diff options
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 454 |
1 files changed, 367 insertions, 87 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index b7f9a57..619a651 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -124,8 +124,7 @@ static struct datadep_stats } dependence_stats; static bool subscript_dependence_tester_1 (struct data_dependence_relation *, - struct data_reference *, - struct data_reference *, + unsigned int, unsigned int, struct loop *); /* Returns true iff A divides B. */ @@ -145,6 +144,21 @@ int_divides_p (int a, int b) return ((b % a) == 0); } +/* Return true if reference REF contains a union access. */ + +static bool +ref_contains_union_access_p (tree ref) +{ + while (handled_component_p (ref)) + { + ref = TREE_OPERAND (ref, 0); + if (TREE_CODE (TREE_TYPE (ref)) == UNION_TYPE + || TREE_CODE (TREE_TYPE (ref)) == QUAL_UNION_TYPE) + return true; + } + return false; +} + /* Dump into FILE all the data references from DATAREFS. */ @@ -434,13 +448,14 @@ dump_data_dependence_relation (FILE *outf, unsigned int i; struct loop *loopi; - for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++) + subscript *sub; + FOR_EACH_VEC_ELT (DDR_SUBSCRIPTS (ddr), i, sub) { fprintf (outf, " access_fn_A: "); - print_generic_stmt (outf, DR_ACCESS_FN (dra, i)); + print_generic_stmt (outf, SUB_ACCESS_FN (sub, 0)); fprintf (outf, " access_fn_B: "); - print_generic_stmt (outf, DR_ACCESS_FN (drb, i)); - dump_subscript (outf, DDR_SUBSCRIPT (ddr, i)); + print_generic_stmt (outf, SUB_ACCESS_FN (sub, 1)); + dump_subscript (outf, sub); } fprintf (outf, " inner loop index: %d\n", DDR_INNER_LOOP (ddr)); @@ -920,6 +935,27 @@ dr_analyze_innermost (innermost_loop_behavior *drb, tree ref, return true; } +/* Return true if OP is a valid component reference for a DR access + function. This accepts a subset of what handled_component_p accepts. */ + +static bool +access_fn_component_p (tree op) +{ + switch (TREE_CODE (op)) + { + case REALPART_EXPR: + case IMAGPART_EXPR: + case ARRAY_REF: + return true; + + case COMPONENT_REF: + return TREE_CODE (TREE_TYPE (TREE_OPERAND (op, 0))) == RECORD_TYPE; + + default: + return false; + } +} + /* Determines the base object and the list of indices of memory reference DR, analyzed in LOOP and instantiated in loop nest NEST. */ @@ -957,7 +993,9 @@ dr_analyze_indices (struct data_reference *dr, loop_p nest, loop_p loop) access_fns.safe_push (integer_one_node); } - /* Analyze access functions of dimensions we know to be independent. */ + /* Analyze access functions of dimensions we know to be independent. + The list of component references handled here should be kept in + sync with access_fn_component_p. */ while (handled_component_p (ref)) { if (TREE_CODE (ref) == ARRAY_REF) @@ -2148,6 +2186,38 @@ dr_may_alias_p (const struct data_reference *a, const struct data_reference *b, return refs_may_alias_p (addr_a, addr_b); } +/* REF_A and REF_B both satisfy access_fn_component_p. Return true + if it is meaningful to compare their associated access functions + when checking for dependencies. */ + +static bool +access_fn_components_comparable_p (tree ref_a, tree ref_b) +{ + /* Allow pairs of component refs from the following sets: + + { REALPART_EXPR, IMAGPART_EXPR } + { COMPONENT_REF } + { ARRAY_REF }. */ + tree_code code_a = TREE_CODE (ref_a); + tree_code code_b = TREE_CODE (ref_b); + if (code_a == IMAGPART_EXPR) + code_a = REALPART_EXPR; + if (code_b == IMAGPART_EXPR) + code_b = REALPART_EXPR; + if (code_a != code_b) + return false; + + if (TREE_CODE (ref_a) == COMPONENT_REF) + /* ??? We cannot simply use the type of operand #0 of the refs here as + the Fortran compiler smuggles type punning into COMPONENT_REFs. + Use the DECL_CONTEXT of the FIELD_DECLs instead. */ + return (DECL_CONTEXT (TREE_OPERAND (ref_a, 1)) + == DECL_CONTEXT (TREE_OPERAND (ref_b, 1))); + + return types_compatible_p (TREE_TYPE (TREE_OPERAND (ref_a, 0)), + TREE_TYPE (TREE_OPERAND (ref_b, 0))); +} + /* Initialize a data dependence relation between data accesses A and B. NB_LOOPS is the number of loops surrounding the references: the size of the classic distance/direction vectors. */ @@ -2160,11 +2230,10 @@ initialize_data_dependence_relation (struct data_reference *a, struct data_dependence_relation *res; unsigned int i; - res = XNEW (struct data_dependence_relation); + res = XCNEW (struct data_dependence_relation); DDR_A (res) = a; DDR_B (res) = b; DDR_LOOP_NEST (res).create (0); - DDR_REVERSED_P (res) = false; DDR_SUBSCRIPTS (res).create (0); DDR_DIR_VECTS (res).create (0); DDR_DIST_VECTS (res).create (0); @@ -2182,82 +2251,277 @@ initialize_data_dependence_relation (struct data_reference *a, return res; } - /* The case where the references are exactly the same. */ - if (operand_equal_p (DR_REF (a), DR_REF (b), 0)) + unsigned int num_dimensions_a = DR_NUM_DIMENSIONS (a); + unsigned int num_dimensions_b = DR_NUM_DIMENSIONS (b); + if (num_dimensions_a == 0 || num_dimensions_b == 0) { - if ((loop_nest.exists () - && !object_address_invariant_in_loop_p (loop_nest[0], - DR_BASE_OBJECT (a))) - || DR_NUM_DIMENSIONS (a) == 0) + DDR_ARE_DEPENDENT (res) = chrec_dont_know; + return res; + } + + /* For unconstrained bases, the root (highest-indexed) subscript + describes a variation in the base of the original DR_REF rather + than a component access. We have no type that accurately describes + the new DR_BASE_OBJECT (whose TREE_TYPE describes the type *after* + applying this subscript) so limit the search to the last real + component access. + + E.g. for: + + void + f (int a[][8], int b[][8]) { - DDR_ARE_DEPENDENT (res) = chrec_dont_know; - return res; + for (int i = 0; i < 8; ++i) + a[i * 2][0] = b[i][0]; + } + + the a and b accesses have a single ARRAY_REF component reference [0] + but have two subscripts. */ + if (DR_UNCONSTRAINED_BASE (a)) + num_dimensions_a -= 1; + if (DR_UNCONSTRAINED_BASE (b)) + num_dimensions_b -= 1; + + /* These structures describe sequences of component references in + DR_REF (A) and DR_REF (B). Each component reference is tied to a + specific access function. */ + struct { + /* The sequence starts at DR_ACCESS_FN (A, START_A) of A and + DR_ACCESS_FN (B, START_B) of B (inclusive) and extends to higher + indices. In C notation, these are the indices of the rightmost + component references; e.g. for a sequence .b.c.d, the start + index is for .d. */ + unsigned int start_a; + unsigned int start_b; + + /* The sequence contains LENGTH consecutive access functions from + each DR. */ + unsigned int length; + + /* The enclosing objects for the A and B sequences respectively, + i.e. the objects to which DR_ACCESS_FN (A, START_A + LENGTH - 1) + and DR_ACCESS_FN (B, START_B + LENGTH - 1) are applied. */ + tree object_a; + tree object_b; + } full_seq = {}, struct_seq = {}; + + /* Before each iteration of the loop: + + - REF_A is what you get after applying DR_ACCESS_FN (A, INDEX_A) and + - REF_B is what you get after applying DR_ACCESS_FN (B, INDEX_B). */ + unsigned int index_a = 0; + unsigned int index_b = 0; + tree ref_a = DR_REF (a); + tree ref_b = DR_REF (b); + + /* Now walk the component references from the final DR_REFs back up to + the enclosing base objects. Each component reference corresponds + to one access function in the DR, with access function 0 being for + the final DR_REF and the highest-indexed access function being the + one that is applied to the base of the DR. + + Look for a sequence of component references whose access functions + are comparable (see access_fn_components_comparable_p). If more + than one such sequence exists, pick the one nearest the base + (which is the leftmost sequence in C notation). Store this sequence + in FULL_SEQ. + + For example, if we have: + + struct foo { struct bar s; ... } (*a)[10], (*b)[10]; + + A: a[0][i].s.c.d + B: __real b[0][i].s.e[i].f + + (where d is the same type as the real component of f) then the access + functions would be: + + 0 1 2 3 + A: .d .c .s [i] + + 0 1 2 3 4 5 + B: __real .f [i] .e .s [i] + + The A0/B2 column isn't comparable, since .d is a COMPONENT_REF + and [i] is an ARRAY_REF. However, the A1/B3 column contains two + COMPONENT_REF accesses for struct bar, so is comparable. Likewise + the A2/B4 column contains two COMPONENT_REF accesses for struct foo, + so is comparable. The A3/B5 column contains two ARRAY_REFs that + index foo[10] arrays, so is again comparable. The sequence is + therefore: + + A: [1, 3] (i.e. [i].s.c) + B: [3, 5] (i.e. [i].s.e) + + Also look for sequences of component references whose access + functions are comparable and whose enclosing objects have the same + RECORD_TYPE. Store this sequence in STRUCT_SEQ. In the above + example, STRUCT_SEQ would be: + + A: [1, 2] (i.e. s.c) + B: [3, 4] (i.e. s.e) */ + while (index_a < num_dimensions_a && index_b < num_dimensions_b) + { + /* REF_A and REF_B must be one of the component access types + allowed by dr_analyze_indices. */ + gcc_checking_assert (access_fn_component_p (ref_a)); + gcc_checking_assert (access_fn_component_p (ref_b)); + + /* Get the immediately-enclosing objects for REF_A and REF_B, + i.e. the references *before* applying DR_ACCESS_FN (A, INDEX_A) + and DR_ACCESS_FN (B, INDEX_B). */ + tree object_a = TREE_OPERAND (ref_a, 0); + tree object_b = TREE_OPERAND (ref_b, 0); + + tree type_a = TREE_TYPE (object_a); + tree type_b = TREE_TYPE (object_b); + if (access_fn_components_comparable_p (ref_a, ref_b)) + { + /* This pair of component accesses is comparable for dependence + analysis, so we can include DR_ACCESS_FN (A, INDEX_A) and + DR_ACCESS_FN (B, INDEX_B) in the sequence. */ + if (full_seq.start_a + full_seq.length != index_a + || full_seq.start_b + full_seq.length != index_b) + { + /* The accesses don't extend the current sequence, + so start a new one here. */ + full_seq.start_a = index_a; + full_seq.start_b = index_b; + full_seq.length = 0; + } + + /* Add this pair of references to the sequence. */ + full_seq.length += 1; + full_seq.object_a = object_a; + full_seq.object_b = object_b; + + /* If the enclosing objects are structures (and thus have the + same RECORD_TYPE), record the new sequence in STRUCT_SEQ. */ + if (TREE_CODE (type_a) == RECORD_TYPE) + struct_seq = full_seq; + + /* Move to the next containing reference for both A and B. */ + ref_a = object_a; + ref_b = object_b; + index_a += 1; + index_b += 1; + continue; + } + + /* Try to approach equal type sizes. */ + if (!COMPLETE_TYPE_P (type_a) + || !COMPLETE_TYPE_P (type_b) + || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (type_a)) + || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (type_b))) + break; + + unsigned HOST_WIDE_INT size_a = tree_to_uhwi (TYPE_SIZE_UNIT (type_a)); + unsigned HOST_WIDE_INT size_b = tree_to_uhwi (TYPE_SIZE_UNIT (type_b)); + if (size_a <= size_b) + { + index_a += 1; + ref_a = object_a; + } + if (size_b <= size_a) + { + index_b += 1; + ref_b = object_b; } - DDR_AFFINE_P (res) = true; - DDR_ARE_DEPENDENT (res) = NULL_TREE; - DDR_SUBSCRIPTS (res).create (DR_NUM_DIMENSIONS (a)); - DDR_LOOP_NEST (res) = loop_nest; - DDR_INNER_LOOP (res) = 0; - DDR_SELF_REFERENCE (res) = true; - for (i = 0; i < DR_NUM_DIMENSIONS (a); i++) - { - struct subscript *subscript; - - subscript = XNEW (struct subscript); - SUB_CONFLICTS_IN_A (subscript) = conflict_fn_not_known (); - SUB_CONFLICTS_IN_B (subscript) = conflict_fn_not_known (); - SUB_LAST_CONFLICT (subscript) = chrec_dont_know; - SUB_DISTANCE (subscript) = chrec_dont_know; - DDR_SUBSCRIPTS (res).safe_push (subscript); - } - return res; } - /* If the references do not access the same object, we do not know - whether they alias or not. We do not care about TBAA or alignment - info so we can use OEP_ADDRESS_OF to avoid false negatives. - But the accesses have to use compatible types as otherwise the - built indices would not match. */ - if (!operand_equal_p (DR_BASE_OBJECT (a), DR_BASE_OBJECT (b), OEP_ADDRESS_OF) - || !types_compatible_p (TREE_TYPE (DR_BASE_OBJECT (a)), - TREE_TYPE (DR_BASE_OBJECT (b)))) + /* See whether FULL_SEQ ends at the base and whether the two bases + are equal. We do not care about TBAA or alignment info so we can + use OEP_ADDRESS_OF to avoid false negatives. */ + tree base_a = DR_BASE_OBJECT (a); + tree base_b = DR_BASE_OBJECT (b); + bool same_base_p = (full_seq.start_a + full_seq.length == num_dimensions_a + && full_seq.start_b + full_seq.length == num_dimensions_b + && DR_UNCONSTRAINED_BASE (a) == DR_UNCONSTRAINED_BASE (b) + && operand_equal_p (base_a, base_b, OEP_ADDRESS_OF) + && types_compatible_p (TREE_TYPE (base_a), + TREE_TYPE (base_b)) + && (!loop_nest.exists () + || (object_address_invariant_in_loop_p + (loop_nest[0], base_a)))); + + /* If the bases are the same, we can include the base variation too. + E.g. the b accesses in: + + for (int i = 0; i < n; ++i) + b[i + 4][0] = b[i][0]; + + have a definite dependence distance of 4, while for: + + for (int i = 0; i < n; ++i) + a[i + 4][0] = b[i][0]; + + the dependence distance depends on the gap between a and b. + + If the bases are different then we can only rely on the sequence + rooted at a structure access, since arrays are allowed to overlap + arbitrarily and change shape arbitrarily. E.g. we treat this as + valid code: + + int a[256]; + ... + ((int (*)[4][3]) &a[1])[i][0] += ((int (*)[4][3]) &a[2])[i][0]; + + where two lvalues with the same int[4][3] type overlap, and where + both lvalues are distinct from the object's declared type. */ + if (same_base_p) { - DDR_ARE_DEPENDENT (res) = chrec_dont_know; - return res; + if (DR_UNCONSTRAINED_BASE (a)) + full_seq.length += 1; } + else + full_seq = struct_seq; - /* If the base of the object is not invariant in the loop nest, we cannot - analyze it. TODO -- in fact, it would suffice to record that there may - be arbitrary dependences in the loops where the base object varies. */ - if ((loop_nest.exists () - && !object_address_invariant_in_loop_p (loop_nest[0], DR_BASE_OBJECT (a))) - || DR_NUM_DIMENSIONS (a) == 0) + /* Punt if we didn't find a suitable sequence. */ + if (full_seq.length == 0) { DDR_ARE_DEPENDENT (res) = chrec_dont_know; return res; } - /* If the number of dimensions of the access to not agree we can have - a pointer access to a component of the array element type and an - array access while the base-objects are still the same. Punt. */ - if (DR_NUM_DIMENSIONS (a) != DR_NUM_DIMENSIONS (b)) + if (!same_base_p) { - DDR_ARE_DEPENDENT (res) = chrec_dont_know; - return res; + /* Partial overlap is possible for different bases when strict aliasing + is not in effect. It's also possible if either base involves a union + access; e.g. for: + + struct s1 { int a[2]; }; + struct s2 { struct s1 b; int c; }; + struct s3 { int d; struct s1 e; }; + union u { struct s2 f; struct s3 g; } *p, *q; + + the s1 at "p->f.b" (base "p->f") partially overlaps the s1 at + "p->g.e" (base "p->g") and might partially overlap the s1 at + "q->g.e" (base "q->g"). */ + if (!flag_strict_aliasing + || ref_contains_union_access_p (full_seq.object_a) + || ref_contains_union_access_p (full_seq.object_b)) + { + DDR_ARE_DEPENDENT (res) = chrec_dont_know; + return res; + } + + DDR_COULD_BE_INDEPENDENT_P (res) = true; } DDR_AFFINE_P (res) = true; DDR_ARE_DEPENDENT (res) = NULL_TREE; - DDR_SUBSCRIPTS (res).create (DR_NUM_DIMENSIONS (a)); + DDR_SUBSCRIPTS (res).create (full_seq.length); DDR_LOOP_NEST (res) = loop_nest; DDR_INNER_LOOP (res) = 0; DDR_SELF_REFERENCE (res) = false; - for (i = 0; i < DR_NUM_DIMENSIONS (a); i++) + for (i = 0; i < full_seq.length; ++i) { struct subscript *subscript; subscript = XNEW (struct subscript); + SUB_ACCESS_FN (subscript, 0) = DR_ACCESS_FN (a, full_seq.start_a + i); + SUB_ACCESS_FN (subscript, 1) = DR_ACCESS_FN (b, full_seq.start_b + i); SUB_CONFLICTS_IN_A (subscript) = conflict_fn_not_known (); SUB_CONFLICTS_IN_B (subscript) = conflict_fn_not_known (); SUB_LAST_CONFLICT (subscript) = chrec_dont_know; @@ -3839,14 +4103,15 @@ add_outer_distances (struct data_dependence_relation *ddr, } /* Return false when fail to represent the data dependence as a - distance vector. INIT_B is set to true when a component has been + distance vector. A_INDEX is the index of the first reference + (0 for DDR_A, 1 for DDR_B) and B_INDEX is the index of the + second reference. INIT_B is set to true when a component has been added to the distance vector DIST_V. INDEX_CARRY is then set to the index in DIST_V that carries the dependence. */ static bool build_classic_dist_vector_1 (struct data_dependence_relation *ddr, - struct data_reference *ddr_a, - struct data_reference *ddr_b, + unsigned int a_index, unsigned int b_index, lambda_vector dist_v, bool *init_b, int *index_carry) { @@ -3864,8 +4129,8 @@ build_classic_dist_vector_1 (struct data_dependence_relation *ddr, return false; } - access_fn_a = DR_ACCESS_FN (ddr_a, i); - access_fn_b = DR_ACCESS_FN (ddr_b, i); + access_fn_a = SUB_ACCESS_FN (subscript, a_index); + access_fn_b = SUB_ACCESS_FN (subscript, b_index); if (TREE_CODE (access_fn_a) == POLYNOMIAL_CHREC && TREE_CODE (access_fn_b) == POLYNOMIAL_CHREC) @@ -3925,10 +4190,11 @@ static bool constant_access_functions (const struct data_dependence_relation *ddr) { unsigned i; + subscript *sub; - for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++) - if (!evolution_function_is_constant_p (DR_ACCESS_FN (DDR_A (ddr), i)) - || !evolution_function_is_constant_p (DR_ACCESS_FN (DDR_B (ddr), i))) + FOR_EACH_VEC_ELT (DDR_SUBSCRIPTS (ddr), i, sub) + if (!evolution_function_is_constant_p (SUB_ACCESS_FN (sub, 0)) + || !evolution_function_is_constant_p (SUB_ACCESS_FN (sub, 1))) return false; return true; @@ -3991,10 +4257,11 @@ add_other_self_distances (struct data_dependence_relation *ddr) lambda_vector dist_v; unsigned i; int index_carry = DDR_NB_LOOPS (ddr); + subscript *sub; - for (i = 0; i < DDR_NUM_SUBSCRIPTS (ddr); i++) + FOR_EACH_VEC_ELT (DDR_SUBSCRIPTS (ddr), i, sub) { - tree access_fun = DR_ACCESS_FN (DDR_A (ddr), i); + tree access_fun = SUB_ACCESS_FN (sub, 0); if (TREE_CODE (access_fun) == POLYNOMIAL_CHREC) { @@ -4006,7 +4273,7 @@ add_other_self_distances (struct data_dependence_relation *ddr) return; } - access_fun = DR_ACCESS_FN (DDR_A (ddr), 0); + access_fun = SUB_ACCESS_FN (DDR_SUBSCRIPT (ddr, 0), 0); if (TREE_CODE (CHREC_LEFT (access_fun)) == POLYNOMIAL_CHREC) add_multivariate_self_dist (ddr, access_fun); @@ -4077,6 +4344,23 @@ add_distance_for_zero_overlaps (struct data_dependence_relation *ddr) } } +/* Return true when the DDR contains two data references that have the + same access functions. */ + +static inline bool +same_access_functions (const struct data_dependence_relation *ddr) +{ + unsigned i; + subscript *sub; + + FOR_EACH_VEC_ELT (DDR_SUBSCRIPTS (ddr), i, sub) + if (!eq_evolutions_p (SUB_ACCESS_FN (sub, 0), + SUB_ACCESS_FN (sub, 1))) + return false; + + return true; +} + /* Compute the classic per loop distance vector. DDR is the data dependence relation to build a vector from. Return false when fail to represent the data dependence as a distance vector. */ @@ -4108,8 +4392,7 @@ build_classic_dist_vector (struct data_dependence_relation *ddr, } dist_v = lambda_vector_new (DDR_NB_LOOPS (ddr)); - if (!build_classic_dist_vector_1 (ddr, DDR_A (ddr), DDR_B (ddr), - dist_v, &init_b, &index_carry)) + if (!build_classic_dist_vector_1 (ddr, 0, 1, dist_v, &init_b, &index_carry)) return false; /* Save the distance vector if we initialized one. */ @@ -4142,12 +4425,11 @@ build_classic_dist_vector (struct data_dependence_relation *ddr, if (!lambda_vector_lexico_pos (dist_v, DDR_NB_LOOPS (ddr))) { lambda_vector save_v = lambda_vector_new (DDR_NB_LOOPS (ddr)); - if (!subscript_dependence_tester_1 (ddr, DDR_B (ddr), DDR_A (ddr), - loop_nest)) + if (!subscript_dependence_tester_1 (ddr, 1, 0, loop_nest)) return false; compute_subscript_distance (ddr); - if (!build_classic_dist_vector_1 (ddr, DDR_B (ddr), DDR_A (ddr), - save_v, &init_b, &index_carry)) + if (!build_classic_dist_vector_1 (ddr, 1, 0, save_v, &init_b, + &index_carry)) return false; save_dist_v (ddr, save_v); DDR_REVERSED_P (ddr) = true; @@ -4183,12 +4465,10 @@ build_classic_dist_vector (struct data_dependence_relation *ddr, { lambda_vector opposite_v = lambda_vector_new (DDR_NB_LOOPS (ddr)); - if (!subscript_dependence_tester_1 (ddr, DDR_B (ddr), - DDR_A (ddr), loop_nest)) + if (!subscript_dependence_tester_1 (ddr, 1, 0, loop_nest)) return false; compute_subscript_distance (ddr); - if (!build_classic_dist_vector_1 (ddr, DDR_B (ddr), DDR_A (ddr), - opposite_v, &init_b, + if (!build_classic_dist_vector_1 (ddr, 1, 0, opposite_v, &init_b, &index_carry)) return false; @@ -4267,13 +4547,13 @@ build_classic_dir_vector (struct data_dependence_relation *ddr) } } -/* Helper function. Returns true when there is a dependence between - data references DRA and DRB. */ +/* Helper function. Returns true when there is a dependence between the + data references. A_INDEX is the index of the first reference (0 for + DDR_A, 1 for DDR_B) and B_INDEX is the index of the second reference. */ static bool subscript_dependence_tester_1 (struct data_dependence_relation *ddr, - struct data_reference *dra, - struct data_reference *drb, + unsigned int a_index, unsigned int b_index, struct loop *loop_nest) { unsigned int i; @@ -4285,8 +4565,8 @@ subscript_dependence_tester_1 (struct data_dependence_relation *ddr, { conflict_function *overlaps_a, *overlaps_b; - analyze_overlapping_iterations (DR_ACCESS_FN (dra, i), - DR_ACCESS_FN (drb, i), + analyze_overlapping_iterations (SUB_ACCESS_FN (subscript, a_index), + SUB_ACCESS_FN (subscript, b_index), &overlaps_a, &overlaps_b, &last_conflicts, loop_nest); @@ -4335,7 +4615,7 @@ static void subscript_dependence_tester (struct data_dependence_relation *ddr, struct loop *loop_nest) { - if (subscript_dependence_tester_1 (ddr, DDR_A (ddr), DDR_B (ddr), loop_nest)) + if (subscript_dependence_tester_1 (ddr, 0, 1, loop_nest)) dependence_stats.num_dependence_dependent++; compute_subscript_distance (ddr); |