diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-01-14 14:30:33 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-01-14 14:30:33 +0000 |
| commit | 03c253f34520658a02d13362e24ea6217d379179 (patch) | |
| tree | 97912e34de2d72cef706a4b2d7ff6e7a163b3439 /gcc/params.def | |
| parent | 0f81d1b1db2329f88deb03f1ca4c1bf6476d23d8 (diff) | |
| download | gcc-03c253f34520658a02d13362e24ea6217d379179.tar.gz | |
2006-01-14 Richard Guenther <rguenther@suse.de>
PR tree-optimization/22548
PR tree-optimization/22555
PR tree-optimization/22501
* Makefile.in (tree-ssa-structalias.o): Depend on $(PARAMS_H).
* params.def (salias-max-array-elements): New parameter.
* params.h (SALIAS_MAX_ARRAY_ELEMENTS): Define.
* doc/invoke.texi (salias-max-array-elements): Document.
* tree-flow-inline.h (var_can_have_subvars): We also handle
arrays now.
* tree-ssa-alias.c (find_used_portions): Handle ARRAY_REF like
COMPONENT_REF.
* tree-ssa-structalias.c (params.h): Include.
(push_fields_onto_fieldstack): Handle ARRAY_TYPE.
(find_func_aliases): Handle multiple constraints from ARRAY_REF.
(get_constraint_for): For ADDR_EXPR operating on something
containing an ARRAY_REF, add all subvars to the solution.
(handle_ptr_arith): Handle ARRAY_TYPE like RECORD_TYPE types.
* tree-ssa-operands.c (parse_ssa_operands): Handle ARRAY_REF
for creating MUST_DEFs.
(get_expr_operands): Treat ARRAY_REF like COMPONENT_REF wrt subvars.
* gcc.dg/tree-ssa/alias-4.c: New testcase.
* gcc.dg/tree-ssa/alias-5.c: Likewise.
* gcc.dg/tree-ssa/alias-6.c: Likewise.
* gcc.dg/tree-ssa/alias-7.c: Likewise.
* gcc.dg/tree-ssa/alias-8.c: Likewise.
* gcc.dg/tree-ssa/alias-9.c: Likewise.
* gcc.dg/tree-ssa/alias-10.c: Likewise.
* gcc.dg/tree-ssa/alias-11.c: Likewise.
* gcc.dg/tree-ssa/alias-12.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109703 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/params.def b/gcc/params.def index 7690383e12b..33fa4441cde 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -47,7 +47,14 @@ DEFPARAM (PARAM_SALIAS_MAX_IMPLICIT_FIELDS, "salias-max-implicit-fields", "The maximum number of fields in a structure variable without direct structure accesses that GCC will attempt to track separately", 5, 0, 0) - + +/* The maximum number of array elements structure aliasing will decompose + an array for. The default is 4. */ +DEFPARAM (PARAM_SALIAS_MAX_ARRAY_ELEMENTS, + "salias-max-array-elements", + "The maximum number of elements in an array for wich we track its elements separately", + 4, 0, 0) + /* The maximum structure size at which the scalar replacement of aggregates (SRA) pass will perform block copies. The default value, 0, implies that GCC will select the most appropriate size |