From 6f6ea27d17e9bbc917b94ffea1c933755e736bdc Mon Sep 17 00:00:00 2001
From: mayshao <mayshao-oc@zhaoxin.com>
Date: Wed, 19 Jun 2024 16:03:25 +0200
Subject: i386: Zhaoxin shijidadao enablement

This patch enables -march/-mtune=shijidadao, costs and tunings are set
according to the characteristics of the processor.

gcc/ChangeLog:

	* common/config/i386/cpuinfo.h (get_zhaoxin_cpu): Recognize shijidadao.
	* common/config/i386/i386-common.cc: Add shijidadao.
	* common/config/i386/i386-cpuinfo.h (enum processor_subtypes):
	Add ZHAOXIN_FAM7H_SHIJIDADAO.
	* config.gcc: Add shijidadao.
	* config/i386/driver-i386.cc (host_detect_local_cpu):
	Let -march=native recognize shijidadao processors.
	* config/i386/i386-c.cc (ix86_target_macros_internal): Add shijidadao.
	* config/i386/i386-options.cc (m_ZHAOXIN): Add m_SHIJIDADAO.
	(m_SHIJIDADAO): New definition.
	* config/i386/i386.h (enum processor_type): Add PROCESSOR_SHIJIDADAO.
	* config/i386/x86-tune-costs.h (struct processor_costs):
	Add shijidadao_cost.
	* config/i386/x86-tune-sched.cc (ix86_issue_rate): Add shijidadao.
	(ix86_adjust_cost): Ditto.
	* config/i386/x86-tune.def (X86_TUNE_USE_GATHER_2PARTS): Add m_SHIJIDADAO.
	(X86_TUNE_USE_GATHER_4PARTS): Ditto.
	(X86_TUNE_USE_GATHER_8PARTS): Ditto.
	(X86_TUNE_AVOID_128FMA_CHAINS): Ditto.
	* doc/extend.texi: Add details about shijidadao.
	* doc/invoke.texi: Ditto.

gcc/testsuite/ChangeLog:

	* g++.target/i386/mv32.C: Handle new -march
	* gcc.target/i386/funcspec-56.inc: Ditto.
---
 gcc/common/config/i386/cpuinfo.h      | 8 +++++++-
 gcc/common/config/i386/i386-common.cc | 8 ++++++--
 gcc/common/config/i386/i386-cpuinfo.h | 1 +
 3 files changed, 14 insertions(+), 3 deletions(-)

(limited to 'gcc/common')

diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index 4610bf6..9360397 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -667,12 +667,18 @@ get_zhaoxin_cpu (struct __processor_model *cpu_model,
 	  reset_cpu_feature (cpu_model, cpu_features2, FEATURE_F16C);
 	  cpu_model->__cpu_subtype = ZHAOXIN_FAM7H_LUJIAZUI;
 	}
-     else if (model >= 0x5b)
+     else if (model == 0x5b)
 	{
 	  cpu = "yongfeng";
 	  CHECK___builtin_cpu_is ("yongfeng");
 	  cpu_model->__cpu_subtype = ZHAOXIN_FAM7H_YONGFENG;
 	}
+     else if (model >= 0x6b)
+	{
+	  cpu = "shijidadao";
+	  CHECK___builtin_cpu_is ("shijidadao");
+	  cpu_model->__cpu_subtype = ZHAOXIN_FAM7H_SHIJIDADAO;
+	}
       break;
     default:
       break;
diff --git a/gcc/common/config/i386/i386-common.cc b/gcc/common/config/i386/i386-common.cc
index 5d9c188..e38b1b2 100644
--- a/gcc/common/config/i386/i386-common.cc
+++ b/gcc/common/config/i386/i386-common.cc
@@ -2066,6 +2066,7 @@ const char *const processor_names[] =
   "intel",
   "lujiazui",
   "yongfeng",
+  "shijidadao",
   "geode",
   "k6",
   "athlon",
@@ -2271,10 +2272,13 @@ const pta processor_alias_table[] =
       | PTA_SSSE3 | PTA_SSE4_1 | PTA_FXSR, 0, P_NONE},
   {"lujiazui", PROCESSOR_LUJIAZUI, CPU_LUJIAZUI,
 	PTA_LUJIAZUI,
-	M_CPU_SUBTYPE (ZHAOXIN_FAM7H_LUJIAZUI), P_NONE},
+	M_CPU_SUBTYPE (ZHAOXIN_FAM7H_LUJIAZUI), P_PROC_BMI},
   {"yongfeng", PROCESSOR_YONGFENG, CPU_YONGFENG,
 	PTA_YONGFENG,
-	M_CPU_SUBTYPE (ZHAOXIN_FAM7H_YONGFENG), P_NONE},
+	M_CPU_SUBTYPE (ZHAOXIN_FAM7H_YONGFENG), P_PROC_AVX2},
+  {"shijidadao", PROCESSOR_SHIJIDADAO, CPU_YONGFENG,
+	PTA_YONGFENG,
+	M_CPU_SUBTYPE (ZHAOXIN_FAM7H_SHIJIDADAO), P_PROC_AVX2},
   {"k8", PROCESSOR_K8, CPU_K8,
     PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
       | PTA_SSE2 | PTA_NO_SAHF | PTA_FXSR, 0, P_NONE},
diff --git a/gcc/common/config/i386/i386-cpuinfo.h b/gcc/common/config/i386/i386-cpuinfo.h
index 3ec9e00..ccc6deb 100644
--- a/gcc/common/config/i386/i386-cpuinfo.h
+++ b/gcc/common/config/i386/i386-cpuinfo.h
@@ -104,6 +104,7 @@ enum processor_subtypes
   INTEL_COREI7_PANTHERLAKE,
   ZHAOXIN_FAM7H_YONGFENG,
   AMDFAM1AH_ZNVER5,
+  ZHAOXIN_FAM7H_SHIJIDADAO,
   CPU_SUBTYPE_MAX
 };
 
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