diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2013-05-13 09:46:53 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2013-05-13 09:46:53 +0200 |
| commit | 3a60f32bdee43dcadac21f4e51ce0c43d7aa84a3 (patch) | |
| tree | cae85acf0ab04899986e663a8d8d8a547e8e19d7 /gcc/tree-ssa-strlen.c | |
| parent | 2710a27af098557e37d3d131fa5a43dbfddab408 (diff) | |
| download | gcc-3a60f32bdee43dcadac21f4e51ce0c43d7aa84a3.zip gcc-3a60f32bdee43dcadac21f4e51ce0c43d7aa84a3.tar.gz gcc-3a60f32bdee43dcadac21f4e51ce0c43d7aa84a3.tar.bz2 | |
re PR tree-optimization/57230 (tree-ssa-strlen incorrectly optimizes a strlen to 0)
PR tree-optimization/57230
* tree-ssa-strlen.c (handle_char_store): Add missing integer_zerop
check.
* gcc.dg/strlenopt-23.c: New test.
From-SVN: r198813
Diffstat (limited to 'gcc/tree-ssa-strlen.c')
| -rw-r--r-- | gcc/tree-ssa-strlen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index bea0c28..4b6cfda 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -1703,7 +1703,7 @@ handle_char_store (gimple_stmt_iterator *gsi) its length may be decreased. */ adjust_last_stmt (si, stmt, false); } - else if (si != NULL) + else if (si != NULL && integer_zerop (gimple_assign_rhs1 (stmt))) { si = unshare_strinfo (si); si->length = build_int_cst (size_type_node, 0); |