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Diffstat (limited to 'gcc/dce.c')
-rw-r--r--gcc/dce.c106
1 files changed, 51 insertions, 55 deletions
diff --git a/gcc/dce.c b/gcc/dce.c
index 0e245779fcd..a11a4d8ea5a 100644
--- a/gcc/dce.c
+++ b/gcc/dce.c
@@ -96,6 +96,7 @@ deletable_insn_p (rtx insn, bool fast, bitmap arg_stores)
{
rtx body, x;
int i;
+ df_ref def;
if (CALL_P (insn)
/* We cannot delete calls inside of the recursive dce because
@@ -121,9 +122,9 @@ deletable_insn_p (rtx insn, bool fast, bitmap arg_stores)
return false;
/* If INSN sets a global_reg, leave it untouched. */
- for (df_ref *def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++)
- if (HARD_REGISTER_NUM_P (DF_REF_REGNO (*def_rec))
- && global_regs[DF_REF_REGNO (*def_rec)])
+ FOR_EACH_INSN_DEF (def, insn)
+ if (HARD_REGISTER_NUM_P (DF_REF_REGNO (def))
+ && global_regs[DF_REF_REGNO (def)])
return false;
body = PATTERN (insn);
@@ -305,18 +306,18 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
sp + offset. */
if (!fast)
{
- df_ref *use_rec;
+ df_ref use;
struct df_link *defs;
rtx set;
- for (use_rec = DF_INSN_USES (call_insn); *use_rec; use_rec++)
- if (rtx_equal_p (addr, DF_REF_REG (*use_rec)))
+ FOR_EACH_INSN_USE (use, call_insn)
+ if (rtx_equal_p (addr, DF_REF_REG (use)))
break;
- if (*use_rec == NULL)
+ if (use == NULL)
return false;
- for (defs = DF_REF_CHAIN (*use_rec); defs; defs = defs->next)
+ for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
if (! DF_REF_IS_ARTIFICIAL (defs->ref))
break;
@@ -364,15 +365,15 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
}
if (addr != stack_pointer_rtx)
{
- df_ref *use_rec;
+ df_ref use;
struct df_link *defs;
rtx set;
- for (use_rec = DF_INSN_USES (call_insn); *use_rec; use_rec++)
- if (rtx_equal_p (addr, DF_REF_REG (*use_rec)))
+ FOR_EACH_INSN_USE (use, call_insn)
+ if (rtx_equal_p (addr, DF_REF_REG (use)))
break;
- for (defs = DF_REF_CHAIN (*use_rec); defs; defs = defs->next)
+ for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
if (! DF_REF_IS_ARTIFICIAL (defs->ref))
break;
@@ -429,18 +430,18 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
break;
if (!fast)
{
- df_ref *use_rec;
+ df_ref use;
struct df_link *defs;
rtx set;
- for (use_rec = DF_INSN_USES (insn); *use_rec; use_rec++)
- if (rtx_equal_p (addr, DF_REF_REG (*use_rec)))
+ FOR_EACH_INSN_USE (use, insn)
+ if (rtx_equal_p (addr, DF_REF_REG (use)))
break;
- if (*use_rec == NULL)
+ if (use == NULL)
break;
- for (defs = DF_REF_CHAIN (*use_rec); defs; defs = defs->next)
+ for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
if (! DF_REF_IS_ARTIFICIAL (defs->ref))
break;
@@ -496,10 +497,10 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
static void
remove_reg_equal_equiv_notes_for_defs (rtx insn)
{
- df_ref *def_rec;
+ df_ref def;
- for (def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++)
- remove_reg_equal_equiv_notes_for_regno (DF_REF_REGNO (*def_rec));
+ FOR_EACH_INSN_DEF (def, insn)
+ remove_reg_equal_equiv_notes_for_regno (DF_REF_REGNO (def));
}
/* Scan all BBs for debug insns and reset those that reference values
@@ -515,11 +516,10 @@ reset_unmarked_insns_debug_uses (void)
FOR_BB_INSNS_REVERSE_SAFE (bb, insn, next)
if (DEBUG_INSN_P (insn))
{
- df_ref *use_rec;
+ df_ref use;
- for (use_rec = DF_INSN_USES (insn); *use_rec; use_rec++)
+ FOR_EACH_INSN_USE (use, insn)
{
- df_ref use = *use_rec;
struct df_link *defs;
for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
{
@@ -661,16 +661,13 @@ mark_artificial_uses (void)
{
basic_block bb;
struct df_link *defs;
- df_ref *use_rec;
+ df_ref use;
FOR_ALL_BB_FN (bb, cfun)
- {
- for (use_rec = df_get_artificial_uses (bb->index);
- *use_rec; use_rec++)
- for (defs = DF_REF_CHAIN (*use_rec); defs; defs = defs->next)
- if (! DF_REF_IS_ARTIFICIAL (defs->ref))
- mark_insn (DF_REF_INSN (defs->ref), false);
- }
+ FOR_EACH_ARTIFICIAL_USE (use, bb->index)
+ for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
+ if (!DF_REF_IS_ARTIFICIAL (defs->ref))
+ mark_insn (DF_REF_INSN (defs->ref), false);
}
@@ -680,14 +677,13 @@ static void
mark_reg_dependencies (rtx insn)
{
struct df_link *defs;
- df_ref *use_rec;
+ df_ref use;
if (DEBUG_INSN_P (insn))
return;
- for (use_rec = DF_INSN_USES (insn); *use_rec; use_rec++)
+ FOR_EACH_INSN_USE (use, insn)
{
- df_ref use = *use_rec;
if (dump_file)
{
fprintf (dump_file, "Processing use of ");
@@ -868,14 +864,14 @@ word_dce_process_block (basic_block bb, bool redo_out,
FOR_BB_INSNS_REVERSE (bb, insn)
if (DEBUG_INSN_P (insn))
{
- df_ref *use_rec;
- for (use_rec = DF_INSN_USES (insn); *use_rec; use_rec++)
- if (DF_REF_REGNO (*use_rec) >= FIRST_PSEUDO_REGISTER
- && (GET_MODE_SIZE (GET_MODE (DF_REF_REAL_REG (*use_rec)))
+ df_ref use;
+ FOR_EACH_INSN_USE (use, insn)
+ if (DF_REF_REGNO (use) >= FIRST_PSEUDO_REGISTER
+ && (GET_MODE_SIZE (GET_MODE (DF_REF_REAL_REG (use)))
== 2 * UNITS_PER_WORD)
- && !bitmap_bit_p (local_live, 2 * DF_REF_REGNO (*use_rec))
- && !bitmap_bit_p (local_live, 2 * DF_REF_REGNO (*use_rec) + 1))
- dead_debug_add (&debug, *use_rec, DF_REF_REGNO (*use_rec));
+ && !bitmap_bit_p (local_live, 2 * DF_REF_REGNO (use))
+ && !bitmap_bit_p (local_live, 2 * DF_REF_REGNO (use) + 1))
+ dead_debug_add (&debug, use, DF_REF_REGNO (use));
}
else if (INSN_P (insn))
{
@@ -898,10 +894,10 @@ word_dce_process_block (basic_block bb, bool redo_out,
death. */
if (debug.used && !bitmap_empty_p (debug.used))
{
- df_ref *def_rec;
+ df_ref def;
- for (def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++)
- dead_debug_insert_temp (&debug, DF_REF_REGNO (*def_rec), insn,
+ FOR_EACH_INSN_DEF (def, insn)
+ dead_debug_insert_temp (&debug, DF_REF_REGNO (def), insn,
marked_insn_p (insn)
&& !control_flow_insn_p (insn)
? DEBUG_TEMP_AFTER_WITH_REG_FORCE
@@ -939,7 +935,7 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au,
bitmap local_live = BITMAP_ALLOC (&dce_tmp_bitmap_obstack);
rtx insn;
bool block_changed;
- df_ref *def_rec;
+ df_ref def;
struct dead_debug_local debug;
if (redo_out)
@@ -969,11 +965,11 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au,
FOR_BB_INSNS_REVERSE (bb, insn)
if (DEBUG_INSN_P (insn))
{
- df_ref *use_rec;
- for (use_rec = DF_INSN_USES (insn); *use_rec; use_rec++)
- if (!bitmap_bit_p (local_live, DF_REF_REGNO (*use_rec))
- && !bitmap_bit_p (au, DF_REF_REGNO (*use_rec)))
- dead_debug_add (&debug, *use_rec, DF_REF_REGNO (*use_rec));
+ df_ref use;
+ FOR_EACH_INSN_USE (use, insn)
+ if (!bitmap_bit_p (local_live, DF_REF_REGNO (use))
+ && !bitmap_bit_p (au, DF_REF_REGNO (use)))
+ dead_debug_add (&debug, use, DF_REF_REGNO (use));
}
else if (INSN_P (insn))
{
@@ -981,9 +977,9 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au,
/* The insn is needed if there is someone who uses the output. */
if (!needed)
- for (def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++)
- if (bitmap_bit_p (local_live, DF_REF_REGNO (*def_rec))
- || bitmap_bit_p (au, DF_REF_REGNO (*def_rec)))
+ FOR_EACH_INSN_DEF (def, insn)
+ if (bitmap_bit_p (local_live, DF_REF_REGNO (def))
+ || bitmap_bit_p (au, DF_REF_REGNO (def)))
{
needed = true;
mark_insn (insn, true);
@@ -1004,8 +1000,8 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au,
was marked, in case the debug use was after the point of
death. */
if (debug.used && !bitmap_empty_p (debug.used))
- for (def_rec = DF_INSN_DEFS (insn); *def_rec; def_rec++)
- dead_debug_insert_temp (&debug, DF_REF_REGNO (*def_rec), insn,
+ FOR_EACH_INSN_DEF (def, insn)
+ dead_debug_insert_temp (&debug, DF_REF_REGNO (def), insn,
needed && !control_flow_insn_p (insn)
? DEBUG_TEMP_AFTER_WITH_REG_FORCE
: DEBUG_TEMP_BEFORE_WITH_VALUE);
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