Compiler option cleanup

In an effort to reduce the clutter in the CCS project settings we have removed/deprecated supported for several compiler options. These changes are effective in the ARM, C28x, and MSP430 compilers starting with 16.6.0.STS.

Deprecated/Removed Options

This is the list of options that are either removed or deprecated. All the options in this list will no longer appear in CCS, the help output, or the documentation. Options with a remark diagnostic are still accepted, but it is recommended that you avoid using them.

Option	Diagnostic	ISA	Notes
--optimize_with_debug	Remark	All	This option is the default behavior of the compiler. The presence of debug information does not restrict optimizations.
--symdebug:keep_all_types	Remark	All	This is a COFF only option and no longer relevant.
--no_intrinsics	Remark	All
All precompiled header file options	Error	All
--static_template_instantiation	Error	All except C28x	This option is only useful for COFF, which is no longer supported for any ISAs except C28x
--gcc	Remark	All	This behavior is enabled by default
--buffer_diagnostics	Remark	All	This behavior is enabled by default
-mt	Remark	ARM	Use –code_state=16 instead.
--abi	Remark	All except C28x	Every target except C28x only supports EABI.
--profile:power	Error	All	This features has been deprecated for a long time.
--small_enum	Remark	All	The size of enums can be controlled by the –enum_type option
--max_branch_chain and –disable_branch_chaining	Remark	ARM	This is a very advanced optimization setting that is difficult to tweak.
--c2xlp_src_compatible	Remark	C28x
--asm_code_fill, --asm_data_fill	Remark	C28x
--single_inline	Remark	All
--opt_for_cache	Remark	ARM	The –opt_for_cache option was an experiment that turned out not to work well in many cases. We advise that you try different –opt_for_speed settings to get the best performance on cache devices.
--syms_ignore_case	Remark	All
--copy_file	Remark	All	Use the .copy directive in assembly code.
--no_const_clink	Remark	All	Use –data_subsections=off instead.
--output_all_syms	Remark	All	This is the default behavior of the compiler.
--ual	Remark	ARM	This is the default behavior of the compiler.
--cdebug_asm_data	Error	C28x
--asm_remarks	Remark	C28x	Use –issue_remarks instead.
--keep_unneeded_statics	Remark	All	Use the RETAIN pragma to keep unreferenced symbols.
--std_lib_defined --std_lib_redefined --std_lib_not_defined	Remark	All	The –std_lib_redefined option is the only one that has any effect on the compilation. Users are required to adhere to the C/C++ language standards when overriding library functions.
--multibyte_chars	Remark	All	This is the default behavior of the compiler.
--disable_dual_state	Remark	ARM	This option is not applicable for EABI.
--signed_chars	Remark	ARM	Use –plain_char=signed.
--kr_compatible	Error	All
--embedded_cpp	Error	All

Options that are hidden in CCS

This list contains options that are hidden in CCS. The options are still available to users that use the command line to run the compiler.

Option	Notes
--tool_version	This information can be found in the project settings
--verbose_diagnostics	The option causes issues with the CCS problem viewer.
--diag_wrap	The option causes issues with the CCS problem viewer.
--display_error_number	CCS requires this option to be set
--write_diagnostic_file	The option causes issues with the CCS problem viewer
--gen_dead_funcs_list/--use_dead_funcs_list	The options do not work well with the CCS compilation flow. The –o4, -pm, --gen_func_subsections options are preferred.

Renamed Options

This is the list of renamed options. The old form is still accepted, but a remark will be issued. CCS users will automatically use the new options when a project is migrated to a new compiler.

Option	New name
--gen_acp_xref	--gen_cross_reference
--cross_reference	--asm_listing_cross_reference
--gen_acp_raw	--gen_parser_listing
--gen_aux_user_info	--gen_func_info_listing