re PR target/45359 (poor -march=native choices for VIA C7 Esther processors)

	PR target/45359
	PR target/46396
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
	VIA/Centaur processors and determine their cache parameters
	using detect_caches_amd.


Co-Authored-By: Dzianis Kahanovich <mahatma@eu.by>

From-SVN: r198987

gcc/ChangeLog

+2013-05-16  Uros Bizjak  <ubizjak@gmail.com>
+	    Dzianis Kahanovich  <mahatma@eu.by>
+
+	PR target/45359
+	PR target/46396
+	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
+	VIA/Centaur processors and determine their cache parameters
+	using detect_caches_amd.
+
 2013-05-16  Teresa Johnson  <tejohnson@google.com>
 
 	* cfgrtl.c (verify_hot_cold_block_grouping): Return err.
@@ -111,7 +120,7 @@
 
 2013-05-15  Uros Bizjak  <ubizjak@gmail.com>
 
-	* config/i386/i386.c (iy86_option_override_internal): Update
+	* config/i386/i386.c (ix86_option_override_internal): Update
 	processor_alias_table for missing PTA_PRFCHW and PTA_FXSR flags.  Add
 	PTA_POPCNT to corei7 entry and remove PTA_SSE from athlon-4 entry.
 	Do not enable SSE prefetch on non-SSE 3dNow! targets.  Enable

gcc/config/i386/driver-i386.c

@@ -517,7 +517,8 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 
   if (!arch)
     {
-      if (vendor == signature_AMD_ebx)
+      if (vendor == signature_AMD_ebx
+	  || vendor == signature_CENTAUR_ebx)
 	cache = detect_caches_amd (ext_level);
       else if (vendor == signature_INTEL_ebx)
 	{
@@ -560,6 +561,32 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       else
 	processor = PROCESSOR_PENTIUM;
     }
+  else if (vendor == signature_CENTAUR_ebx)
+    {
+      if (arch)
+	{
+	  if (family == 6)
+	    {
+	      if (model > 9)
+		/* Use the default detection procedure.  */
+		processor = PROCESSOR_GENERIC32;
+	      else if (model == 9)
+		cpu = "c3-2";
+	      else if (model >= 6)
+		cpu = "c3";
+	      else
+		/* We have no idea.  */
+		processor = PROCESSOR_GENERIC32;
+	    }
+	  else if (has_3dnow)
+	    cpu = "winchip2";
+	  else if (has_mmx)
+	    cpu = "winchip2-c6";
+	  else
+	    /* We have no idea.  */
+	    processor = PROCESSOR_GENERIC32;
+	}
+    }
   else
     {
       switch (family)