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SubjectRe: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64
On Wed, Jan 13, 2021 at 1:44 PM Russell King - ARM Linux admin
<> wrote:
> So, maybe the Sparc issue was just a similar but different bug in gcc
> 4.9.x.

Good catch. And I know this bug has happened independently on
different architectures several times (I remember this on x86-64 as
well), so I started looking around.

And in fact, 4.9 was buggy on x86-64 too:

And yeah, _that_ gcc bug wasn't actually x86-64 specific, but
apparently a generic instruction scheduling bug.

So it's an independent bug, but I do have to admit that the arguments
against 4.9 are piling up (even if that particular fix apparently got
fixed in the gcc branches and apparently backported to distro
compilers too).


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