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Use rtx_expr_list for expr_status.x_forced_labels 

gcc/
2014-08-27  David Malcolm  <dmalcolm@redhat.com>

	* function.h (struct expr_status): Strengthen field
	"x_forced_labels" from rtx to rtx_expr_list *.

	* cfgbuild.c (make_edges): Split local "x" into two locals,
	strengthening one from rtx to rtx_expr_list *, and using methods
	of said class.
	* dwarf2cfi.c (create_trace_edges): Split local "lab" out; within
	loop over forced_labels, introduce strengthen it from rtx to
	rtx_expr_list *, using methods to clarify the code.
	* jump.c (rebuild_jump_labels_1): Strengthen local "insn" from rtx
	to rtx_expr_list *, using methods of said class to clarify the
	code.
	* reload1.c (set_initial_label_offsets): Split local "x" into two
	per-loop variables, strengthening the first from rtx to
	rtx_expr_list * and using methods.

From-SVN: r214602
This commit is contained in:
David Malcolm 2014-08-27 20:33:38 +00:00 committed by David Malcolm
parent 38e60c554d
commit ca486330c4
6 changed files with 37 additions and 21 deletions
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18
gcc/ChangeLog
View File

@ -1,3 +1,21 @@
2014-08-27 David Malcolm <dmalcolm@redhat.com>
* function.h (struct expr_status): Strengthen field
"x_forced_labels" from rtx to rtx_expr_list *.
* cfgbuild.c (make_edges): Split local "x" into two locals,
strengthening one from rtx to rtx_expr_list *, and using methods
of said class.
* dwarf2cfi.c (create_trace_edges): Split local "lab" out; within
loop over forced_labels, introduce strengthen it from rtx to
rtx_expr_list *, using methods to clarify the code.
* jump.c (rebuild_jump_labels_1): Strengthen local "insn" from rtx
to rtx_expr_list *, using methods of said class to clarify the
code.
* reload1.c (set_initial_label_offsets): Split local "x" into two
per-loop variables, strengthening the first from rtx to
rtx_expr_list * and using methods.
2014-08-27 David Malcolm <dmalcolm@redhat.com>
* coretypes.h (class rtx_expr_list): Add forward declaration.

7
gcc/cfgbuild.c
View File

@ -219,7 +219,6 @@ make_edges (basic_block min, basic_block max, int update_p)
FOR_BB_BETWEEN (bb, min, max->next_bb, next_bb)
{
rtx_insn *insn;
rtx x;
enum rtx_code code;
edge e;
edge_iterator ei;
@ -285,8 +284,8 @@ make_edges (basic_block min, basic_block max, int update_p)
everything on the forced_labels list. */
else if (computed_jump_p (insn))
{
for (x = forced_labels; x; x = XEXP (x, 1))
make_label_edge (edge_cache, bb, XEXP (x, 0), EDGE_ABNORMAL);
for (rtx_expr_list *x = forced_labels; x; x = x->next ())
make_label_edge (edge_cache, bb, x->element (), EDGE_ABNORMAL);
}
/* Returns create an exit out. */
@ -338,7 +337,7 @@ make_edges (basic_block min, basic_block max, int update_p)
taken, then only calls to those functions or to other
nested functions that use them could possibly do
nonlocal gotos. */
for (x = nonlocal_goto_handler_labels; x; x = XEXP (x, 1))
for (rtx x = nonlocal_goto_handler_labels; x; x = XEXP (x, 1))
make_label_edge (edge_cache, bb, XEXP (x, 0),
EDGE_ABNORMAL | EDGE_ABNORMAL_CALL);
}

14
gcc/dwarf2cfi.c
View File

@ -2286,7 +2286,7 @@ maybe_record_trace_start_abnormal (rtx start, rtx origin)
static void
create_trace_edges (rtx insn)
{
rtx tmp, lab;
rtx tmp;
int i, n;
if (JUMP_P (insn))
@ -2303,14 +2303,14 @@ create_trace_edges (rtx insn)
n = GET_NUM_ELEM (vec);
for (i = 0; i < n; ++i)
{
lab = XEXP (RTVEC_ELT (vec, i), 0);
rtx lab = XEXP (RTVEC_ELT (vec, i), 0);
maybe_record_trace_start (lab, insn);
}
}
else if (computed_jump_p (insn))
{
for (lab = forced_labels; lab; lab = XEXP (lab, 1))
maybe_record_trace_start (XEXP (lab, 0), insn);
for (rtx_expr_list *lab = forced_labels; lab; lab = lab->next ())
maybe_record_trace_start (lab->element (), insn);
}
else if (returnjump_p (insn))
;
@ -2319,13 +2319,13 @@ create_trace_edges (rtx insn)
n = ASM_OPERANDS_LABEL_LENGTH (tmp);
for (i = 0; i < n; ++i)
{
lab = XEXP (ASM_OPERANDS_LABEL (tmp, i), 0);
rtx lab = XEXP (ASM_OPERANDS_LABEL (tmp, i), 0);
maybe_record_trace_start (lab, insn);
}
}
else
{
lab = JUMP_LABEL (insn);
rtx lab = JUMP_LABEL (insn);
gcc_assert (lab != NULL);
maybe_record_trace_start (lab, insn);
}
@ -2338,7 +2338,7 @@ create_trace_edges (rtx insn)
/* Process non-local goto edges. */
if (can_nonlocal_goto (insn))
for (lab = nonlocal_goto_handler_labels; lab; lab = XEXP (lab, 1))
for (rtx lab = nonlocal_goto_handler_labels; lab; lab = XEXP (lab, 1))
maybe_record_trace_start_abnormal (XEXP (lab, 0), insn);
}
else if (rtx_sequence *seq = dyn_cast <rtx_sequence *> (PATTERN (insn)))

2
gcc/function.h
View File

@ -135,7 +135,7 @@ struct GTY(()) expr_status {
rtx x_apply_args_value;
/* List of labels that must never be deleted. */
rtx x_forced_labels;
rtx_expr_list *x_forced_labels;
};
typedef struct call_site_record_d *call_site_record;

8
gcc/jump.c
View File

@ -74,7 +74,7 @@ static int returnjump_p_1 (rtx *, void *);
static void
rebuild_jump_labels_1 (rtx_insn *f, bool count_forced)
{
rtx insn;
rtx_expr_list *insn;
timevar_push (TV_REBUILD_JUMP);
init_label_info (f);
@ -85,9 +85,9 @@ rebuild_jump_labels_1 (rtx_insn *f, bool count_forced)
count doesn't drop to zero. */
if (count_forced)
for (insn = forced_labels; insn; insn = XEXP (insn, 1))
if (LABEL_P (XEXP (insn, 0)))
LABEL_NUSES (XEXP (insn, 0))++;
for (insn = forced_labels; insn; insn = insn->next ())
if (LABEL_P (insn->element ()))
LABEL_NUSES (insn->element ())++;
timevar_pop (TV_REBUILD_JUMP);
}

9
gcc/reload1.c
View File

@ -3909,14 +3909,13 @@ set_initial_eh_label_offset (rtx label)
static void
set_initial_label_offsets (void)
{
rtx x;
memset (offsets_known_at, 0, num_labels);
for (x = forced_labels; x; x = XEXP (x, 1))
if (XEXP (x, 0))
set_label_offsets (XEXP (x, 0), NULL, 1);
for (rtx_expr_list *x = forced_labels; x; x = x->next ())
if (x->element ())
set_label_offsets (x->element (), NULL, 1);
for (x = nonlocal_goto_handler_labels; x; x = XEXP (x, 1))
for (rtx x = nonlocal_goto_handler_labels; x; x = XEXP (x, 1))
if (XEXP (x, 0))
set_label_offsets (XEXP (x, 0), NULL, 1);