x86: Share _isa_names_table and use cpuinfo.h

Both driver-i386.c and libgcc use CPUID to detect the processor name
as well as available ISAs.  To detect the same processor or ISAs, the
same detection logic is duplicated in 2 places.  Sometimes only one place
was up to date or got it right.  Sometimes both places got it wrong.

1. Add common/config/i386/i386-isas.h to define _isa_names_table.
2. Use isa_names_table to auto-generate ISA command-line options.
3. Use isa_names_table to auto-generate __builtin_cpu_supports tests.
4. Use common/config/i386/cpuinfo.h to check available ISAs and detect
newer Intel processors in driver-i386.c and builtin_target.c.
5. Detection of AMD processors and older processors in driver-i386.c is
unchanged.

gcc/

	PR target/95843
	* common/config/i386/i386-isas.h: New file.  Extracted from
	gcc/config/i386/i386-builtins.c.
	(_isa_names_table): Add option.
	(ISA_NAMES_TABLE_START): New.
	(ISA_NAMES_TABLE_END): Likewise.
	(ISA_NAMES_TABLE_ENTRY): Likewise.
	(isa_names_table): Defined with ISA_NAMES_TABLE_START,
	ISA_NAMES_TABLE_END and ISA_NAMES_TABLE_ENTRY.  Add more ISAs
	from enum processor_features.
	* config/i386/driver-i386.c: Include
	"common/config/i386/cpuinfo.h" and
	"common/config/i386/i386-isas.h".
	(has_feature): New macro.
	(host_detect_local_cpu): Call cpu_indicator_init to get CPU
	features.  Use has_feature to detect processor features.  Call
	Call get_intel_cpu to get the newer Intel CPU name.  Use
	isa_names_table to generate command-line options.
	* config/i386/i386-builtins.c: Include
	"common/config/i386/i386-isas.h".
	(_arch_names_table): Removed.
	(isa_names_table): Likewise.

gcc/testsuite/

	PR target/95843
	* gcc.target/i386/builtin_target.c: Include <stdlib.h>,
	../../../common/config/i386/i386-cpuinfo.h and
	../../../common/config/i386/cpuinfo.h.
	(check_amd_cpu_model): Removed.
	(check_intel_cpu_model): Likewise,
	(CHECK___builtin_cpu_is): New.
	(gcc_assert): New.  Defined as assert.
	(gcc_unreachable): New.  Defined as abort.
	(inline): New.  Defined as empty.
	(ISA_NAMES_TABLE_START): Likewise.
	(ISA_NAMES_TABLE_END): Likewise.
	(ISA_NAMES_TABLE_ENTRY): New.
	(check_features): Include
	"../../../common/config/i386/i386-isas.h".
	(check_detailed): Call cpu_indicator_init.  Always call
	check_features.  Call get_amd_cpu instead of check_amd_cpu_model.
	Call get_intel_cpu instead of check_intel_cpu_model.

1 files changed, 163 insertions, 0 deletions

diff --git a/gcc/common/config/i386/i386-isas.h b/gcc/common/config/i386/i386-isas.h
new file mode 100644
index 00000000000..08c9dbecc76
--- /dev/null
+++ b/gcc/common/config/i386/i386-isas.h
@@ -0,0 +1,163 @@
+/* i386 ISA table.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* These are the target attribute strings for which a dispatcher is
+   available, from fold_builtin_cpu.  */
+struct _isa_names_table
+{
+  const char *const name;
+  const enum processor_features feature;
+  const enum feature_priority priority;
+  const char *const option;
+};
+
+/* NB: isa_names_table is shared by i386-builtins.c, driver-i386.c and
+   gcc.target/i386/builtin_target.c.  isa_names_table is a static const
+   array in i386-builtins.c and driver-i386.c.  But it is a list of
+   assert statements in gcc.target/i386/builtin_target.c.  */
+
+#ifndef ISA_NAMES_TABLE_START
+# define ISA_NAMES_TABLE_START \
+    static const struct _isa_names_table isa_names_table[] = {
+#endif
+
+#ifndef ISA_NAMES_TABLE_END
+# define ISA_NAMES_TABLE_END };
+#endif
+
+#ifndef ISA_NAMES_TABLE_ENTRY
+# define ISA_NAMES_TABLE_ENTRY(name, feature, priority, option)  \
+    {name, feature, priority, option},
+#endif
+
+ISA_NAMES_TABLE_START
+  ISA_NAMES_TABLE_ENTRY("cmov", FEATURE_CMOV, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("mmx", FEATURE_MMX, P_MMX, "-mmmx")
+  ISA_NAMES_TABLE_ENTRY("popcnt", FEATURE_POPCNT, P_POPCNT, "-mpopcnt")
+  ISA_NAMES_TABLE_ENTRY("sse", FEATURE_SSE, P_SSE, "-msse")
+  ISA_NAMES_TABLE_ENTRY("sse2", FEATURE_SSE2, P_SSE2, "-msse2")
+  ISA_NAMES_TABLE_ENTRY("sse3", FEATURE_SSE3, P_SSE3, "-msse3")
+  ISA_NAMES_TABLE_ENTRY("ssse3", FEATURE_SSSE3, P_SSSE3, "-mssse3")
+  ISA_NAMES_TABLE_ENTRY("sse4.1", FEATURE_SSE4_1, P_SSE4_1, "-msse4.1")
+  ISA_NAMES_TABLE_ENTRY("sse4.2", FEATURE_SSE4_2, P_SSE4_2, "-msse4.2")
+  ISA_NAMES_TABLE_ENTRY("avx", FEATURE_AVX, P_AVX, "-mavx")
+  ISA_NAMES_TABLE_ENTRY("avx2", FEATURE_AVX2, P_AVX2, "-mavx2")
+  ISA_NAMES_TABLE_ENTRY("sse4a", FEATURE_SSE4_A, P_SSE4_A, "-msse4a")
+  ISA_NAMES_TABLE_ENTRY("fma4", FEATURE_FMA4, P_FMA4, "-mfma4")
+  ISA_NAMES_TABLE_ENTRY("xop", FEATURE_XOP, P_XOP, "-mxop")
+  ISA_NAMES_TABLE_ENTRY("fma", FEATURE_FMA, P_FMA, "-mfma")
+  ISA_NAMES_TABLE_ENTRY("avx512f", FEATURE_AVX512F, P_AVX512F,
+			"-mavx512f")
+  ISA_NAMES_TABLE_ENTRY("bmi", FEATURE_BMI, P_BMI, "-mbmi")
+  ISA_NAMES_TABLE_ENTRY("bmi2", FEATURE_BMI2, P_BMI2, "-mbmi2")
+  ISA_NAMES_TABLE_ENTRY("aes", FEATURE_AES, P_AES, "-maes")
+  ISA_NAMES_TABLE_ENTRY("pclmul", FEATURE_PCLMUL, P_PCLMUL, "-mpclmul")
+  ISA_NAMES_TABLE_ENTRY("avx512vl", FEATURE_AVX512VL, P_NONE,
+			"-mavx512vl")
+  ISA_NAMES_TABLE_ENTRY("avx512bw", FEATURE_AVX512BW, P_NONE,
+			"-mavx512bw")
+  ISA_NAMES_TABLE_ENTRY("avx512dq", FEATURE_AVX512DQ, P_NONE,
+			"-mavx512dq")
+  ISA_NAMES_TABLE_ENTRY("avx512cd", FEATURE_AVX512CD, P_NONE,
+			"-mavx512cd")
+  ISA_NAMES_TABLE_ENTRY("avx512er", FEATURE_AVX512ER, P_NONE,
+			"-mavx512er")
+  ISA_NAMES_TABLE_ENTRY("avx512pf", FEATURE_AVX512PF, P_NONE,
+			"-mavx512pf")
+  ISA_NAMES_TABLE_ENTRY("avx512vbmi", FEATURE_AVX512VBMI, P_NONE,
+			"-mavx512vbmi")
+  ISA_NAMES_TABLE_ENTRY("avx512ifma", FEATURE_AVX512IFMA, P_NONE,
+			"-mavx512ifma")
+  ISA_NAMES_TABLE_ENTRY("avx5124vnniw", FEATURE_AVX5124VNNIW, P_NONE,
+			"-mavx5124vnniw")
+  ISA_NAMES_TABLE_ENTRY("avx5124fmaps", FEATURE_AVX5124FMAPS, P_NONE,
+			"-mavx5124fmaps")
+  ISA_NAMES_TABLE_ENTRY("avx512vpopcntdq", FEATURE_AVX512VPOPCNTDQ,
+			P_NONE, "-mavx512vpopcntdq")
+  ISA_NAMES_TABLE_ENTRY("avx512vbmi2", FEATURE_AVX512VBMI2, P_NONE,
+			"-mavx512vbmi2")
+  ISA_NAMES_TABLE_ENTRY("gfni", FEATURE_GFNI, P_NONE, "-mgfni")
+  ISA_NAMES_TABLE_ENTRY("vpclmulqdq", FEATURE_VPCLMULQDQ, P_NONE,
+			"-mvpclmulqdq")
+  ISA_NAMES_TABLE_ENTRY("avx512vnni", FEATURE_AVX512VNNI, P_NONE,
+			"-mavx512vnni")
+  ISA_NAMES_TABLE_ENTRY("avx512bitalg", FEATURE_AVX512BITALG, P_NONE,
+			"-mavx512bitalg")
+  ISA_NAMES_TABLE_ENTRY("avx512bf16", FEATURE_AVX512BF16, P_NONE,
+			"-mavx512bf16")
+  ISA_NAMES_TABLE_ENTRY("avx512vp2intersect", FEATURE_AVX512VP2INTERSECT,
+			P_NONE, "-mavx512vp2intersect")
+  ISA_NAMES_TABLE_ENTRY("3dnow", FEATURE_3DNOW, P_NONE, "-m3dnow")
+  ISA_NAMES_TABLE_ENTRY("3dnowp", FEATURE_3DNOWP, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("adx", FEATURE_ADX, P_NONE, "-madx")
+  ISA_NAMES_TABLE_ENTRY("abm", FEATURE_ABM, P_NONE, "-mabm")
+  ISA_NAMES_TABLE_ENTRY("cldemote", FEATURE_CLDEMOTE, P_NONE,
+			"-mcldemote")
+  ISA_NAMES_TABLE_ENTRY("clflushopt", FEATURE_CLFLUSHOPT, P_NONE,
+			"-mclflushopt")
+  ISA_NAMES_TABLE_ENTRY("clwb", FEATURE_CLWB, P_NONE, "-mclwb")
+  ISA_NAMES_TABLE_ENTRY("clzero", FEATURE_CLZERO, P_NONE, "-mclzero")
+  ISA_NAMES_TABLE_ENTRY("cmpxchg16b", FEATURE_CMPXCHG16B, P_NONE,
+			"-mcx16")
+  ISA_NAMES_TABLE_ENTRY("cmpxchg8b", FEATURE_CMPXCHG8B, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("enqcmd", FEATURE_ENQCMD, P_NONE, "-menqcmd")
+  ISA_NAMES_TABLE_ENTRY("f16c", FEATURE_F16C, P_NONE, "-mf16c")
+  ISA_NAMES_TABLE_ENTRY("fsgsbase", FEATURE_FSGSBASE, P_NONE,
+			"-mfsgsbase")
+  ISA_NAMES_TABLE_ENTRY("fxsave", FEATURE_FXSAVE, P_NONE, "-mfxsr")
+  ISA_NAMES_TABLE_ENTRY("hle", FEATURE_HLE, P_NONE, "-mhle")
+  ISA_NAMES_TABLE_ENTRY("ibt", FEATURE_IBT, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("lahf_lm", FEATURE_LAHF_LM, P_NONE, "-msahf")
+  ISA_NAMES_TABLE_ENTRY("lm", FEATURE_LM, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("lwp", FEATURE_LWP, P_NONE, "-mlwp")
+  ISA_NAMES_TABLE_ENTRY("lzcnt", FEATURE_LZCNT, P_NONE, "-mlzcnt")
+  ISA_NAMES_TABLE_ENTRY("movbe", FEATURE_MOVBE, P_NONE, "-mmovbe")
+  ISA_NAMES_TABLE_ENTRY("movdir64b", FEATURE_MOVDIR64B, P_NONE,
+			"-mmovdir64b")
+  ISA_NAMES_TABLE_ENTRY("movdiri", FEATURE_MOVDIRI, P_NONE, "-mmovdiri")
+  ISA_NAMES_TABLE_ENTRY("mwaitx", FEATURE_MWAITX, P_NONE, "-mmwaitx")
+  ISA_NAMES_TABLE_ENTRY("osxsave", FEATURE_OSXSAVE, P_NONE, NULL)
+  ISA_NAMES_TABLE_ENTRY("pconfig", FEATURE_PCONFIG, P_NONE, "-mpconfig")
+  ISA_NAMES_TABLE_ENTRY("pku", FEATURE_PKU, P_NONE, "-mpku")
+  ISA_NAMES_TABLE_ENTRY("prefetchwt1", FEATURE_PREFETCHWT1, P_NONE,
+			"-mprefetchwt1")
+  ISA_NAMES_TABLE_ENTRY("prfchw", FEATURE_PRFCHW, P_NONE, "-mprfchw")
+  ISA_NAMES_TABLE_ENTRY("ptwrite", FEATURE_PTWRITE, P_NONE, "-mptwrite")
+  ISA_NAMES_TABLE_ENTRY("rdpid", FEATURE_RDPID, P_NONE, "-mrdpid")
+  ISA_NAMES_TABLE_ENTRY("rdrnd", FEATURE_RDRND, P_NONE, "-mrdrnd")
+  ISA_NAMES_TABLE_ENTRY("rdseed", FEATURE_RDSEED, P_NONE, "-mrdseed")
+  ISA_NAMES_TABLE_ENTRY("rtm", FEATURE_RTM, P_NONE, "-mrtm")
+  ISA_NAMES_TABLE_ENTRY("serialize", FEATURE_SERIALIZE, P_NONE,
+			"-mserialize")
+  ISA_NAMES_TABLE_ENTRY("sgx", FEATURE_SGX, P_NONE, "-msgx")
+  ISA_NAMES_TABLE_ENTRY("sha", FEATURE_SHA, P_NONE, "-msha")
+  ISA_NAMES_TABLE_ENTRY("shstk", FEATURE_SHSTK, P_NONE, "-mshstk")
+  ISA_NAMES_TABLE_ENTRY("tbm", FEATURE_TBM, P_NONE, "-mtbm")
+  ISA_NAMES_TABLE_ENTRY("tsxldtrk", FEATURE_TSXLDTRK, P_NONE,
+			"-mtsxldtrk")
+  ISA_NAMES_TABLE_ENTRY("vaes", FEATURE_VAES, P_NONE, "-mvaes")
+  ISA_NAMES_TABLE_ENTRY("waitpkg", FEATURE_WAITPKG, P_NONE, "-mwaitpkg")
+  ISA_NAMES_TABLE_ENTRY("wbnoinvd", FEATURE_WBNOINVD, P_NONE,
+			"-mwbnoinvd")
+  ISA_NAMES_TABLE_ENTRY("xsave", FEATURE_XSAVE, P_NONE, "-mxsave")
+  ISA_NAMES_TABLE_ENTRY("xsavec", FEATURE_XSAVEC, P_NONE, "-mxsavec")
+  ISA_NAMES_TABLE_ENTRY("xsaveopt", FEATURE_XSAVEOPT, P_NONE,
+			"-mxsaveopt")
+  ISA_NAMES_TABLE_ENTRY("xsaves", FEATURE_XSAVES, P_NONE, "-mxsaves")
+ISA_NAMES_TABLE_END