+2010-05-09 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/44046
+ * config/i386/driver-i386.c (host_detect_local_cpu): Properly
+ detect Atom, Core 2 and Core i7.
+
2010-05-09 Richard Guenther <rguenther@suse.de>
* gcc.c (store_arg): Handle temporary file deletion for
cpu = "pentium";
break;
case PROCESSOR_PENTIUMPRO:
- if (model == 28)
- cpu = "atom";
- else if (model >= 28 && l2sizekb < 2048)
- /* Assume it's a small core if there's less than 2MB cache */
- cpu = "atom";
- else if (has_longmode)
- cpu = "core2";
- else if (arch)
+ switch (model)
{
- if (has_sse3)
- /* It is Core Duo. */
- cpu = "pentium-m";
- else if (has_sse2)
- /* It is Pentium M. */
- cpu = "pentium-m";
- else if (has_sse)
- /* It is Pentium III. */
- cpu = "pentium3";
- else if (has_mmx)
- /* It is Pentium II. */
- cpu = "pentium2";
+ case 0x1c:
+ case 0x26:
+ /* Atom. */
+ cpu = "atom";
+ break;
+ case 0x1a:
+ case 0x1e:
+ case 0x1f:
+ case 0x2e:
+ /* FIXME: Optimize for Nehalem. */
+ cpu = "core2";
+ break;
+ case 0x25:
+ case 0x2f:
+ /* FIXME: Optimize for Westmere. */
+ cpu = "core2";
+ break;
+ case 0x17:
+ case 0x1d:
+ /* Penryn. FIXME: -mtune=core2 is slower than -mtune=generic */
+ cpu = "core2";
+ break;
+ case 0x0f:
+ /* Merom. FIXME: -mtune=core2 is slower than -mtune=generic */
+ cpu = "core2";
+ break;
+ default:
+ if (arch)
+ {
+ if (has_ssse3)
+ /* If it is an unknown CPU with SSSE3, assume Core 2. */
+ cpu = "core2";
+ else if (has_sse3)
+ /* It is Core Duo. */
+ cpu = "pentium-m";
+ else if (has_sse2)
+ /* It is Pentium M. */
+ cpu = "pentium-m";
+ else if (has_sse)
+ /* It is Pentium III. */
+ cpu = "pentium3";
+ else if (has_mmx)
+ /* It is Pentium II. */
+ cpu = "pentium2";
+ else
+ /* Default to Pentium Pro. */
+ cpu = "pentiumpro";
+ }
else
- /* Default to Pentium Pro. */
- cpu = "pentiumpro";
+ /* For -mtune, we default to -mtune=generic. */
+ cpu = "generic";
+ break;
}
- else
- /* For -mtune, we default to -mtune=generic. */
- cpu = "generic";
break;
case PROCESSOR_PENTIUM4:
if (has_sse3)