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| author | Richard Biener <rguenther@suse.de> | 2013-02-18 13:58:21 +0000 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2013-02-18 13:58:21 +0000 |
| commit | 180c42fbf2349e9b416cb722f376fc4c82040331 (patch) | |
| tree | beccd4d1dc09cec46a171d05d656031fa88d162d /gcc/tree-vect-loop.c | |
| parent | b17a5ce5f065b223b176afe76bb49b68039b1238 (diff) | |
2013-02-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/56366
* tree-vect-loop.c (get_initial_def_for_induction): Properly
handle sign-conversion of outer-loop initial induction value.
* gcc.dg/torture/pr56366.c: New testcase.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@196121 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index d4f6bc72451..a2f90138fc9 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -3203,6 +3203,21 @@ get_initial_def_for_induction (gimple iv_phi) tree iv_def = PHI_ARG_DEF_FROM_EDGE (iv_phi, loop_preheader_edge (iv_loop)); vec_init = vect_get_vec_def_for_operand (iv_def, iv_phi, NULL); + /* If the initial value is not of proper type, convert it. */ + if (!useless_type_conversion_p (vectype, TREE_TYPE (vec_init))) + { + new_stmt = gimple_build_assign_with_ops + (VIEW_CONVERT_EXPR, + vect_get_new_vect_var (vectype, vect_simple_var, "vec_iv_"), + build1 (VIEW_CONVERT_EXPR, vectype, vec_init), NULL_TREE); + vec_init = make_ssa_name (gimple_assign_lhs (new_stmt), new_stmt); + gimple_assign_set_lhs (new_stmt, vec_init); + new_bb = gsi_insert_on_edge_immediate (loop_preheader_edge (iv_loop), + new_stmt); + gcc_assert (!new_bb); + set_vinfo_for_stmt (new_stmt, + new_stmt_vec_info (new_stmt, loop_vinfo, NULL)); + } } else { |