tree-ssa-pre.c (bitmap_remove_from_set): Rename to...
2017-10-23 Richard Biener <rguenther@suse.de> * tree-ssa-pre.c (bitmap_remove_from_set): Rename to... (bitmap_remove_expr_from_set): ... this. All callers call this for non-constant values. (bitmap_set_subtract): Rename to... (bitmap_set_subtract_expressions): ... this. Adjust and optimize. (bitmap_set_contains_value): Remove superfluous check. (bitmap_set_replace_value): Inline into single caller ... (bitmap_value_replace_in_set): ... here and simplify. (dependent_clean): Merge into ... (clean): ... this using an overload. Adjust. (prune_clobbered_mems): Adjust. (compute_antic_aux): Likewise. (compute_partial_antic_aux): Likewise. From-SVN: r254007
This commit is contained in:
parent
2de9164b45
commit
9c71c00f17
|
@ -1,3 +1,20 @@
|
|||
2017-10-23 Richard Biener <rguenther@suse.de>
|
||||
|
||||
* tree-ssa-pre.c (bitmap_remove_from_set): Rename to...
|
||||
(bitmap_remove_expr_from_set): ... this. All callers call this
|
||||
for non-constant values.
|
||||
(bitmap_set_subtract): Rename to...
|
||||
(bitmap_set_subtract_expressions): ... this. Adjust and
|
||||
optimize.
|
||||
(bitmap_set_contains_value): Remove superfluous check.
|
||||
(bitmap_set_replace_value): Inline into single caller ...
|
||||
(bitmap_value_replace_in_set): ... here and simplify.
|
||||
(dependent_clean): Merge into ...
|
||||
(clean): ... this using an overload. Adjust.
|
||||
(prune_clobbered_mems): Adjust.
|
||||
(compute_antic_aux): Likewise.
|
||||
(compute_partial_antic_aux): Likewise.
|
||||
|
||||
2017-10-23 Richard Biener <rguenther@suse.de>
|
||||
|
||||
PR tree-optimization/82129
|
||||
|
|
|
@ -719,14 +719,11 @@ sccvn_valnum_from_value_id (unsigned int val)
|
|||
/* Remove an expression EXPR from a bitmapped set. */
|
||||
|
||||
static void
|
||||
bitmap_remove_from_set (bitmap_set_t set, pre_expr expr)
|
||||
bitmap_remove_expr_from_set (bitmap_set_t set, pre_expr expr)
|
||||
{
|
||||
unsigned int val = get_expr_value_id (expr);
|
||||
if (!value_id_constant_p (val))
|
||||
{
|
||||
bitmap_clear_bit (&set->values, val);
|
||||
bitmap_clear_bit (&set->expressions, get_expression_id (expr));
|
||||
}
|
||||
bitmap_clear_bit (&set->values, val);
|
||||
bitmap_clear_bit (&set->expressions, get_expression_id (expr));
|
||||
}
|
||||
|
||||
/* Insert an expression EXPR into a bitmapped set. */
|
||||
|
@ -802,7 +799,7 @@ sorted_array_from_bitmap_set (bitmap_set_t set)
|
|||
/* Subtract all expressions contained in ORIG from DEST. */
|
||||
|
||||
static bitmap_set_t
|
||||
bitmap_set_subtract (bitmap_set_t dest, bitmap_set_t orig)
|
||||
bitmap_set_subtract_expressions (bitmap_set_t dest, bitmap_set_t orig)
|
||||
{
|
||||
bitmap_set_t result = bitmap_set_new ();
|
||||
bitmap_iterator bi;
|
||||
|
@ -833,15 +830,15 @@ bitmap_set_subtract_values (bitmap_set_t a, bitmap_set_t b)
|
|||
{
|
||||
if (to_remove)
|
||||
{
|
||||
bitmap_remove_from_set (a, to_remove);
|
||||
bitmap_remove_expr_from_set (a, to_remove);
|
||||
to_remove = NULL;
|
||||
}
|
||||
pre_expr expr = expression_for_id (i);
|
||||
if (bitmap_set_contains_value (b, get_expr_value_id (expr)))
|
||||
if (bitmap_bit_p (&b->values, get_expr_value_id (expr)))
|
||||
to_remove = expr;
|
||||
}
|
||||
if (to_remove)
|
||||
bitmap_remove_from_set (a, to_remove);
|
||||
bitmap_remove_expr_from_set (a, to_remove);
|
||||
}
|
||||
|
||||
|
||||
|
@ -853,9 +850,6 @@ bitmap_set_contains_value (bitmap_set_t set, unsigned int value_id)
|
|||
if (value_id_constant_p (value_id))
|
||||
return true;
|
||||
|
||||
if (!set || bitmap_empty_p (&set->expressions))
|
||||
return false;
|
||||
|
||||
return bitmap_bit_p (&set->values, value_id);
|
||||
}
|
||||
|
||||
|
@ -865,44 +859,6 @@ bitmap_set_contains_expr (bitmap_set_t set, const pre_expr expr)
|
|||
return bitmap_bit_p (&set->expressions, get_expression_id (expr));
|
||||
}
|
||||
|
||||
/* Replace an instance of value LOOKFOR with expression EXPR in SET. */
|
||||
|
||||
static void
|
||||
bitmap_set_replace_value (bitmap_set_t set, unsigned int lookfor,
|
||||
const pre_expr expr)
|
||||
{
|
||||
bitmap exprset;
|
||||
unsigned int i;
|
||||
bitmap_iterator bi;
|
||||
|
||||
if (value_id_constant_p (lookfor))
|
||||
return;
|
||||
|
||||
if (!bitmap_set_contains_value (set, lookfor))
|
||||
return;
|
||||
|
||||
/* The number of expressions having a given value is usually
|
||||
significantly less than the total number of expressions in SET.
|
||||
Thus, rather than check, for each expression in SET, whether it
|
||||
has the value LOOKFOR, we walk the reverse mapping that tells us
|
||||
what expressions have a given value, and see if any of those
|
||||
expressions are in our set. For large testcases, this is about
|
||||
5-10x faster than walking the bitmap. If this is somehow a
|
||||
significant lose for some cases, we can choose which set to walk
|
||||
based on the set size. */
|
||||
exprset = value_expressions[lookfor];
|
||||
EXECUTE_IF_SET_IN_BITMAP (exprset, 0, i, bi)
|
||||
{
|
||||
if (bitmap_clear_bit (&set->expressions, i))
|
||||
{
|
||||
bitmap_set_bit (&set->expressions, get_expression_id (expr));
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
gcc_unreachable ();
|
||||
}
|
||||
|
||||
/* Return true if two bitmap sets are equal. */
|
||||
|
||||
static bool
|
||||
|
@ -918,9 +874,33 @@ static void
|
|||
bitmap_value_replace_in_set (bitmap_set_t set, pre_expr expr)
|
||||
{
|
||||
unsigned int val = get_expr_value_id (expr);
|
||||
if (value_id_constant_p (val))
|
||||
return;
|
||||
|
||||
if (bitmap_set_contains_value (set, val))
|
||||
bitmap_set_replace_value (set, val, expr);
|
||||
{
|
||||
/* The number of expressions having a given value is usually
|
||||
significantly less than the total number of expressions in SET.
|
||||
Thus, rather than check, for each expression in SET, whether it
|
||||
has the value LOOKFOR, we walk the reverse mapping that tells us
|
||||
what expressions have a given value, and see if any of those
|
||||
expressions are in our set. For large testcases, this is about
|
||||
5-10x faster than walking the bitmap. If this is somehow a
|
||||
significant lose for some cases, we can choose which set to walk
|
||||
based on the set size. */
|
||||
unsigned int i;
|
||||
bitmap_iterator bi;
|
||||
bitmap exprset = value_expressions[val];
|
||||
EXECUTE_IF_SET_IN_BITMAP (exprset, 0, i, bi)
|
||||
{
|
||||
if (bitmap_clear_bit (&set->expressions, i))
|
||||
{
|
||||
bitmap_set_bit (&set->expressions, get_expression_id (expr));
|
||||
return;
|
||||
}
|
||||
}
|
||||
gcc_unreachable ();
|
||||
}
|
||||
else
|
||||
bitmap_insert_into_set (set, expr);
|
||||
}
|
||||
|
@ -1979,14 +1959,12 @@ valid_in_sets (bitmap_set_t set1, bitmap_set_t set2, pre_expr expr)
|
|||
}
|
||||
}
|
||||
|
||||
/* Clean the set of expressions that are no longer valid in SET1 or
|
||||
SET2. This means expressions that are made up of values we have no
|
||||
leaders for in SET1 or SET2. This version is used for partial
|
||||
anticipation, which means it is not valid in either ANTIC_IN or
|
||||
PA_IN. */
|
||||
/* Clean the set of expressions SET1 that are no longer valid in SET1 or SET2.
|
||||
This means expressions that are made up of values we have no leaders for
|
||||
in SET1 or SET2. */
|
||||
|
||||
static void
|
||||
dependent_clean (bitmap_set_t set1, bitmap_set_t set2)
|
||||
clean (bitmap_set_t set1, bitmap_set_t set2 = NULL)
|
||||
{
|
||||
vec<pre_expr> exprs = sorted_array_from_bitmap_set (set1);
|
||||
pre_expr expr;
|
||||
|
@ -1995,26 +1973,7 @@ dependent_clean (bitmap_set_t set1, bitmap_set_t set2)
|
|||
FOR_EACH_VEC_ELT (exprs, i, expr)
|
||||
{
|
||||
if (!valid_in_sets (set1, set2, expr))
|
||||
bitmap_remove_from_set (set1, expr);
|
||||
}
|
||||
exprs.release ();
|
||||
}
|
||||
|
||||
/* Clean the set of expressions that are no longer valid in SET. This
|
||||
means expressions that are made up of values we have no leaders for
|
||||
in SET. */
|
||||
|
||||
static void
|
||||
clean (bitmap_set_t set)
|
||||
{
|
||||
vec<pre_expr> exprs = sorted_array_from_bitmap_set (set);
|
||||
pre_expr expr;
|
||||
int i;
|
||||
|
||||
FOR_EACH_VEC_ELT (exprs, i, expr)
|
||||
{
|
||||
if (!valid_in_sets (set, NULL, expr))
|
||||
bitmap_remove_from_set (set, expr);
|
||||
bitmap_remove_expr_from_set (set1, expr);
|
||||
}
|
||||
exprs.release ();
|
||||
}
|
||||
|
@ -2034,7 +1993,7 @@ prune_clobbered_mems (bitmap_set_t set, basic_block block)
|
|||
/* Remove queued expr. */
|
||||
if (to_remove)
|
||||
{
|
||||
bitmap_remove_from_set (set, to_remove);
|
||||
bitmap_remove_expr_from_set (set, to_remove);
|
||||
to_remove = NULL;
|
||||
}
|
||||
|
||||
|
@ -2069,7 +2028,7 @@ prune_clobbered_mems (bitmap_set_t set, basic_block block)
|
|||
|
||||
/* Remove queued expr. */
|
||||
if (to_remove)
|
||||
bitmap_remove_from_set (set, to_remove);
|
||||
bitmap_remove_expr_from_set (set, to_remove);
|
||||
}
|
||||
|
||||
static sbitmap has_abnormal_preds;
|
||||
|
@ -2206,11 +2165,11 @@ compute_antic_aux (basic_block block, bool block_has_abnormal_pred_edge)
|
|||
prune_clobbered_mems (ANTIC_OUT, block);
|
||||
|
||||
/* Generate ANTIC_OUT - TMP_GEN. */
|
||||
S = bitmap_set_subtract (ANTIC_OUT, TMP_GEN (block));
|
||||
S = bitmap_set_subtract_expressions (ANTIC_OUT, TMP_GEN (block));
|
||||
|
||||
/* Start ANTIC_IN with EXP_GEN - TMP_GEN. */
|
||||
ANTIC_IN (block) = bitmap_set_subtract (EXP_GEN (block),
|
||||
TMP_GEN (block));
|
||||
ANTIC_IN (block) = bitmap_set_subtract_expressions (EXP_GEN (block),
|
||||
TMP_GEN (block));
|
||||
|
||||
/* Then union in the ANTIC_OUT - TMP_GEN values,
|
||||
to get ANTIC_OUT U EXP_GEN - TMP_GEN */
|
||||
|
@ -2254,8 +2213,7 @@ compute_antic_aux (basic_block block, bool block_has_abnormal_pred_edge)
|
|||
else if succs(BLOCK) == 1 then
|
||||
PA_OUT[BLOCK] = phi_translate (PA_IN[succ(BLOCK)])
|
||||
|
||||
PA_IN[BLOCK] = dependent_clean(PA_OUT[BLOCK] - TMP_GEN[BLOCK]
|
||||
- ANTIC_IN[BLOCK])
|
||||
PA_IN[BLOCK] = clean(PA_OUT[BLOCK] - TMP_GEN[BLOCK] - ANTIC_IN[BLOCK])
|
||||
|
||||
*/
|
||||
static void
|
||||
|
@ -2348,7 +2306,7 @@ compute_partial_antic_aux (basic_block block,
|
|||
|
||||
/* PA_IN starts with PA_OUT - TMP_GEN.
|
||||
Then we subtract things from ANTIC_IN. */
|
||||
PA_IN (block) = bitmap_set_subtract (PA_OUT, TMP_GEN (block));
|
||||
PA_IN (block) = bitmap_set_subtract_expressions (PA_OUT, TMP_GEN (block));
|
||||
|
||||
/* For partial antic, we want to put back in the phi results, since
|
||||
we will properly avoid making them partially antic over backedges. */
|
||||
|
@ -2358,7 +2316,7 @@ compute_partial_antic_aux (basic_block block,
|
|||
/* PA_IN[block] = PA_IN[block] - ANTIC_IN[block] */
|
||||
bitmap_set_subtract_values (PA_IN (block), ANTIC_IN (block));
|
||||
|
||||
dependent_clean (PA_IN (block), ANTIC_IN (block));
|
||||
clean (PA_IN (block), ANTIC_IN (block));
|
||||
|
||||
maybe_dump_sets:
|
||||
if (dump_file && (dump_flags & TDF_DETAILS))
|
||||
|
|
Loading…
Reference in New Issue