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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 574694c..e3051b7 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+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

diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index 256cb6a..7a7b357 100644 (file)
--- a/gcc/config/i386/driver-i386.c
+++ b/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)