Module: Mesa Branch: main Commit: 2d042066735bad4c1842502f233695ef3340f573 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d042066735bad4c1842502f233695ef3340f573
Author: Jesse Natalie <[email protected]> Date: Fri Jun 3 07:38:40 2022 -0700 meson: Enable SSE4.1 for MSVC Modern MSVC always supports compiling with the SSE4.1 intrinsics with no additional command line options, but doesn't have any options for auto-vectorizing into SSE4.1. Reviewed-by: Erik Faye-Lund <[email protected]> Reviewed-by: Yonggang Luo <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16840> --- meson.build | 50 ++++++++++++++++++++++++++------------------------ 1 file changed, 26 insertions(+), 24 deletions(-) diff --git a/meson.build b/meson.build index 77cbe5efef6..7f62618e8f2 100644 --- a/meson.build +++ b/meson.build @@ -1260,34 +1260,36 @@ if host_machine.system() == 'windows' endif endif -if host_machine.cpu_family().startswith('x86') and cc.get_argument_syntax() != 'msvc' +sse41_args = [] +with_sse41 = false +if host_machine.cpu_family().startswith('x86') pre_args += '-DUSE_SSE41' with_sse41 = true - sse41_args = ['-msse4.1'] - - if host_machine.cpu_family() == 'x86' - if get_option('sse2') - # These settings make generated GCC code match MSVC and follow - # GCC advice on https://gcc.gnu.org/wiki/FloatingPointMath#x86note - # - # NOTE: We need to ensure stack is realigned given that we - # produce shared objects, and have no control over the stack - # alignment policy of the application. Therefore we need - # -mstackrealign or -mincoming-stack-boundary=2. - # - # XXX: We could have SSE without -mstackrealign if we always used - # __attribute__((force_align_arg_pointer)), but that's not - # always the case. - c_args += ['-msse2', '-mfpmath=sse', '-mstackrealign'] - else - # GCC on x86 (not x86_64) with -msse* assumes a 16 byte aligned stack, but - # that's not guaranteed - sse41_args += '-mstackrealign' + + if cc.get_id() != 'msvc' + sse41_args = ['-msse4.1'] + + if host_machine.cpu_family() == 'x86' + if get_option('sse2') + # These settings make generated GCC code match MSVC and follow + # GCC advice on https://gcc.gnu.org/wiki/FloatingPointMath#x86note + # + # NOTE: We need to ensure stack is realigned given that we + # produce shared objects, and have no control over the stack + # alignment policy of the application. Therefore we need + # -mstackrealign or -mincoming-stack-boundary=2. + # + # XXX: We could have SSE without -mstackrealign if we always used + # __attribute__((force_align_arg_pointer)), but that's not + # always the case. + c_args += ['-msse2', '-mfpmath=sse', '-mstackrealign'] + else + # GCC on x86 (not x86_64) with -msse* assumes a 16 byte aligned stack, but + # that's not guaranteed + sse41_args += '-mstackrealign' + endif endif endif -else - with_sse41 = false - sse41_args = [] endif # Check for GCC style atomics
