Support -march=gracemont

Alderlake-N is E-core only, add it as an alias of Alderlake.

gcc/ChangeLog:

	* common/config/i386/cpuinfo.h (get_intel_cpu): Detect
	Alderlake-N.
	* common/config/i386/i386-common.cc (alias_table): Support
	-march=gracemont as an alias of -march=alderlake.

diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index f49bc79ed7b57a2638228d4491c266590ddc1b24..1652411d6c470a6888fcd8ffee3179e3dfca6e9a 100644 (file)
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -533,6 +533,9 @@ get_intel_cpu (struct __processor_model *cpu_model,
       cpu_model->__cpu_type = INTEL_COREI7;
       cpu_model->__cpu_subtype = INTEL_COREI7_TIGERLAKE;
       break;
+
+    case 0xbe:
+      /* Alder Lake N, E-core only.  */
     case 0x97:
     case 0x9a:
       /* Alder Lake.  */

diff --git a/gcc/common/config/i386/i386-common.cc b/gcc/common/config/i386/i386-common.cc
index db88befc9b820ba4075751013e91d71aa7f49869..12a01704a73d06ff33e5582c497c407de4d16c29 100644 (file)
--- a/gcc/common/config/i386/i386-common.cc
+++ b/gcc/common/config/i386/i386-common.cc
@@ -2301,6 +2301,8 @@ const pta processor_alias_table[] =
     M_CPU_TYPE (INTEL_GOLDMONT_PLUS), P_PROC_SSE4_2},
   {"tremont", PROCESSOR_TREMONT, CPU_HASWELL, PTA_TREMONT,
     M_CPU_TYPE (INTEL_TREMONT), P_PROC_SSE4_2},
+  {"gracemont", PROCESSOR_ALDERLAKE, CPU_HASWELL, PTA_ALDERLAKE,
+   M_CPU_SUBTYPE (INTEL_COREI7_ALDERLAKE), P_PROC_AVX2},
   {"sierraforest", PROCESSOR_SIERRAFOREST, CPU_HASWELL, PTA_SIERRAFOREST,
     M_CPU_SUBTYPE (INTEL_SIERRAFOREST), P_PROC_AVX2},
   {"grandridge", PROCESSOR_GRANDRIDGE, CPU_HASWELL, PTA_GRANDRIDGE,