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| author | Paolo Bonzini <pbonzini@redhat.com> | 2024-05-31 10:37:06 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-06-05 11:01:05 +0200 |
| commit | 294ac64e459aca023f43441651d860980c9784f1 (patch) | |
| tree | 29ffccc60f2d63c287e11eb6841b2c4be9b7704b | |
| parent | 72baef13b9dce71f20ae840d9951e559e14abf6d (diff) | |
meson: assume x86-64-v2 baseline ISA
x86-64-v2 processors were released in 2008, assume that we have one.
Unfortunately there is no GCC flag to enable all the features
without disabling what came after; so enable them one by one.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | meson.build | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/meson.build b/meson.build index 6386607144..d80203f1cd 100644 --- a/meson.build +++ b/meson.build @@ -336,9 +336,13 @@ if host_arch == 'i386' and not cc.links(''' qemu_common_flags = ['-march=i486'] + qemu_common_flags endif -# ??? Only extremely old AMD cpus do not have cmpxchg16b. -# If we truly care, we should simply detect this case at -# runtime and generate the fallback to serial emulation. +# Assume x86-64-v2 (minus CMPXCHG16B for 32-bit code) +if host_arch == 'i386' + qemu_common_flags = ['-mfpmath=sse'] + qemu_common_flags +endif +if host_arch in ['i386', 'x86_64'] + qemu_common_flags = ['-mpopcnt', '-msse4.2'] + qemu_common_flags +endif if host_arch == 'x86_64' qemu_common_flags = ['-mcx16'] + qemu_common_flags endif |