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Re: [Revised patch] Rework MIPS command-line handling

Eric approved this, so I've checked it in.

Richard Sandiford <> writes:
> [include/]
> 	* opcode/mips.h (CPU_R2000): Remove.
> [gas/]
> 	* doc/c-mips.texi: Remove -mcpu.  Document -mabi.
> 	* (MIPS_CPU_STRING_DEFAULT): New configuration macro.
> 	(USE_E_MIPS_ABI_O32, MIPS_DEFAULT_64BIT): New configuration macros.
> 	* configure, Regenerate.
> 	* config/tc-mips.c (file_mips_abi): Rename to mips_abi.
> 	(mips_set_options): Remove "abi" field.
> 	(mips_opts): Update accordingly.  Replace all uses of mips_opts.abi
> 	with mips_abi.
> 	(mips_cpu): Remove.
> 	(mips_arch_string, mips_arch_info): New vars.
> 	(mips_tune_string, mips_tune_info): New vars.
> 	(HAVE_32BIT_GPRS, HAVE_32BIT_FPRS): Don't check the ABI.
> 	(mips_isa_to_str, mips_cpu_to_str): Remove.
> 	(mips_ip): If the selected architecture is a generic ISA rather
> 	than a processor, only mention the ISA level in error messages.
> 	(OPTION_MCPU): Remove.
> 	(OPTION_FP64): New.
> 	(md_longopts): Add -mfp64, remove -mcpu.
> 	(mips_set_option_string): New fn.
> 	(md_parse_option): Make -mipsN update file_mips_isa rather than
> 	mips_opts.isa.  Use mips_set_option_string to set -march or -mtune.
> 	Don't let -mgp32 and -mfp32 change the ABI.
> 	(show): Move to end of file.  Constify string argument.
> 	(md_show_usage): Move to the end of the file.  Read available
> 	architectures from mips_cpu_info_table.
> 	(mips_set_architecture): New fn.
> 	(mips_after_parse_args): Rework.  Remove -mcpu handling.  -mipsN
> 	is an alias for -march=mipsN.  Don't change the ABI based on other
> 	flags.  Infer the register size from the ABI as	well as the
> 	architecture.  Complain about more conflicting arguments.
> 	[Logic unified with gcc 3.2.]
> 	(s_mipsset): Don't change the ABI.
> 	(mips_elf_final_processing): Check USE_E_MIPS_ABI_O32.
> 	(mips_cpu_info_table): Remove Generic-MIPS* entries, keeping just
> 	"mipsN"-type entries.  Remove entries that vary only in the
> 	manufacturer's prefix, or that have "000" replaced by "k".
> 	Remove TARGET_CPU entries.  Make r2000 entry use CPU_R3000.
> 	(mips_strict_matching_cpu_name_p, mips_matching_cpu_name_p): New fns.
> 	(mips_parse_cpu): New fn.
> 	(mips_cpu_info_from_name, mips_cpu_info_from_cpu): Remove.
> 	(mips_cpu_info_from_isa): Minor formatting tweak.
> [gas/testsuite]
> 	* gas/mips/mips-gp32-fp64.d,
> 	* gas/mips/mips-gp32-fp64-pic.d: Add -mfp64.

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