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Re: [PATCH] riscv: adjust -march flags for binutils 2.38

From: Daniel Kiper
Subject: Re: [PATCH] riscv: adjust -march flags for binutils 2.38
Date: Fri, 4 Feb 2022 15:43:06 +0100
User-agent: NeoMutt/20170113 (1.7.2)

On Sat, Jan 29, 2022 at 01:36:55PM +0100, Heinrich Schuchardt wrote:
> As of version 2.38 binutils defaults to ISA specification version
> 2019-12-13. This version of the specification has has separated the
> the csr read/write (csrr*/csrw*) instructions and the fence.i from
> the I extension and put them into separate Zicsr and Zifencei
> extensions.
> This implies that we have to adjust the -march flag passed to the
> compiler accordingly.
> Signed-off-by: Heinrich Schuchardt <>

Reviewed-by: Daniel Kiper <>


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