OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

combine.c (record_truncated_value): Turn from being a for_each_rtx callback to a function that takes an rtx and... 

gcc/
	* combine.c (record_truncated_value): Turn from being a for_each_rtx
	callback to a function that takes an rtx and returns a bool
	(record_truncated_values): Use FOR_EACH_SUBRTX_VAR instead of
	for_each_rtx.

From-SVN: r214624
This commit is contained in:
Richard Sandiford 2014-08-28 06:22:12 +00:00 committed by Richard Sandiford
parent 1ecb5b94a1
commit 46bbda0375
2 changed files with 22 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2014-08-28 Richard Sandiford <rdsandiford@googlemail.com>
* combine.c (record_truncated_value): Turn from being a for_each_rtx
callback to a function that takes an rtx and returns a bool
(record_truncated_values): Use FOR_EACH_SUBRTX_VAR instead of
for_each_rtx.
2014-08-28 Richard Sandiford <rdsandiford@googlemail.com>
* combine.c: Include rtl-iter.h.

29
gcc/combine.c
View File

@ -471,7 +471,6 @@ static void distribute_links (struct insn_link *);
static void mark_used_regs_combine (rtx);
static void record_promoted_value (rtx_insn *, rtx);
static bool unmentioned_reg_p (rtx, rtx);
static int record_truncated_value (rtx *, void *);
static void record_truncated_values (rtx *, void *);
static bool reg_truncated_to_mode (enum machine_mode, const_rtx);
static rtx gen_lowpart_or_truncate (enum machine_mode, rtx);
@ -12502,15 +12501,14 @@ reg_truncated_to_mode (enum machine_mode mode, const_rtx x)
return false;
}
/* Callback for for_each_rtx. If *P is a hard reg or a subreg record the mode
that the register is accessed in. For non-TRULY_NOOP_TRUNCATION targets we
might be able to turn a truncate into a subreg using this information.
Return -1 if traversing *P is complete or 0 otherwise. */
/* If X is a hard reg or a subreg record the mode that the register is
accessed in. For non-TRULY_NOOP_TRUNCATION targets we might be able
to turn a truncate into a subreg using this information. Return true
if traversing X is complete. */
static int
record_truncated_value (rtx *p, void *data ATTRIBUTE_UNUSED)
static bool
record_truncated_value (rtx x)
{
rtx x = *p;
enum machine_mode truncated_mode;
reg_stat_type *rsp;
@ -12520,10 +12518,10 @@ record_truncated_value (rtx *p, void *data ATTRIBUTE_UNUSED)
truncated_mode = GET_MODE (x);
if (GET_MODE_SIZE (original_mode) <= GET_MODE_SIZE (truncated_mode))
return -1;
return true;
if (TRULY_NOOP_TRUNCATION_MODES_P (truncated_mode, original_mode))
return -1;
return true;
x = SUBREG_REG (x);
}
@ -12532,7 +12530,7 @@ record_truncated_value (rtx *p, void *data ATTRIBUTE_UNUSED)
else if (REG_P (x) && REGNO (x) < FIRST_PSEUDO_REGISTER)
truncated_mode = GET_MODE (x);
else
return 0;
return false;
rsp = &reg_stat[REGNO (x)];
if (rsp->truncated_to_mode == 0
@ -12544,7 +12542,7 @@ record_truncated_value (rtx *p, void *data ATTRIBUTE_UNUSED)
rsp->truncation_label = label_tick;
}
return -1;
return true;
}
/* Callback for note_uses. Find hardregs and subregs of pseudos and
@ -12552,9 +12550,12 @@ record_truncated_value (rtx *p, void *data ATTRIBUTE_UNUSED)
SUBREGs. */
static void
record_truncated_values (rtx *x, void *data ATTRIBUTE_UNUSED)
record_truncated_values (rtx *loc, void *data ATTRIBUTE_UNUSED)
{
for_each_rtx (x, record_truncated_value, NULL);
subrtx_var_iterator::array_type array;
FOR_EACH_SUBRTX_VAR (iter, array, *loc, NONCONST)
if (record_truncated_value (*iter))
iter.skip_subrtxes ();
}
/* Scan X for promoted SUBREGs. For each one found,