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Convert DF_SCAN etc from #define to an enum

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Whilst debugging an issue in df, I noticed that there are
some #define constants that could be an enum (thus making them known
to gdb).

Convert them to a new enum, and update the "id" field of
struct df_problem.

gcc/ChangeLog:
	* df.h (DF_SCAN, DF_LR, DF_LIVE, DF_RD, DF_CHAIN, DF_WORD_LR,
	DF_NOTE, DF_MD, DF_MIR, DF_LAST_PROBLEM_PLUS1): Convert from
	#define to...
	(enum df_problem_id): ...this new enum.
	(struct df_problem): Convert field "id" from "int" to
	enum df_problem_id.

From-SVN: r235522
This commit is contained in:
David Malcolm 2016-04-27 18:08:46 +00:00 committed by David Malcolm
parent 1e55d29a0c
commit b55b11bb7a
2 changed files with 23 additions and 11 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2016-04-27 David Malcolm <dmalcolm@redhat.com>
* df.h (DF_SCAN, DF_LR, DF_LIVE, DF_RD, DF_CHAIN, DF_WORD_LR,
DF_NOTE, DF_MD, DF_MIR, DF_LAST_PROBLEM_PLUS1): Convert from
#define to...
(enum df_problem_id): ...this new enum.
(struct df_problem): Convert field "id" from "int" to
enum df_problem_id.
2016-04-27 David Malcolm <dmalcolm@redhat.com>
* rtl.def: Update comment for "things in the instruction chain" to

25
gcc/df.h
View File

@ -43,17 +43,20 @@ union df_ref_d;
a uniform manner. The last four problems can be added or deleted
at any time are always defined (though LIVE is always there at -O2
or higher); the others are always there. */
#define DF_SCAN 0
#define DF_LR 1 /* Live Registers backward. */
#define DF_LIVE 2 /* Live Registers & Uninitialized Registers */
#define DF_RD 3 /* Reaching Defs. */
#define DF_CHAIN 4 /* Def-Use and/or Use-Def Chains. */
#define DF_WORD_LR 5 /* Subreg tracking lr. */
#define DF_NOTE 6 /* REG_DEAD and REG_UNUSED notes. */
#define DF_MD 7 /* Multiple Definitions. */
#define DF_MIR 8 /* Must-initialized Registers. */
enum df_problem_id
{
DF_SCAN,
DF_LR, /* Live Registers backward. */
DF_LIVE, /* Live Registers & Uninitialized Registers */
DF_RD, /* Reaching Defs. */
DF_CHAIN, /* Def-Use and/or Use-Def Chains. */
DF_WORD_LR, /* Subreg tracking lr. */
DF_NOTE, /* REG_DEAD and REG_UNUSED notes. */
DF_MD, /* Multiple Definitions. */
DF_MIR, /* Must-initialized Registers. */
#define DF_LAST_PROBLEM_PLUS1 (DF_MIR + 1)
DF_LAST_PROBLEM_PLUS1
};
/* Dataflow direction. */
enum df_flow_dir
@ -251,7 +254,7 @@ typedef void (*df_verify_solution_end) (void);
struct df_problem {
/* The unique id of the problem. This is used it index into
df->defined_problems to make accessing the problem data easy. */
unsigned int id;
enum df_problem_id id;
enum df_flow_dir dir; /* Dataflow direction. */
df_alloc_function alloc_fun;
df_reset_function reset_fun;