On Sep 14 2021, Jakub Jelinek via Gcc-patches wrote:
> On Mon, Sep 13, 2021 at 03:08:01PM -0700, sunil.k.pandey via Gcc-patches
> wrote:
>> FAIL: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc (test for excess
>> errors)
>
> Apparently all C++ compilations with
> -m32 -march={i386,i486,i586,pentium,pentiumpro,lakemont,pentium4}
> FAIL with:
> <built-in>: warning: ‘--param constructive-interference-size=64’ is greater
> than ‘--param l1-cache-line-size=0’ [-Winterference-size]
> So, either the C++ FE should not warn if param_l1_cache_line_size is 0
> (treat it as a don't know value), or the backend shouldn't overwrite
> the default generic param value of 32 with 0 when
> ix86_tune_cost->prefetch_block
> is 0.
I'm also seeing this error during bootstrap on aarch64:
<built-in>: error: '--param constructive-interference-size=64' is greater than
'--param l1-cache-line-size=32' [-Werror=interference-size]
Andreas.
--
Andreas Schwab, sch...@linux-m68k.org
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