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simplified avx detection on Linux

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This commit is contained in:
Ilan Schnell 2013-01-16 19:56:42 -06:00
commit 0f3dfb85d4
1 changed files with 5 additions and 7 deletions
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12
llvm/ee.py
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@ -56,14 +56,12 @@ def _detect_avx_support():
return True # force disable AVX return True # force disable AVX
# auto-detect avx # auto-detect avx
try: try:
lines = open('/proc/cpuinfo').read().splitlines() for line in open('/proc/cpuinfo'):
if line.lstrip().startswith('flags') and 'avx' in line.split():
# enable AVX if flags contain AVX
return False
except IOError: except IOError:
return True # disable AVX if no /proc/cpuinfo is found pass # disable AVX if no /proc/cpuinfo is found
flags = [l for l in lines if l.lstrip().startswith('flags')]
if not flags:
return True # disable AVX if flags are empty
if 'avx' in flags[0]:
return False # enable AVX if flags contain AVX
return True # disable AVX if flags does not have AVX return True # disable AVX if flags does not have AVX
FORCE_DISABLE_AVX = _detect_avx_support() FORCE_DISABLE_AVX = _detect_avx_support()