Messages in this thread | | | Date | Sat, 24 Jun 2023 01:06:59 +0800 | Subject | Re: [PATCH 7/9] LoongArch: Tweak CFLAGS for Clang compatibility | From | WANG Xuerui <> |
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On 6/24/23 01:00, Xi Ruoyao wrote: > On Fri, 2023-06-23 at 21:43 +0800, WANG Xuerui wrote: > >> -cflags-y += -G0 -pipe -msoft-float > -msoft-float should not be removed. Our consensus (made when I was > developing https://gcc.gnu.org/r13-6500) is -mabi=lp64s does *not* > disable floating point instructions, but only disable FPRs for passing > arguments and return values. So w/o -msoft-float (or -mfpu=none) GCC is > allowed to generate FP instructions everywhere in kernel and it may > cause kernel FPD exception in the future. Hmm, now I remember (still vaguely) about the discussion... I'll have to check how to minimize churn around FPU-touching code though if -msoft-float is to be kept.
-- WANG "xen0n" Xuerui
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