diff options
Diffstat (limited to 'gcc-4.4.3/gcc/config/i386/driver-i386.c')
| -rw-r--r-- | gcc-4.4.3/gcc/config/i386/driver-i386.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/gcc-4.4.3/gcc/config/i386/driver-i386.c b/gcc-4.4.3/gcc/config/i386/driver-i386.c index 9aa33d27c..c506b2bc3 100644 --- a/gcc-4.4.3/gcc/config/i386/driver-i386.c +++ b/gcc-4.4.3/gcc/config/i386/driver-i386.c @@ -378,6 +378,7 @@ const char *host_detect_local_cpu (int argc, const char **argv) /* Extended features */ unsigned int has_lahf_lm = 0, has_sse4a = 0; unsigned int has_longmode = 0, has_3dnowp = 0, has_3dnow = 0; + unsigned int has_movbe = 0; unsigned int has_sse4_1 = 0, has_sse4_2 = 0; unsigned int has_popcnt = 0, has_aes = 0, has_avx = 0; unsigned int has_pclmul = 0; @@ -398,9 +399,22 @@ const char *host_detect_local_cpu (int argc, const char **argv) __cpuid (1, eax, ebx, ecx, edx); - /* We don't care for extended family. */ model = (eax >> 4) & 0x0f; family = (eax >> 8) & 0x0f; + if (vendor == SIG_INTEL) + { + unsigned int extended_model, extended_family; + + extended_model = (eax >> 12) & 0xf0; + extended_family = (eax >> 20) & 0xff; + if (family == 0x0f) + { + family += extended_family; + model += extended_model; + } + else if (family == 0x06) + model += extended_model; + } has_sse3 = ecx & bit_SSE3; has_ssse3 = ecx & bit_SSSE3; @@ -408,6 +422,7 @@ const char *host_detect_local_cpu (int argc, const char **argv) has_sse4_2 = ecx & bit_SSE4_2; has_avx = ecx & bit_AVX; has_cmpxchg16b = ecx & bit_CMPXCHG16B; + has_movbe = ecx & bit_MOVBE; has_popcnt = ecx & bit_POPCNT; has_aes = ecx & bit_AES; has_pclmul = ecx & bit_PCLMUL; @@ -505,8 +520,8 @@ const char *host_detect_local_cpu (int argc, const char **argv) break; case PROCESSOR_PENTIUMPRO: if (has_longmode) - /* It is Core 2 Duo. */ - cpu = "core2"; + /* It is Core 2 or Atom. */ + cpu = (model == 28 || model == 38) ? "atom" : "core2"; else if (arch) { if (has_sse3) @@ -597,6 +612,8 @@ const char *host_detect_local_cpu (int argc, const char **argv) options = concat (options, "-mcx16 ", NULL); if (has_lahf_lm) options = concat (options, "-msahf ", NULL); + if (has_movbe) + options = concat (options, "-mmovbe", NULL); if (has_aes) options = concat (options, "-maes ", NULL); if (has_pclmul) |