm/llvm-project/blob/main/clang/lib/Driver/ToolChains/Arch/RISCV.cpp


the default abi is fomulated according to arch if no explicit -mabi is specified.


Is it possible to set the default abi to ilp32f for -march=rv32imacf. For my exployer's chip, HW F is used while SW D is used. Each time I have to write "-march=rv32imacf -mabi=ilp32f“， can it be simplified to only "-march=imacf" ? Just adding a line is enough.


if (MArch.substr(4).contains_lower("f") && !MArch.substr(4).contains_lower("d"))
return "ilp32f";


Can I submit a patch to fix it?


Ben

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