[PATCH] D129824: [RISCV] Set triple based on -march flag which can be deduced in more generic way

[Zixuan Wu via Phabricator via cfe-commits]

zixuan-wu added a comment.

In D129824#3653895 <https://reviews.llvm.org/D129824#3653895>, @jrtc27 wrote:

> Does GCC allow this or not? Because this strikes me as a bad idea at first sight…

GCC can deduce from -mcpu but not -mabi.

> riscv64-unknown-linux-gnu-gcc a.c -mabi=ilp32
> cc1: error: ABI requires '-march=rv32'

But I think it can be negotiated.


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