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df: make df_problem instances "const" 

The various struct df_problem instances are constant data; mark them
as such.

gcc/ChangeLog:
	* df-core.c (df_add_problem): Make the problem param be const.
	(df_remove_problem): Make local "problem" be const.
	* df-problems.c (problem_RD): Make const.
	(problem_LR): Likewise.
	(problem_LIVE): Likewise.
	(problem_MIR): Likewise.
	(problem_CHAIN): Likewise.
	(problem_WORD_LR): Likewise.
	(problem_NOTE): Likewise.
	(problem_MD): Likewise.
	* df-scan.c (problem_SCAN): Likewise.
	* df.h (struct df_problem): Make field "dependent_problem" be
	const.
	(struct dataflow): Likewise for field "problem".
	(df_add_problem): Make param const.

From-SVN: r235524
This commit is contained in:
David Malcolm 2016-04-27 18:18:45 +00:00 committed by David Malcolm
parent 98544adc26
commit fdd5680ca7
5 changed files with 32 additions and 14 deletions
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18
gcc/ChangeLog
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@ -1,3 +1,21 @@
2016-04-27 David Malcolm <dmalcolm@redhat.com>
* df-core.c (df_add_problem): Make the problem param be const.
(df_remove_problem): Make local "problem" be const.
* df-problems.c (problem_RD): Make const.
(problem_LR): Likewise.
(problem_LIVE): Likewise.
(problem_MIR): Likewise.
(problem_CHAIN): Likewise.
(problem_WORD_LR): Likewise.
(problem_NOTE): Likewise.
(problem_MD): Likewise.
* df-scan.c (problem_SCAN): Likewise.
* df.h (struct df_problem): Make field "dependent_problem" be
const.
(struct dataflow): Likewise for field "problem".
(df_add_problem): Make param const.
2016-04-27 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_spill_class): Enable for TARGET_SSE2 when

4
gcc/df-core.c
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@ -411,7 +411,7 @@ struct df_d *df;
/* Add PROBLEM (and any dependent problems) to the DF instance. */
void
df_add_problem (struct df_problem *problem)
df_add_problem (const struct df_problem *problem)
{
struct dataflow *dflow;
int i;
@ -584,7 +584,7 @@ df_set_blocks (bitmap blocks)
void
df_remove_problem (struct dataflow *dflow)
{
struct df_problem *problem;
const struct df_problem *problem;
int i;
if (!dflow)

16
gcc/df-problems.c
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@ -668,7 +668,7 @@ df_rd_bottom_dump (basic_block bb, FILE *file)
/* All of the information associated with every instance of the problem. */
static struct df_problem problem_RD =
static const struct df_problem problem_RD =
{
DF_RD, /* Problem id. */
DF_FORWARD, /* Direction. */
@ -1190,7 +1190,7 @@ df_lr_verify_solution_end (void)
/* All of the information associated with every instance of the problem. */
static struct df_problem problem_LR =
static const struct df_problem problem_LR =
{
DF_LR, /* Problem id. */
DF_BACKWARD, /* Direction. */
@ -1718,7 +1718,7 @@ df_live_verify_solution_end (void)
/* All of the information associated with every instance of the problem. */
static struct df_problem problem_LIVE =
static const struct df_problem problem_LIVE =
{
DF_LIVE, /* Problem id. */
DF_FORWARD, /* Direction. */
@ -2169,7 +2169,7 @@ df_mir_verify_solution_end (void)
/* All of the information associated with every instance of the problem. */
static struct df_problem problem_MIR =
static const struct df_problem problem_MIR =
{
DF_MIR, /* Problem id. */
DF_FORWARD, /* Direction. */
@ -2641,7 +2641,7 @@ df_chain_insn_bottom_dump (const rtx_insn *insn, FILE *file)
}
}
static struct df_problem problem_CHAIN =
static const struct df_problem problem_CHAIN =
{
DF_CHAIN, /* Problem id. */
DF_NONE, /* Direction. */
@ -3008,7 +3008,7 @@ df_word_lr_bottom_dump (basic_block bb, FILE *file)
/* All of the information associated with every instance of the problem. */
static struct df_problem problem_WORD_LR =
static const struct df_problem problem_WORD_LR =
{
DF_WORD_LR, /* Problem id. */
DF_BACKWARD, /* Direction. */
@ -3683,7 +3683,7 @@ df_note_free (void)
/* All of the information associated every instance of the problem. */
static struct df_problem problem_NOTE =
static const struct df_problem problem_NOTE =
{
DF_NOTE, /* Problem id. */
DF_NONE, /* Direction. */
@ -4693,7 +4693,7 @@ df_md_bottom_dump (basic_block bb, FILE *file)
df_print_regset (file, &bb_info->out);
}
static struct df_problem problem_MD =
static const struct df_problem problem_MD =
{
DF_MD, /* Problem id. */
DF_FORWARD, /* Direction. */

2
gcc/df-scan.c
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@ -396,7 +396,7 @@ df_scan_start_block (basic_block bb, FILE *file)
#endif
}
static struct df_problem problem_SCAN =
static const struct df_problem problem_SCAN =
{
DF_SCAN, /* Problem id. */
DF_NONE, /* Direction. */

6
gcc/df.h
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@ -275,7 +275,7 @@ struct df_problem {
df_dump_insn_problem_function dump_insn_bottom_fun;
df_verify_solution_start verify_start_fun;
df_verify_solution_end verify_end_fun;
struct df_problem *dependent_problem;
const struct df_problem *dependent_problem;
unsigned int block_info_elt_size;
/* The timevar id associated with this pass. */
@ -290,7 +290,7 @@ struct df_problem {
/* The specific instance of the problem to solve. */
struct dataflow
{
struct df_problem *problem; /* The problem to be solved. */
const struct df_problem *problem; /* The problem to be solved. */
/* Array indexed by bb->index, that contains basic block problem and
solution specific information. */
@ -948,7 +948,7 @@ extern struct df_d *df;
/* Functions defined in df-core.c. */
extern void df_add_problem (struct df_problem *);
extern void df_add_problem (const struct df_problem *);
extern int df_set_flags (int);
extern int df_clear_flags (int);
extern void df_set_blocks (bitmap);