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Bug 1371016 - aom: Add /arch:AVX2 when compiling under msvc. r=ted

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Propagate the libvpx AVX flag changes from bug 1279593.

This flag tells the compiler to generate AVX code
in these modules intead of using normal SSE instructions
which can trigger expensive state-switching.

NB: This should only be set for AVX-specific implementation
files; setting this flag for general code will invalidate
our runtime simd support checks.

MozReview-Commit-ID: 5BVeCTsNlup

--HG--
extra : rebase_source : 219b5912a220e960e45ec43a532f407fe18eb41b
This commit is contained in:
Ralph Giles 2017-06-07 12:34:31 -07:00
parent 97c2f0b514
commit 2ccddcb958
1 changed files with 7 additions and 0 deletions
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7
media/libaom/moz.build
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@ -98,6 +98,13 @@ if CONFIG['CLANG_CL'] or not CONFIG['_MSC_VER']:
elif f.endswith('avx2.c'):
SOURCES[f].flags += ['-mavx2']
if CONFIG['_MSC_VER'] and not config['CLANG_CL']:
for f in SOURCES:
if f.endswith('avx.c'):
SOURCES[f].flags += ['-arch:AVX']
if f.endswith('avx2.c'):
SOURCES[f].flags += ['-arch:AVX2']
# Suppress warnings in third-party code.
if CONFIG['GNU_CC'] or CONFIG['CLANG_CL']:
CFLAGS += [