gcc/gcc44-atom-mnative.patch

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2009-06-09 14:26:59 +00:00
2009-05-20 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/driver-i386.c (host_detect_local_cpu): Check
extended family and model for Intel processors. Support Intel
Atom.
--- gcc/config/i386/driver-i386.c (revision 147735)
+++ gcc/config/i386/driver-i386.c (revision 147736)
@@ -395,9 +395,22 @@ const char *host_detect_local_cpu (int a
__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;
@@ -496,8 +509,8 @@ const char *host_detect_local_cpu (int a
break;
case PROCESSOR_PENTIUMPRO:
if (has_longmode)
- /* It is Core 2 Duo. */
- cpu = "core2";
+ /* It is Core 2 or Atom. */
+ cpu = (model == 28) ? "atom" : "core2";
else if (arch)
{
if (has_sse3)