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Add -O2 to flang flags when building on WoA in Release mode #5128

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Merged
merged 1 commit into from
Feb 12, 2025
Merged

Add -O2 to flang flags when building on WoA in Release mode #5128

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21 changes: 13 additions & 8 deletions cmake/system.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -628,6 +628,18 @@ set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${CCOMMON_OPT}")
endif()
# TODO: not sure what PFLAGS is -hpa
set(PFLAGS "${PFLAGS} ${CCOMMON_OPT} -I${TOPDIR} -DPROFILE ${COMMON_PROF}")
if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")

if ("${F_COMPILER}" STREQUAL "FLANG")
if (${CMAKE_Fortran_COMPILER_VERSION} VERSION_LESS_EQUAL 3)
set(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} -fno-unroll-loops")
endif ()
endif ()
if (ARM64 AND CMAKE_Fortran_COMPILER_ID MATCHES "LLVMFlang.*" AND CMAKE_SYSTEM_NAME STREQUAL "Windows")
set(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} -O2")
endif ()
endif ()


set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${FCOMMON_OPT}")
# TODO: not sure what FPFLAGS is -hpa
Expand All @@ -653,7 +665,7 @@ if (CMAKE_Fortran_COMPILER)
if ("${F_COMPILER}" STREQUAL "NAGFOR" OR "${F_COMPILER}" STREQUAL "CRAY" OR CMAKE_Fortran_COMPILER_ID MATCHES "LLVMFlang.*")
set(FILTER_FLAGS "-msse3;-mssse3;-msse4.1;-mavx;-mavx2,-mskylake-avx512")
if (CMAKE_Fortran_COMPILER_ID MATCHES "LLVMFlang.*")
message(STATUS "removing fortran flags")
message(STATUS "removing fortran flags not supported by the compiler")
set(FILTER_FLAGS "${FILTER_FLAGS};-m32;-m64")
endif ()
foreach (FILTER_FLAG ${FILTER_FLAGS})
Expand Down Expand Up @@ -684,13 +696,6 @@ if (${CMAKE_C_COMPILER_ID} MATCHES "IntelLLVM" AND ${CMAKE_SYSTEM_NAME} STREQUAL
set(LAPACK_CFLAGS "${LAPACK_CFLAGS} -DNOCHANGE")
endif ()

if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
if ("${F_COMPILER}" STREQUAL "FLANG")
if (${CMAKE_Fortran_COMPILER_VERSION} VERSION_LESS_EQUAL 3)
set(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} -fno-unroll-loops")
endif ()
endif ()
endif ()

if (NOT DEFINED SUFFIX)
set(SUFFIX o)
Expand Down
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