This reverts commit 294ac64e459aca023f43441651d860980c9784f1.
Reinstate the ability to use Qemu on x86 hosts that do not meet
x86_64-v2 ISA baseline.
Signed-off-by: Alexander Monakov <amona...@ispras.ru>
---
meson.build | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/meson.build b/meson.build
index ec59effc..49962cce 100644
--- a/meson.build
+++ b/meson.build
@@ -336,13 +336,9 @@ if host_arch == 'i386' and not cc.links('''
qemu_common_flags = ['-march=i486'] + qemu_common_flags
endif
-# 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
+# ??? 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.
if host_arch == 'x86_64'
qemu_common_flags = ['-mcx16'] + qemu_common_flags
endif
--
2.32.0
