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| author | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-17 21:30:23 +0000 |
|---|---|---|
| committer | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-17 21:30:23 +0000 |
| commit | eac34d04970c0b0ceaaa267f8c586ada702839be (patch) | |
| tree | 6785cb84202c00e716d03fe97bfca3a1951193dd | |
| parent | da43203c00f22e28d5a496ea502f8a3fce46e39c (diff) | |
| download | gcc-eac34d04970c0b0ceaaa267f8c586ada702839be.tar.gz | |
PR tree-optimization/17319
* tree-ssa-alias.c (compute_points_to_and_addr_escape): Also
examine pointers on the LHS of an assignment.
(collect_points_to_info_r): Handle RETURN_EXPR.
testsuite/ChangeLog
PR tree-optimization/17319
* gcc.dg/pr17319.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87673 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr17319.c | 12 | ||||
| -rw-r--r-- | gcc/tree-ssa-alias.c | 9 |
4 files changed, 33 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 70a193ca095..ad206dea5da 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2004-09-17 Diego Novillo <dnovillo@redhat.com> + + PR tree-optimization/17319 + * tree-ssa-alias.c (compute_points_to_and_addr_escape): Also + examine pointers on the LHS of an assignment. + (collect_points_to_info_r): Handle RETURN_EXPR. + 2004-09-17 Jeff Law <law@redhat.com> * tree-ssa-dom.c (const_and_copies_stack): New. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index db4d92d86da..815bbbf7995 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2004-09-17 Diego Novillo <dnovillo@redhat.com> + + PR tree-optimization/17319 + * gcc.dg/pr17319.c: New test. + 2004-09-17 Devang Patel <dpatel@apple.com> * gcc.dg/20040813-1.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr17319.c b/gcc/testsuite/gcc.dg/pr17319.c new file mode 100644 index 00000000000..5d39e4c5707 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr17319.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-dce" } */ + +typedef unsigned long long HARD_REG_ELT_TYPE; +typedef HARD_REG_ELT_TYPE HARD_REG_SET[2]; +static HARD_REG_SET newpat_used_regs; +int try_combine (void) +{ + HARD_REG_ELT_TYPE *scan_tp_ = newpat_used_regs; + scan_tp_[0] = 0; + scan_tp_[1] = 0; +} diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index d30dc38d637..2fe4069c3c0 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -694,6 +694,9 @@ compute_points_to_and_addr_escape (struct alias_info *ai) bitmap_set_bit (ai->written_vars, ann->uid); if (may_be_aliased (var)) (VARRAY_UINT (ai->num_references, ann->uid))++; + + if (POINTER_TYPE_P (TREE_TYPE (op))) + collect_points_to_info_for (ai, op); } /* Mark variables in V_MAY_DEF operands as being written to. */ @@ -1831,6 +1834,12 @@ collect_points_to_info_r (tree var, tree stmt, void *data) switch (TREE_CODE (stmt)) { + case RETURN_EXPR: + if (TREE_CODE (TREE_OPERAND (stmt, 0)) != MODIFY_EXPR) + abort (); + stmt = TREE_OPERAND (stmt, 0); + /* FALLTHRU */ + case MODIFY_EXPR: { tree rhs = TREE_OPERAND (stmt, 1); |