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ricey? yes...but i've gone from 14-20% cpu use to 10-15% cpu use...TODO: document flto

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DarthArgus
2016-12-16 09:02:08 +00:00
parent a6cbda2a4d
commit 3f94f5b448
1 changed files with 6 additions and 3 deletions
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CMakeLists.txt
+6 -3
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@@ -70,7 +70,7 @@ elseif(UNIX)
find_package(Curses REQUIRED)
# linker flags
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,-O3,--sort-common,--as-needed,--relax,-z,combreloc,-z,global,--no-omagic")
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,-z,norelro,-O3,--sort-common,--as-needed,--relax,-z,combreloc,-z,global,--no-omagic")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
# don't put anything too crazy in debug...and any common flags go into CMAKE_CXX_FLAGS
@@ -81,7 +81,10 @@ elseif(UNIX)
# Ofast doesn't work with gcc builds
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast -fno-assume-sane-operator-new")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast -fno-assume-sane-operator-new \
-fno-signed-zeros -freciprocal-math -ffp-contract=fast \
-fno-threadsafe-statics -fslp-vectorize-aggressive -fslp-vectorize \
-fno-stack-protector -fstrict-enums -fstrict-vtable-pointers -funroll-loops")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -ggdb")
if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
@@ -89,7 +92,7 @@ elseif(UNIX)
endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
# O3 and Ofast include one or more flags that cause java to crash when using gcc6
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -fno-signed-zeros -freciprocal-math -ffp-contract=fast")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -fno-signed-zeros -freciprocal-math")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
endif()