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| author | Brett Cannon <brett@python.org> | 2024-11-06 22:33:46 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-11-06 22:33:46 (GMT) |
| commit | 2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3 (patch) | |
| tree | 36ac3fc5cb589b589cac2c8780a248d27c690ebd /configure.ac | |
| parent | 5dc36dc5658f6ba9cfd9d7a2771baaf17d2ee23a (diff) | |
| download | cpython-2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3.zip cpython-2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3.tar.gz cpython-2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3.tar.bz2 | |
GH-126458: disable SIMD for HACL under WASI (#126512)
Requires an extra `-msimd128` flag and the `*mmintrin.h` header files are exclusive to x86-family CPUs.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index bc67a05..da7d1ef 100644 --- a/configure.ac +++ b/configure.ac @@ -7853,7 +7853,8 @@ AC_SUBST([LIBHACL_CFLAGS]) # The SIMD files use aligned_alloc, which is not available on older versions of # Android. -if test "$ac_sys_system" != "Linux-android" || test "$ANDROID_API_LEVEL" -ge 28; then +# The *mmintrin.h headers are x86-family-specific, so can't be used on WASI. +if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || test "$ANDROID_API_LEVEL" -ge 28; then dnl This can be extended here to detect e.g. Power8, which HACL* should also support. AX_CHECK_COMPILE_FLAG([-msse -msse2 -msse3 -msse4.1 -msse4.2],[ [LIBHACL_SIMD128_FLAGS="-msse -msse2 -msse3 -msse4.1 -msse4.2"] @@ -7879,11 +7880,12 @@ AC_SUBST([LIBHACL_SIMD128_OBJS]) # The SIMD files use aligned_alloc, which is not available on older versions of # Android. +# The *mmintrin.h headers are x86-family-specific, so can't be used on WASI. # # Although AVX support is not guaranteed on Android # (https://developer.android.com/ndk/guides/abis#86-64), this is safe because we do a # runtime CPUID check. -if test "$ac_sys_system" != "Linux-android" || test "$ANDROID_API_LEVEL" -ge 28; then +if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || test "$ANDROID_API_LEVEL" -ge 28; then AX_CHECK_COMPILE_FLAG([-mavx2],[ [LIBHACL_SIMD256_FLAGS="-mavx2"] AC_DEFINE([HACL_CAN_COMPILE_SIMD256], [1], [HACL* library can compile SIMD256 implementations]) |