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Reenable AVX/AVX2 for x86 Macs when building universal binaries.

pull/37/head
Mooneer Salem 2020-11-19 22:10:46 -08:00
parent 6facf74c25
commit 0209ce6f21
1 changed files with 14 additions and 6 deletions
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20
CMakeLists.txt
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@ -97,12 +97,20 @@ if(NOT DISABLE_CPU_OPTIMIZATION)
execute_process(COMMAND grep -c "neon" /proc/cpuinfo
OUTPUT_VARIABLE NEON)
elseif(APPLE)
# Under OSX we need to look through a few sysctl entries to determine what our CPU supports.
message(STATUS "Looking for available CPU optimizations on an OSX system...")
execute_process(COMMAND sysctl -a COMMAND grep machdep.cpu.leaf7_features COMMAND grep -c AVX2
OUTPUT_VARIABLE AVX2)
execute_process(COMMAND sysctl -a COMMAND grep machdep.cpu.features COMMAND grep -c AVX
OUTPUT_VARIABLE AVX)
if(BUILD_OSX_UNIVERSAL)
# Presume AVX/AVX2 are enabled on the x86 side. The ARM side will auto-enable
# NEON optimizations by virtue of being aarch64.
set(AVX TRUE)
set(AVX2 TRUE)
set(SSE TRUE)
else()
# Under OSX we need to look through a few sysctl entries to determine what our CPU supports.
message(STATUS "Looking for available CPU optimizations on an OSX system...")
execute_process(COMMAND sysctl -a COMMAND grep machdep.cpu.leaf7_features COMMAND grep -c AVX2
OUTPUT_VARIABLE AVX2)
execute_process(COMMAND sysctl -a COMMAND grep machdep.cpu.features COMMAND grep -c AVX
OUTPUT_VARIABLE AVX)
endif(BUILD_OSX_UNIVERSAL)
elseif(WIN32)
message(STATUS "No detection capability on Windows, assuming AVX is available.")
set(AVX TRUE)