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-rw-r--r--gcc/df-problems.c94
1 files changed, 33 insertions, 61 deletions
diff --git a/gcc/df-problems.c b/gcc/df-problems.c
index d650d0ba415..d572b0f73b9 100644
--- a/gcc/df-problems.c
+++ b/gcc/df-problems.c
@@ -44,13 +44,12 @@ along with GCC; see the file COPYING3. If not see
#include "except.h"
#include "dce.h"
#include "vecprim.h"
+#include "dumpfile.h"
/* Note that turning REG_DEAD_DEBUGGING on will cause
gcc.c-torture/unsorted/dump-noaddr.c to fail because it prints
addresses in the dumps. */
-#if 0
-#define REG_DEAD_DEBUGGING
-#endif
+#define REG_DEAD_DEBUGGING 0
#define DF_SPARSE_THRESHOLD 32
@@ -2712,7 +2711,7 @@ df_note_alloc (bitmap all_blocks ATTRIBUTE_UNUSED)
df_note->optional_p = true;
}
-#ifdef REG_DEAD_DEBUGGING
+/* This is only used if REG_DEAD_DEBUGGING is in effect. */
static void
df_print_note (const char *prefix, rtx insn, rtx note)
{
@@ -2723,7 +2722,6 @@ df_print_note (const char *prefix, rtx insn, rtx note)
fprintf (dump_file, "\n");
}
}
-#endif
/* After reg-stack, the x86 floating point stack regs are difficult to
@@ -2772,9 +2770,8 @@ df_kill_notes (rtx insn, bitmap live)
else
{
rtx next = XEXP (link, 1);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("deleting: ", insn, link);
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("deleting: ", insn, link);
free_EXPR_LIST_node (link);
*pprev = link = next;
}
@@ -2791,9 +2788,8 @@ df_kill_notes (rtx insn, bitmap live)
else
{
rtx next = XEXP (link, 1);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("deleting: ", insn, link);
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("deleting: ", insn, link);
free_EXPR_LIST_node (link);
*pprev = link = next;
}
@@ -2825,9 +2821,8 @@ df_kill_notes (rtx insn, bitmap live)
if (deleted)
{
rtx next;
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("deleting: ", insn, link);
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("deleting: ", insn, link);
next = XEXP (link, 1);
free_EXPR_LIST_node (link);
*pprev = link = next;
@@ -2900,11 +2895,9 @@ df_set_unused_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
{
unsigned int r;
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
fprintf (dump_file, "mw_set_unused looking at mws[%d..%d]\n",
mws->start_regno, mws->end_regno);
-#endif
if (df_whole_mw_reg_unused_p (mws, live, artificial_uses))
{
@@ -2912,9 +2905,9 @@ df_set_unused_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
df_set_note (REG_UNUSED, insn, mws->mw_reg);
dead_debug_insert_temp (debug, regno, insn, DEBUG_TEMP_AFTER_WITH_REG);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 1: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 1: ", insn, REG_NOTES (insn));
+
bitmap_set_bit (do_not_gen, regno);
/* Only do this if the value is totally dead. */
}
@@ -2926,9 +2919,8 @@ df_set_unused_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
{
df_set_note (REG_UNUSED, insn, regno_reg_rtx[r]);
dead_debug_insert_temp (debug, r, insn, DEBUG_TEMP_AFTER_WITH_REG);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 2: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 2: ", insn, REG_NOTES (insn));
}
bitmap_set_bit (do_not_gen, r);
}
@@ -2978,8 +2970,7 @@ df_set_dead_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
*added_notes_p = false;
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
{
fprintf (dump_file, "mw_set_dead looking at mws[%d..%d]\n do_not_gen =",
mws->start_regno, mws->end_regno);
@@ -2989,7 +2980,6 @@ df_set_dead_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
fprintf (dump_file, " artificial uses =");
df_print_regset (dump_file, artificial_uses);
}
-#endif
if (df_whole_mw_reg_dead_p (mws, live, artificial_uses, do_not_gen))
{
@@ -3000,9 +2990,8 @@ df_set_dead_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
}
/* Add a dead note for the entire multi word register. */
df_set_note (REG_DEAD, insn, mws->mw_reg);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 1: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 1: ", insn, REG_NOTES (insn));
}
else
{
@@ -3017,9 +3006,8 @@ df_set_dead_notes_for_mw (rtx insn, struct df_mw_hardreg *mws,
return;
}
df_set_note (REG_DEAD, insn, regno_reg_rtx[r]);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 2: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 2: ", insn, REG_NOTES (insn));
}
}
return;
@@ -3036,13 +3024,11 @@ df_create_unused_note (rtx insn, df_ref def,
{
unsigned int dregno = DF_REF_REGNO (def);
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
{
fprintf (dump_file, " regular looking at def ");
df_ref_debug (def, dump_file);
}
-#endif
if (!((DF_REF_FLAGS (def) & DF_REF_MW_HARDREG)
|| bitmap_bit_p (live, dregno)
@@ -3053,9 +3039,8 @@ df_create_unused_note (rtx insn, df_ref def,
? *DF_REF_REAL_LOC (def): DF_REF_REG (def);
df_set_note (REG_UNUSED, insn, reg);
dead_debug_insert_temp (debug, dregno, insn, DEBUG_TEMP_AFTER_WITH_REG);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 3: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 3: ", insn, REG_NOTES (insn));
}
return;
@@ -3387,23 +3372,20 @@ df_note_bb_compute (unsigned int bb_index,
bitmap_copy (live, df_get_live_out (bb));
bitmap_clear (artificial_uses);
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
{
fprintf (dump_file, "live at bottom ");
df_print_regset (dump_file, live);
}
-#endif
/* Process the artificial defs and uses at the bottom of the block
to begin processing. */
for (def_rec = df_get_artificial_defs (bb_index); *def_rec; def_rec++)
{
df_ref def = *def_rec;
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+
+ if (REG_DEAD_DEBUGGING && dump_file)
fprintf (dump_file, "artificial def %d\n", DF_REF_REGNO (def));
-#endif
if ((DF_REF_FLAGS (def) & DF_REF_AT_TOP) == 0)
bitmap_clear_bit (live, DF_REF_REGNO (def));
@@ -3423,13 +3405,11 @@ df_note_bb_compute (unsigned int bb_index,
}
}
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
{
fprintf (dump_file, "live before artificials out ");
df_print_regset (dump_file, live);
}
-#endif
FOR_BB_INSNS_REVERSE (bb, insn)
{
@@ -3448,13 +3428,12 @@ df_note_bb_compute (unsigned int bb_index,
/* Process the defs. */
if (CALL_P (insn))
{
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
+ if (REG_DEAD_DEBUGGING && dump_file)
{
fprintf (dump_file, "processing call %d\n live =", INSN_UID (insn));
df_print_regset (dump_file, live);
}
-#endif
+
/* We only care about real sets for calls. Clobbers cannot
be depended on to really die. */
mws_rec = DF_INSN_UID_MWS (uid);
@@ -3541,13 +3520,12 @@ df_note_bb_compute (unsigned int bb_index,
df_ref use = *use_rec;
unsigned int uregno = DF_REF_REGNO (use);
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file && !debug_insn)
+ if (REG_DEAD_DEBUGGING && dump_file && !debug_insn)
{
fprintf (dump_file, " regular looking at use ");
df_ref_debug (use, dump_file);
}
-#endif
+
if (!bitmap_bit_p (live, uregno))
{
if (debug_insn)
@@ -3578,9 +3556,8 @@ df_note_bb_compute (unsigned int bb_index,
? *DF_REF_REAL_LOC (use) : DF_REF_REG (use);
df_set_note (REG_DEAD, insn, reg);
-#ifdef REG_DEAD_DEBUGGING
- df_print_note ("adding 4: ", insn, REG_NOTES (insn));
-#endif
+ if (REG_DEAD_DEBUGGING)
+ df_print_note ("adding 4: ", insn, REG_NOTES (insn));
}
/* This register is now live. */
bitmap_set_bit (live, uregno);
@@ -3612,11 +3589,6 @@ df_note_compute (bitmap all_blocks)
bitmap_initialize (&do_not_gen, &df_bitmap_obstack);
bitmap_initialize (&artificial_uses, &df_bitmap_obstack);
-#ifdef REG_DEAD_DEBUGGING
- if (dump_file)
- print_rtl_with_bb (dump_file, get_insns());
-#endif
-
EXECUTE_IF_SET_IN_BITMAP (all_blocks, 0, bb_index, bi)
{
df_note_bb_compute (bb_index, &live, &do_not_gen, &artificial_uses);
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