Paper over problem with -frename-registers; Provide help for options
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@ -1,3 +1,10 @@
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2000-11-22 Michael Meissner <meissner@redhat.com>
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* d30v.h (TARGET_SWITCHES): Add documentation strings.
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(TARGET_OPTIONS): Ditto.
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(OPTIMIZATION_OPTIONS): Temporarily turn off -frename-registers if
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-O3.
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Wed Nov 22 06:40:56 2000 Jeffrey A Law (law@cygnus.com)
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* pa.c (hppa_encode_label): Account for addition of encoding
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@ -419,37 +419,60 @@ extern int target_flags;
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`target_flags'. Its definition is an initializer with a subgrouping for
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each command option.
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Each subgrouping contains a string constant, that defines the option name,
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and a number, which contains the bits to set in `target_flags'. A negative
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number says to clear bits instead; the negative of the number is which bits
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to clear. The actual option name is made by appending `-m' to the specified
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name.
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Each subgrouping contains a string constant, that defines the option name, a
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number, which contains the bits to set in `target_flags', and a second
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string which is the description displayed by `--help'. If the number is
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negative then the bits specified by the number are cleared instead of being
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set. If the description string is present but empty, then no help
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information will be displayed for that option, but it will not count as an
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undocumented option. The actual option name is made by appending `-m' to
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the specified name.
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One of the subgroupings should have a null string. The number in this
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grouping is the default value for `target_flags'. Any target options act
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grouping is the default value for target_flags. Any target options act
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starting with that value.
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Here is an example which defines `-m68000' and `-m68020' with opposite
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meanings, and picks the latter as the default:
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Here is an example which defines -m68000 and -m68020 with opposite meanings,
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and picks the latter as the default:
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#define TARGET_SWITCHES \
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{ { "68020", 1}, \
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{ "68000", -1}, \
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{ "", 1}} */
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#define TARGET_SWITCHES \
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{ { "68020", TARGET_MASK_68020, "" }, \
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{ "68000", -TARGET_MASK_68020, "Compile for the 68000" }, \
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{ "", TARGET_MASK_68020, "" }} */
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#define TARGET_SWITCHES \
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{ \
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{ "cond-move", -MASK_NO_COND_MOVE }, \
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{ "no-cond-move", MASK_NO_COND_MOVE }, \
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{ "debug-arg", MASK_DEBUG_ARG }, \
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{ "debug-stack", MASK_DEBUG_STACK }, \
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{ "debug-addr", MASK_DEBUG_ADDR }, \
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{ "asm-optimize", 0 }, \
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{ "no-asm-optimize", 0 }, \
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{ "extmem", 0 }, \
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{ "extmemory", 0 }, \
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{ "onchip", 0 }, \
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{ "", TARGET_DEFAULT }, \
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{ "cond-move", -MASK_NO_COND_MOVE, \
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N_("Enable use of conditional move instructions") }, \
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\
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{ "no-cond-move", MASK_NO_COND_MOVE, \
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N_("Disable use of conditional move instructions") }, \
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\
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{ "debug-arg", MASK_DEBUG_ARG, \
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N_("Debug argument support in compiler") }, \
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\
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{ "debug-stack", MASK_DEBUG_STACK, \
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N_("Debug stack support in compiler") }, \
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\
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{ "debug-addr", MASK_DEBUG_ADDR, \
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N_("Debug memory address support in compiler") }, \
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\
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{ "asm-optimize", 0, \
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N_("Make adjacent short instructions parallel if possible.") }, \
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\
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{ "no-asm-optimize", 0, \
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N_("Do not make adjacent short instructions parallel.") }, \
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\
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{ "extmem", 0, \
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N_("Link programs/data to be in external memory by default") }, \
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\
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{ "extmemory", 0, \
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N_("Link programs/data to be in external memory by default") }, \
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\
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{ "onchip", 0, \
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N_("Link programs/data to be in onchip memory by default") }, \
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\
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{ "", TARGET_DEFAULT, "" }, \
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}
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/* This macro is similar to `TARGET_SWITCHES' but defines names of command
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@ -457,23 +480,27 @@ extern int target_flags;
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subgrouping for each command option.
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Each subgrouping contains a string constant, that defines the fixed part of
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the option name, and the address of a variable. The variable, type `char
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*', is set to the variable part of the given option if the fixed part
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matches. The actual option name is made by appending `-m' to the specified
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name.
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the option name, the address of a variable, and a description string. The
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variable, type `char *', is set to the variable part of the given option if
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the fixed part matches. The actual option name is made by appending `-m' to
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the specified name.
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Here is an example which defines `-mshort-data-NUMBER'. If the given option
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is `-mshort-data-512', the variable `m88k_short_data' will be set to the
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string `"512"'.
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Here is an example which defines `-mshort-data-<number>'. If the given
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option is `-mshort-data-512', the variable `m88k_short_data' will be set to
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the string "512".
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extern char *m88k_short_data;
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#define TARGET_OPTIONS \
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{ { "short-data-", &m88k_short_data } } */
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extern char *m88k_short_data;
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#define TARGET_OPTIONS \
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{ { "short-data-", &m88k_short_data, \
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"Specify the size of the short data section" } } */
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#define TARGET_OPTIONS \
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{ \
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{"branch-cost=", &d30v_branch_cost_string}, \
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{"cond-exec=", &d30v_cond_exec_string}, \
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{"branch-cost=", &d30v_branch_cost_string, \
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N_("Change the branch costs within the compiler") }, \
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\
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{"cond-exec=", &d30v_cond_exec_string, \
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N_("Change the threshold for conversion to conditional execution") }, \
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}
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/* This macro is a C statement to print on `stderr' a string describing the
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@ -517,7 +544,13 @@ extern int target_flags;
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*Do not examine `write_symbols' in this macro!* The debugging options are
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*not supposed to alter the generated code. */
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/* #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) */
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/* -frename-registers seems to abort on d30v, turn off until fixed. */
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#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
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do { \
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if (LEVEL >= 3) \
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flag_rename_registers = 0; \
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} while (0)
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/* Define this macro if debugging can be performed even without a frame
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pointer. If this macro is defined, GNU CC will turn on the
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