i386: Raise deprecate warning for -mavx10.1-256/512 and -mevex512 while add -mavx10.1 back with 512 bit alias

When AVX10.1 options are added into GCC 14, E-core is supposed to
support up to 256 bit vector width, while P-core up to 512 bit vector
width. Therefore, we added avx10.1-256 and avx10.1-512 options into
compiler since there will be real platforms with 256 bit only support.
At the same time, for old platforms could also compile a 256 bit only
binary, we introduced -mno-evex512 to disable 512 bit vector.

However, all the future platforms will now support 512 bit vector width,
including P-core and E-core. It will result in no need for split the
option for vector width. Therefore, we will remove them in this patch.
Unlike AVX10.2 options, AVX10.1 options has been there in a major
release, so we have to raise a deprecate warning in GCC 15 and remove
them in GCC 16. At the same time, to align with avx10.2 options, we will
add just removed avx10.1 option back with warning to mention its
behavior change.

gcc/ChangeLog:

	* common/config/i386/cpuinfo.h
	(get_available_features): Change to FEATURE_AVX10_1.
	* common/config/i386/i386-common.cc
	(OPTION_MASK_ISA2_AVX10_1_512_SET): Renamed to ...
	(OPTION_MASK_ISA2_AVX10_1_SET): ... this.
	(OPTION_MASK_ISA2_AVX10_2_SET): Use renamed macro.
	(OPTION_MASK_ISA2_AVX10_1_UNSET): Ditto.
	(ix86_handle_option): Ditto.
	(processor_alias_table): Use P_PROC_AVX10_1.
	* common/config/i386/i386-cpuinfo.h
	(enum feature_priority): Rename from AVX10_1_512 to AVX10_1.
	(enum processor_features): Ditto.
	* common/config/i386/i386-isas.h: Add avx10.1.
	* config/i386/driver-i386.cc
	(host_detect_local_cpu): Use renamed enum.
	* config/i386/i386-c.cc
	(ix86_target_macros_internal): Rename to avx10.1.
	* config/i386/i386-isa.def (AVX10_1_512): Rename to ...
	(AVX10_1): ... this.
	* config/i386/i386-options.cc (isa2_opts): Rename to avx10.1.
	(ix86_valid_target_attribute_inner_p): Add avx10.1.
	(ix86_option_override_internal): Rename to AVX10_1.
	Revise warnings to mention behavior change for option
	combination in GCC 16.
	* config/i386/i386.h (PTA_DIAMONDRAPIDS): Use AVX10_1.
	* config/i386/i386.opt: Add avx10.1.
	Add deprecate warnings for mevex512 and mavx10.1-256/512.
	* config/i386/i386.opt.urls: Add avx10.1.
	* doc/extend.texi: Ditto.
	* doc/sourcebuild.texi: Ditto.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/avx10-check.h: Change to avx10.1.
	* gcc.target/i386/avx10_1-1.c: Add warning check.
	* gcc.target/i386/avx10_1-10.c: Ditto.
	* gcc.target/i386/avx10_1-11.c: Ditto.
	* gcc.target/i386/avx10_1-12.c: Ditto.
	* gcc.target/i386/avx10_1-13.c: Ditto.
	* gcc.target/i386/avx10_1-15.c: Ditto.
	* gcc.target/i386/avx10_1-16.c: Ditto.
	* gcc.target/i386/avx10_1-18.c: Ditto.
	* gcc.target/i386/avx10_1-19.c: Ditto.
	* gcc.target/i386/avx10_1-2.c: Ditto.
	* gcc.target/i386/avx10_1-20.c: Ditto.
	* gcc.target/i386/avx10_1-21.c: Ditto.
	* gcc.target/i386/avx10_1-22.c: Ditto.
	* gcc.target/i386/avx10_1-23.c: Ditto.
	* gcc.target/i386/avx10_1-26.c: Ditto.
	* gcc.target/i386/avx10_1-3.c: Ditto.
	* gcc.target/i386/avx10_1-4.c: Ditto.
	* gcc.target/i386/avx10_1-7.c: Ditto.
	* gcc.target/i386/avx10_1-8.c: Ditto.
	* gcc.target/i386/avx10_1-9.c: Ditto.
	* gcc.target/i386/noevex512-1.c: Ditto.
	* gcc.target/i386/noevex512-2.c: Ditto.
	* gcc.target/i386/pr111068.c: Ditto.
	* gcc.target/i386/pr111907.c: Ditto.
	* gcc.target/i386/pr117240_avx512f.c: Ditto.
	* gcc.target/i386/pr117304-1.c: Ditto.
	* gcc.target/i386/pr117946.c: Ditto.
	* gcc.target/i386/avx10_1-24.c: Removed.
	* gcc.target/i386/avx10_1-25.c: Removed.
	* gcc.target/i386/avx10_1-5.c: Removed.
	* gcc.target/i386/avx10_1-6.c: Removed.

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