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| author | Marc Glisse <marc.glisse@inria.fr> | 2013-10-25 14:35:51 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2013-10-25 12:35:51 +0000 |
| commit | bb362135e2d0fa4bf0290d0b403a3c1fc591da9e (patch) | |
| tree | c7bd71aba38c9fb4a911f81de0767b37d0035766 /gcc/tree-ssa-alias.c | |
| parent | 447f3223806b2e90f4b13ad934063fdea4768cdb (diff) | |
| download | gcc-bb362135e2d0fa4bf0290d0b403a3c1fc591da9e.zip gcc-bb362135e2d0fa4bf0290d0b403a3c1fc591da9e.tar.gz gcc-bb362135e2d0fa4bf0290d0b403a3c1fc591da9e.tar.bz2 | |
tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Look for an ADDR_EXPR in the defining statement.
2013-10-25 Marc Glisse <marc.glisse@inria.fr>
gcc/
* tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Look for an
ADDR_EXPR in the defining statement.
gcc/testsuite/
* gcc.dg/tree-ssa/alias-23.c: New file.
From-SVN: r204065
Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 2fdd3d7..5d3c792 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -568,6 +568,14 @@ ao_ref_init_from_ptr_and_size (ao_ref *ref, tree ptr, tree size) { HOST_WIDE_INT t1, t2; ref->ref = NULL_TREE; + if (TREE_CODE (ptr) == SSA_NAME) + { + gimple stmt = SSA_NAME_DEF_STMT (ptr); + if (gimple_assign_single_p (stmt) + && gimple_assign_rhs_code (stmt) == ADDR_EXPR) + ptr = gimple_assign_rhs1 (stmt); + } + if (TREE_CODE (ptr) == ADDR_EXPR) ref->base = get_ref_base_and_extent (TREE_OPERAND (ptr, 0), &ref->offset, &t1, &t2); |