linux-kernel - Re: [PATCH] riscv: eliminate unreliable __builtin_frame

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Message-ID: <8735lj78wu.fsf@igel.home>
Date:   Wed, 19 Jan 2022 21:44:17 +0100
From:   Andreas Schwab <schwab@...ux-m68k.org>
To:     Jessica Clarke <jrtc27@...c27.com>
Cc:     Changbin Du <changbin.du@...il.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] riscv: eliminate unreliable __builtin_frame_address(1)

On Jan 19 2022, Jessica Clarke wrote:

> Leaf functions by definition don’t have callees that are trying to read
> their frame pointer so aren’t relevant here.

??? __builtin_frame_address(1) is about the caller, not the callee.

-- 
Andreas Schwab, schwab@...ux-m68k.org
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