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pr 33870
authordnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 13 Nov 2007 15:20:40 +0000 (15:20 +0000)
committerdnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 13 Nov 2007 15:20:40 +0000 (15:20 +0000)
commit18346ecd861dc66e71dafe48ff216cfa4dc95a21
treeb04ec56bade931807b6ed40c6d251c05aa588f0b
parent62e369b3a7e2a62037d4b22f55f96530b76bb9f8
pr 33870
* tree.h (strcut tree_memory_tag): add field unpartitionable.
remove field in_nested_struct.
(struct tree_struct_field_tag): add field nesting_level.
(sft_in_nested_struct): remove.
(sft_nesting_level): define.
(sft_unpartitionable_p): define.
* tree-ssa-alias.c (mem_sym_score): if mp->var is not
partitionable, return long_max.
(compute_memory_partitions): do not partition sfts marked
unpartitionable.
(create_sft): add argument nesting_level.  set
sft_nesting_level with it.  update all users.
(create_overlap_variables_for): show nesting level.
* tree-dfa.c (dump_subvars_for): likewise.
(dump_variable): likewise.
show whether the sft is partitionable or not.
* tree-flow.h (struct fieldoff): remove field
in_nested_struct.
add field nesting_level.
* tree-ssa-structalias.c (struct variable_info): remove
field in_nested_struct.
(push_fields_onto_fieldstack): add argument
nesting_level.  update all users.
update documentation.
update pair->nesting_level with nesting_level.
make recursive calls with nesting_level + 1.
(set_uids_in_ptset): if an sft is added to the points-to
set, mark it as unpartitionable.
* tree-ssa-operands.c (ref_nesting_level): new.
(add_vars_for_offset): call it.
add argument full_ref.  update
callers.
if var is inside a nested structure and the nesting level
of full_ref is lower than the nesting level of var,
adjust offset by the offset of var.

testsuite/ChangeLog

PR 33870
* gcc.c-torture/execute/pr33870-1.c: New test.
* gcc.dg/tree-ssa/alias-16.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130141 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.c-torture/execute/pr33870-1.c [new file with mode: 0644]
gcc/testsuite/gcc.dg/tree-ssa/alias-16.c [new file with mode: 0644]
gcc/tree-dfa.c
gcc/tree-flow.h
gcc/tree-ssa-alias.c
gcc/tree-ssa-operands.c
gcc/tree-ssa-structalias.c
gcc/tree.h