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Paper over problem with -frename-registers; Provide help for options 

From-SVN: r37661
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Michael Meissner 2000-11-22 18:07:05 +00:00 committed by Michael Meissner
parent 5789a524a6
commit fb0b2546c2
2 changed files with 76 additions and 36 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2000-11-22 Michael Meissner <meissner@redhat.com>
* d30v.h (TARGET_SWITCHES): Add documentation strings.
(TARGET_OPTIONS): Ditto.
(OPTIMIZATION_OPTIONS): Temporarily turn off -frename-registers if
-O3.
Wed Nov 22 06:40:56 2000 Jeffrey A Law (law@cygnus.com)
* pa.c (hppa_encode_label): Account for addition of encoding

105
gcc/config/d30v/d30v.h
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@ -419,37 +419,60 @@ extern int target_flags;
`target_flags'. Its definition is an initializer with a subgrouping for
each command option.
Each subgrouping contains a string constant, that defines the option name,
and a number, which contains the bits to set in `target_flags'. A negative
number says to clear bits instead; the negative of the number is which bits
to clear. The actual option name is made by appending `-m' to the specified
name.
Each subgrouping contains a string constant, that defines the option name, a
number, which contains the bits to set in `target_flags', and a second
string which is the description displayed by `--help'. If the number is
negative then the bits specified by the number are cleared instead of being
set. If the description string is present but empty, then no help
information will be displayed for that option, but it will not count as an
undocumented option. The actual option name is made by appending `-m' to
the specified name.
One of the subgroupings should have a null string. The number in this
grouping is the default value for `target_flags'. Any target options act
grouping is the default value for target_flags. Any target options act
starting with that value.
Here is an example which defines `-m68000' and `-m68020' with opposite
meanings, and picks the latter as the default:
Here is an example which defines -m68000 and -m68020 with opposite meanings,
and picks the latter as the default:
#define TARGET_SWITCHES \
{ { "68020", 1}, \
{ "68000", -1}, \
{ "", 1}} */
#define TARGET_SWITCHES \
{ { "68020", TARGET_MASK_68020, "" }, \
{ "68000", -TARGET_MASK_68020, "Compile for the 68000" }, \
{ "", TARGET_MASK_68020, "" }} */
#define TARGET_SWITCHES \
{ \
{ "cond-move", -MASK_NO_COND_MOVE }, \
{ "no-cond-move", MASK_NO_COND_MOVE }, \
{ "debug-arg", MASK_DEBUG_ARG }, \
{ "debug-stack", MASK_DEBUG_STACK }, \
{ "debug-addr", MASK_DEBUG_ADDR }, \
{ "asm-optimize", 0 }, \
{ "no-asm-optimize", 0 }, \
{ "extmem", 0 }, \
{ "extmemory", 0 }, \
{ "onchip", 0 }, \
{ "", TARGET_DEFAULT }, \
{ "cond-move", -MASK_NO_COND_MOVE, \
N_("Enable use of conditional move instructions") }, \
\
{ "no-cond-move", MASK_NO_COND_MOVE, \
N_("Disable use of conditional move instructions") }, \
\
{ "debug-arg", MASK_DEBUG_ARG, \
N_("Debug argument support in compiler") }, \
\
{ "debug-stack", MASK_DEBUG_STACK, \
N_("Debug stack support in compiler") }, \
\
{ "debug-addr", MASK_DEBUG_ADDR, \
N_("Debug memory address support in compiler") }, \
\
{ "asm-optimize", 0, \
N_("Make adjacent short instructions parallel if possible.") }, \
\
{ "no-asm-optimize", 0, \
N_("Do not make adjacent short instructions parallel.") }, \
\
{ "extmem", 0, \
N_("Link programs/data to be in external memory by default") }, \
\
{ "extmemory", 0, \
N_("Link programs/data to be in external memory by default") }, \
\
{ "onchip", 0, \
N_("Link programs/data to be in onchip memory by default") }, \
\
{ "", TARGET_DEFAULT, "" }, \
}
/* This macro is similar to `TARGET_SWITCHES' but defines names of command
@ -457,23 +480,27 @@ extern int target_flags;
subgrouping for each command option.
Each subgrouping contains a string constant, that defines the fixed part of
the option name, and the address of a variable. The variable, type `char
*', is set to the variable part of the given option if the fixed part
matches. The actual option name is made by appending `-m' to the specified
name.
the option name, the address of a variable, and a description string. The
variable, type `char *', is set to the variable part of the given option if
the fixed part matches. The actual option name is made by appending `-m' to
the specified name.
Here is an example which defines `-mshort-data-NUMBER'. If the given option
is `-mshort-data-512', the variable `m88k_short_data' will be set to the
string `"512"'.
Here is an example which defines `-mshort-data-<number>'. If the given
option is `-mshort-data-512', the variable `m88k_short_data' will be set to
the string "512".
extern char *m88k_short_data;
#define TARGET_OPTIONS \
{ { "short-data-", &m88k_short_data } } */
extern char *m88k_short_data;
#define TARGET_OPTIONS \
{ { "short-data-", &m88k_short_data, \
"Specify the size of the short data section" } } */
#define TARGET_OPTIONS \
{ \
{"branch-cost=", &d30v_branch_cost_string}, \
{"cond-exec=", &d30v_cond_exec_string}, \
{"branch-cost=", &d30v_branch_cost_string, \
N_("Change the branch costs within the compiler") }, \
\
{"cond-exec=", &d30v_cond_exec_string, \
N_("Change the threshold for conversion to conditional execution") }, \
}
/* This macro is a C statement to print on `stderr' a string describing the
@ -517,7 +544,13 @@ extern int target_flags;
*Do not examine `write_symbols' in this macro!* The debugging options are
*not supposed to alter the generated code. */
/* #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) */
/* -frename-registers seems to abort on d30v, turn off until fixed. */
#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
do { \
if (LEVEL >= 3) \
flag_rename_registers = 0; \
} while (0)
/* Define this macro if debugging can be performed even without a frame
pointer. If this macro is defined, GNU CC will turn on the