diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 74 |
1 files changed, 66 insertions, 8 deletions
diff --git a/configure b/configure index 963fbbcf1e7..86ffccb1ee1 100755 --- a/configure +++ b/configure @@ -18047,6 +18047,47 @@ fi fi +# Check for LoongArch CRC intrinsics to do CRC calculations. +# +# Check if __builtin_loongarch_crcc_* intrinsics can be used +# with the default compiler flags. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_loongarch_crcc_w_b_w, __builtin_loongarch_crcc_w_h_w, __builtin_loongarch_crcc_w_w_w and __builtin_loongarch_crcc_w_d_w" >&5 +$as_echo_n "checking for __builtin_loongarch_crcc_w_b_w, __builtin_loongarch_crcc_w_h_w, __builtin_loongarch_crcc_w_w_w and __builtin_loongarch_crcc_w_d_w... " >&6; } +if ${pgac_cv_loongarch_crc32c_intrinsics+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +unsigned int crc = 0; + crc = __builtin_loongarch_crcc_w_b_w(0, crc); + crc = __builtin_loongarch_crcc_w_h_w(0, crc); + crc = __builtin_loongarch_crcc_w_w_w(0, crc); + crc = __builtin_loongarch_crcc_w_d_w(0, crc); + /* return computed value, to prevent the above being optimized away */ + return crc == 0; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + pgac_cv_loongarch_crc32c_intrinsics=yes +else + pgac_cv_loongarch_crc32c_intrinsics=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_loongarch_crc32c_intrinsics" >&5 +$as_echo "$pgac_cv_loongarch_crc32c_intrinsics" >&6; } +if test x"$pgac_cv_loongarch_crc32c_intrinsics" = x"yes"; then + pgac_loongarch_crc32c_intrinsics=yes +fi + + # Select CRC-32C implementation. @@ -18063,9 +18104,12 @@ fi # we're not targeting such a processor, but can nevertheless produce code that # uses the CRC instructions, compile both, and select at runtime. # -# You can override this logic by setting the appropriate USE_*_CRC32 flag to 1 +# You can skip the runtime check by setting the appropriate USE_*_CRC32 flag to 1 # in the template or configure command line. -if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_ARMV8_CRC32C" = x"" && test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x""; then +# +# If we are targeting a LoongArch processor, CRC instructions are +# always available (at least on 64 bit), so no runtime check is needed. +if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && test x"$USE_SSE42_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_ARMV8_CRC32C" = x"" && test x"$USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK" = x"" && test x"$USE_LOONGARCH_CRC32C" = x""; then # Use Intel SSE 4.2 if available. if test x"$pgac_sse42_crc32_intrinsics" = x"yes" && test x"$SSE4_2_TARGETED" = x"1" ; then USE_SSE42_CRC32C=1 @@ -18083,10 +18127,15 @@ if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1 else - # fall back to slicing-by-8 algorithm, which doesn't require any - # special CPU support. - USE_SLICING_BY_8_CRC32C=1 - fi + # LoongArch CRCC instructions. + if test x"$pgac_loongarch_crc32c_intrinsics" = x"yes"; then + USE_LOONGARCH_CRC32C=1 + else + # fall back to slicing-by-8 algorithm, which doesn't require any + # special CPU support. + USE_SLICING_BY_8_CRC32C=1 + fi + fi fi fi fi @@ -18127,12 +18176,21 @@ $as_echo "#define USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK 1" >>confdefs.h { $as_echo "$as_me:${as_lineno-$LINENO}: result: ARMv8 CRC instructions with runtime check" >&5 $as_echo "ARMv8 CRC instructions with runtime check" >&6; } else + if test x"$USE_LOONGARCH_CRC32C" = x"1"; then + +$as_echo "#define USE_LOONGARCH_CRC32C 1" >>confdefs.h + + PG_CRC32C_OBJS="pg_crc32c_loongarch.o" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: LoongArch CRCC instructions" >&5 +$as_echo "LoongArch CRCC instructions" >&6; } + else $as_echo "#define USE_SLICING_BY_8_CRC32C 1" >>confdefs.h - PG_CRC32C_OBJS="pg_crc32c_sb8.o" - { $as_echo "$as_me:${as_lineno-$LINENO}: result: slicing-by-8" >&5 + PG_CRC32C_OBJS="pg_crc32c_sb8.o" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: slicing-by-8" >&5 $as_echo "slicing-by-8" >&6; } + fi fi fi fi |