i386: Change Diamond Rapids feature detect when model number could not be distinguished

We will use AMX-FP8 for DMR since it is a smaller and more unique feature.

gcc/ChangeLog:

	* config/i386/driver-i386.cc (host_detect_local_cpu): Change
	to AMX-FP8 for Diamond Rapids.

diff --git a/gcc/config/i386/driver-i386.cc b/gcc/config/i386/driver-i386.cc
index 63c7d79326d141a44eb6ff02db1c32054f852ebb..fe71f550075e96c1fedfd6ecd9b23e106ab4fdbe 100644 (file)
--- a/gcc/config/i386/driver-i386.cc
+++ b/gcc/config/i386/driver-i386.cc
@@ -600,7 +600,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
              if (has_feature (FEATURE_AVX512F))
                {
                  /* Assume Diamond Rapids.  */
              if (has_feature (FEATURE_AVX512F))
                {
                  /* Assume Diamond Rapids.  */

-                 if (has_feature (FEATURE_AMX_TRANSPOSE))
+                 if (has_feature (FEATURE_AMX_FP8))

                    cpu = "diamondrapids";
                  /* Assume Granite Rapids D.  */
                  else if (has_feature (FEATURE_AMX_COMPLEX))
                    cpu = "diamondrapids";
                  /* Assume Granite Rapids D.  */
                  else if (has_feature (FEATURE_AMX_COMPLEX))