x86: Update -mtune=alderlake

x86: Update -mtune=alderlake

Update mtune for alderlake, Alder Lake Intel Hybrid Technology will not support
Intel® AVX-512. ISA features such as Intel® AVX, AVX-VNNI, Intel® AVX2, and
UMONITOR/UMWAIT/TPAUSE are supported.

gcc/ChangeLog

	* config/i386/i386-options.c (m_CORE_AVX2): Remove Alderlake
	from m_CORE_AVX2.
	(processor_cost_table): Use alderlake_cost for Alderlake.
	* config/i386/i386.c (ix86_sched_init_global): Handle Alderlake.
	* config/i386/x86-tune-costs.h (struct processor_costs): Add alderlake
	cost.
	* config/i386/x86-tune-sched.c (ix86_issue_rate): Change Alderlake
	issue rate to 4.
	(ix86_adjust_cost): Handle Alderlake.
	* config/i386/x86-tune.def (X86_TUNE_SCHEDULE): Enable for Alderlake.
	(X86_TUNE_PARTIAL_REG_DEPENDENCY): Likewise.
	(X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY): Likewise.
	(X86_TUNE_SSE_PARTIAL_REG_FP_CONVERTS_DEPENDENCY): Likewise.
	(X86_TUNE_SSE_PARTIAL_REG_CONVERTS_DEPENDENCY): Likewise.
	(X86_TUNE_MEMORY_MISMATCH_STALL): Likewise.
	(X86_TUNE_USE_LEAVE): Likewise.
	(X86_TUNE_PUSH_MEMORY): Likewise.
	(X86_TUNE_USE_INCDEC): Likewise.
	(X86_TUNE_INTEGER_DFMODE_MOVES): Likewise.
	(X86_TUNE_MISALIGNED_MOVE_STRING_PRO_EPILOGUES): Likewise.
	(X86_TUNE_USE_SAHF): Likewise.
	(X86_TUNE_USE_BT): Likewise.
	(X86_TUNE_AVOID_FALSE_DEP_FOR_BMI): Likewise.
	(X86_TUNE_ONE_IF_CONV_INSN): Likewise.
	(X86_TUNE_AVOID_MFENCE): Likewise.
	(X86_TUNE_USE_SIMODE_FIOP): Likewise.
	(X86_TUNE_EXT_80387_CONSTANTS): Likewise.
	(X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL): Likewise.
	(X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL): Likewise.
	(X86_TUNE_SSE_TYPELESS_STORES): Likewise.
	(X86_TUNE_SSE_LOAD0_BY_PXOR): Likewise.
	(X86_TUNE_AVOID_4BYTE_PREFIXES): Likewise.
	(X86_TUNE_USE_GATHER): Disable for Alderlake.
	(X86_TUNE_AVX256_MOVE_BY_PIECES): Likewise.
	(X86_TUNE_AVX256_STORE_BY_PIECES): Likewise.