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Use DR_IS_WRITE instead of !DR_IS_READ. 

2010-09-03  Sebastian Pop  <sebastian.pop@amd.com>

	* tree-data-ref.c (dr_may_alias_p): Replace !DR_IS_READ with
	DR_IS_WRITE.
	(compute_all_dependences): Same.
	(create_rdg_edge_for_ddr): Same.
	* tree-data-ref.h (DR_IS_WRITE): New.
	(ddr_is_anti_dependent): Replace !DR_IS_READ with DR_IS_WRITE.
	* tree-if-conv.c (write_memrefs_written_at_least_once): Same.
	(write_memrefs_written_at_least_once): Same.
	* tree-predcom.c (suitable_component_p): Same.
	(determine_roots_comp): Same.
	(execute_load_motion): Same.
	* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Same.
	(vect_enhance_data_refs_alignment): Same.
	(vect_analyze_group_access): Same.

From-SVN: r163841
This commit is contained in:
Sebastian Pop 2010-09-03 20:05:42 +00:00 committed by Sebastian Pop
parent 0edf45a3f9
commit b0af49c40c
6 changed files with 39 additions and 21 deletions
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17
gcc/ChangeLog
View File

@ -1,3 +1,20 @@
2010-09-03 Sebastian Pop <sebastian.pop@amd.com>
* tree-data-ref.c (dr_may_alias_p): Replace !DR_IS_READ with
DR_IS_WRITE.
(compute_all_dependences): Same.
(create_rdg_edge_for_ddr): Same.
* tree-data-ref.h (DR_IS_WRITE): New.
(ddr_is_anti_dependent): Replace !DR_IS_READ with DR_IS_WRITE.
* tree-if-conv.c (write_memrefs_written_at_least_once): Same.
(write_memrefs_written_at_least_once): Same.
* tree-predcom.c (suitable_component_p): Same.
(determine_roots_comp): Same.
(execute_load_motion): Same.
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Same.
(vect_enhance_data_refs_alignment): Same.
(vect_analyze_group_access): Same.
2010-09-03 Joern Rennecke <joern.rennecke@embecosm.com>
PR testsuite/42843

14
gcc/tree-data-ref.c
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@ -1335,12 +1335,12 @@ dr_may_alias_p (const struct data_reference *a, const struct data_reference *b)
return false;
/* Query the alias oracle. */
if (!DR_IS_READ (a) && !DR_IS_READ (b))
if (DR_IS_WRITE (a) && DR_IS_WRITE (b))
{
if (!refs_output_dependent_p (DR_REF (a), DR_REF (b)))
return false;
}
else if (DR_IS_READ (a) && !DR_IS_READ (b))
else if (DR_IS_READ (a) && DR_IS_WRITE (b))
{
if (!refs_anti_dependent_p (DR_REF (a), DR_REF (b)))
return false;
@ -1372,7 +1372,7 @@ dr_may_alias_p (const struct data_reference *a, const struct data_reference *b)
decl_b = SSA_NAME_VAR (addr_b);
if (TYPE_RESTRICT (type_a) && TYPE_RESTRICT (type_b)
&& (!DR_IS_READ (a) || !DR_IS_READ (b))
&& (DR_IS_WRITE (a) || DR_IS_WRITE (b))
&& decl_a && DECL_P (decl_a)
&& decl_b && DECL_P (decl_b)
&& decl_a != decl_b
@ -4107,7 +4107,7 @@ compute_all_dependences (VEC (data_reference_p, heap) *datarefs,
FOR_EACH_VEC_ELT (data_reference_p, datarefs, i, a)
for (j = i + 1; VEC_iterate (data_reference_p, datarefs, j, b); j++)
if (!DR_IS_READ (a) || !DR_IS_READ (b) || compute_self_and_rr)
if (DR_IS_WRITE (a) || DR_IS_WRITE (b) || compute_self_and_rr)
{
ddr = initialize_data_dependence_relation (a, b, loop_nest);
VEC_safe_push (ddr_p, heap, *dependence_relations, ddr);
@ -4772,11 +4772,11 @@ create_rdg_edge_for_ddr (struct graph *rdg, ddr_p ddr)
/* Determines the type of the data dependence. */
if (DR_IS_READ (dra) && DR_IS_READ (drb))
RDGE_TYPE (e) = input_dd;
else if (!DR_IS_READ (dra) && !DR_IS_READ (drb))
else if (DR_IS_WRITE (dra) && DR_IS_WRITE (drb))
RDGE_TYPE (e) = output_dd;
else if (!DR_IS_READ (dra) && DR_IS_READ (drb))
else if (DR_IS_WRITE (dra) && DR_IS_READ (drb))
RDGE_TYPE (e) = flow_dd;
else if (DR_IS_READ (dra) && !DR_IS_READ (drb))
else if (DR_IS_READ (dra) && DR_IS_WRITE (drb))
RDGE_TYPE (e) = anti_dd;
}

3
gcc/tree-data-ref.h
View File

@ -193,6 +193,7 @@ struct data_reference
#define DR_ACCESS_FN(DR, I) VEC_index (tree, DR_ACCESS_FNS (DR), I)
#define DR_NUM_DIMENSIONS(DR) VEC_length (tree, DR_ACCESS_FNS (DR))
#define DR_IS_READ(DR) (DR)->is_read
#define DR_IS_WRITE(DR) (!DR_IS_READ (DR))
#define DR_BASE_ADDRESS(DR) (DR)->innermost.base_address
#define DR_OFFSET(DR) (DR)->innermost.offset
#define DR_INIT(DR) (DR)->innermost.init
@ -473,7 +474,7 @@ ddr_is_anti_dependent (ddr_p ddr)
{
return (DDR_ARE_DEPENDENT (ddr) == NULL_TREE
&& DR_IS_READ (DDR_A (ddr))
&& !DR_IS_READ (DDR_B (ddr))
&& DR_IS_WRITE (DDR_B (ddr))
&& !same_access_functions (ddr));
}

4
gcc/tree-if-conv.c
View File

@ -533,7 +533,7 @@ write_memrefs_written_at_least_once (gimple stmt,
for (i = 0; VEC_iterate (data_reference_p, drs, i, a); i++)
if (DR_STMT (a) == stmt
&& !DR_IS_READ (a))
&& DR_IS_WRITE (a))
{
bool found = false;
int x = DR_WRITTEN_AT_LEAST_ONCE (a);
@ -546,7 +546,7 @@ write_memrefs_written_at_least_once (gimple stmt,
for (j = 0; VEC_iterate (data_reference_p, drs, j, b); j++)
if (DR_STMT (b) != stmt
&& !DR_IS_READ (b)
&& DR_IS_WRITE (b)
&& same_data_refs_base_objects (a, b))
{
tree cb = bb_predicate (gimple_bb (DR_STMT (b)));

8
gcc/tree-predcom.c
View File

@ -829,7 +829,7 @@ suitable_component_p (struct loop *loop, struct component *comp)
gcc_assert (dominated_by_p (CDI_DOMINATORS, ba, bp));
bp = ba;
if (!DR_IS_READ (a->ref))
if (DR_IS_WRITE (a->ref))
has_write = true;
}
@ -1197,7 +1197,7 @@ determine_roots_comp (struct loop *loop,
FOR_EACH_VEC_ELT (dref, comp->refs, i, a)
{
if (!chain || !DR_IS_READ (a->ref)
if (!chain || DR_IS_WRITE (a->ref)
|| double_int_ucmp (uhwi_to_double_int (MAX_DISTANCE),
double_int_sub (a->offset, last_ofs)) <= 0)
{
@ -1611,7 +1611,7 @@ execute_load_motion (struct loop *loop, chain_p chain, bitmap tmp_vars)
gcc_assert (chain->type == CT_INVARIANT);
gcc_assert (!chain->combined);
FOR_EACH_VEC_ELT (dref, chain->refs, i, a)
if (!DR_IS_READ (a->ref))
if (DR_IS_WRITE (a->ref))
n_writes++;
/* If there are no reads in the loop, there is nothing to do. */
@ -1627,7 +1627,7 @@ execute_load_motion (struct loop *loop, chain_p chain, bitmap tmp_vars)
bool is_read = DR_IS_READ (a->ref);
mark_virtual_ops_for_renaming (a->stmt);
if (!DR_IS_READ (a->ref))
if (DR_IS_WRITE (a->ref))
{
n_writes--;
if (n_writes)

14
gcc/tree-vect-data-refs.c
View File

@ -614,7 +614,7 @@ vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr,
}
/* We do not vectorize basic blocks with write-write dependencies. */
if (!DR_IS_READ (dra) && !DR_IS_READ (drb))
if (DR_IS_WRITE (dra) && DR_IS_WRITE (drb))
return true;
/* We deal with read-write dependencies in basic blocks later (by
@ -641,7 +641,7 @@ vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr,
}
/* Do not vectorize basic blcoks with write-write dependences. */
if (!DR_IS_READ (dra) && !DR_IS_READ (drb))
if (DR_IS_WRITE (dra) && DR_IS_WRITE (drb))
return true;
/* Check if this dependence is allowed in basic block vectorization. */
@ -1553,7 +1553,7 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo)
dr0 = dr;
}
if (!first_store && !DR_IS_READ (dr))
if (!first_store && DR_IS_WRITE (dr))
first_store = dr;
}
@ -1565,7 +1565,7 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo)
if (!supportable_dr_alignment)
{
dr0 = dr;
if (!first_store && !DR_IS_READ (dr))
if (!first_store && DR_IS_WRITE (dr))
first_store = dr;
}
}
@ -2078,7 +2078,7 @@ vect_analyze_group_access (struct data_reference *dr)
DR_INIT (STMT_VINFO_DATA_REF (
vinfo_for_stmt (next)))))
{
if (!DR_IS_READ (data_ref))
if (DR_IS_WRITE (data_ref))
{
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "Two store stmts share the same dr.");
@ -2123,7 +2123,7 @@ vect_analyze_group_access (struct data_reference *dr)
{
/* FORNOW: SLP of accesses with gaps is not supported. */
slp_impossible = true;
if (!DR_IS_READ (data_ref))
if (DR_IS_WRITE (data_ref))
{
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "interleaved store with gaps");
@ -2215,7 +2215,7 @@ vect_analyze_group_access (struct data_reference *dr)
/* SLP: create an SLP data structure for every interleaving group of
stores for further analysis in vect_analyse_slp. */
if (!DR_IS_READ (dr) && !slp_impossible)
if (DR_IS_WRITE (dr) && !slp_impossible)
{
if (loop_vinfo)
VEC_safe_push (gimple, heap, LOOP_VINFO_STRIDED_STORES (loop_vinfo),