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| author | Richard Guenther <rguenther@suse.de> | 2005-07-27 11:15:32 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2005-07-27 11:15:32 +0000 |
| commit | c11b02311a08b854236e9798abbcb8ad5ee64801 (patch) | |
| tree | 499a49f46ba444c4803938d2d0509e5a563ef429 /gcc | |
| parent | 093c23292726ecdf18dccf87f042ea2b03270792 (diff) | |
| download | gcc-c11b02311a08b854236e9798abbcb8ad5ee64801.zip gcc-c11b02311a08b854236e9798abbcb8ad5ee64801.tar.gz gcc-c11b02311a08b854236e9798abbcb8ad5ee64801.tar.bz2 | |
tree-ssa-structalias.c (push_fields_onto_fieldstack): Avoid pushing again if current struct contains only fields we decomposed.
2005-07-27 Richard Guenther <rguenther@suse.de>
* tree-ssa-structalias.c (push_fields_onto_fieldstack):
Avoid pushing again if current struct contains only
fields we decomposed.
* gcc.dg/tree-ssa/salias-1.c: New testcase.
From-SVN: r102424
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/salias-1.c | 19 | ||||
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 5 |
4 files changed, 33 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d975412..a300071 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-07-27 Richard Guenther <rguenther@suse.de> + + * tree-ssa-structalias.c (push_fields_onto_fieldstack): + Avoid pushing again if current struct contains only + fields we decomposed. + 2005-07-27 Jan Hubicka <jh@suse.cz> PR tree-optimization/22574 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 14426f6..60889ca 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2005-07-27 Richard Guenther <rguenther@suse.de> + + * gcc.dg/tree-ssa/salias-1.c: New testcase. + 2005-07-27 Volker Reichelt <reichelt@igpm.rwth-aachen.de> PR fortran/22503 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c b/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c new file mode 100644 index 0000000..9933cc8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c @@ -0,0 +1,19 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-salias" } */ + +struct { + struct { + struct { + int i, j; + } c; + } b; +} a; + +int foo(void) +{ + a.b.c.i = 0; + return a.b.c.j; +} + +/* { dg-final { scan-tree-dump-times "SFT" 2 "salias" } } */ +/* { dg-final { cleanup-tree-dump "salias" } } */ diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 76ce7ab..b01e9e7 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -2972,6 +2972,7 @@ push_fields_onto_fieldstack (tree type, VEC(fieldoff_s,heap) **fieldstack, if (TREE_CODE (field) == FIELD_DECL) { bool push = false; + int pushed = 0; if (has_union && (TREE_CODE (TREE_TYPE (field)) == QUAL_UNION_TYPE @@ -2980,7 +2981,7 @@ push_fields_onto_fieldstack (tree type, VEC(fieldoff_s,heap) **fieldstack, if (!var_can_have_subvars (field)) push = true; - else if (!(push_fields_onto_fieldstack + else if (!(pushed = push_fields_onto_fieldstack (TREE_TYPE (field), fieldstack, offset + bitpos_of_field (field), has_union)) && DECL_SIZE (field) @@ -2999,6 +3000,8 @@ push_fields_onto_fieldstack (tree type, VEC(fieldoff_s,heap) **fieldstack, pair->offset = offset + bitpos_of_field (field); count++; } + else + count += pushed; } return count; |