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all: Replace if (ARCH_FOO) checks by #if ARCH_FOO

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This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html

This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2022-06-12 05:51:12 +02:00
parent e5f6707a7b
commit 40e6575aa3
131 changed files with 738 additions and 567 deletions
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5
libavfilter/af_volume.c
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@@ -238,8 +238,9 @@ static av_cold void volume_init(VolumeContext *vol)
break;
}
if (ARCH_X86)
ff_volume_init_x86(vol);
#if ARCH_X86
ff_volume_init_x86(vol);
#endif
}
static int set_volume(AVFilterContext *ctx)