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| author | Richard Biener <rguenther@suse.de> | 2020-11-06 09:35:27 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-11-06 11:10:23 +0100 |
| commit | 8ebedfcd86aa5e3fc902fb442ce12c9d440c23c8 (patch) | |
| tree | fc165f379cd0ebcd1c2f4097a8676a535e941f42 /gcc/tree-vect-loop.c | |
| parent | f11b1f9d155bcbd797d0cb06bee2825c70ba9dd4 (diff) | |
| download | gcc-8ebedfcd86aa5e3fc902fb442ce12c9d440c23c8.zip gcc-8ebedfcd86aa5e3fc902fb442ce12c9d440c23c8.tar.gz gcc-8ebedfcd86aa5e3fc902fb442ce12c9d440c23c8.tar.bz2 | |
tree-optimization/97732 - fix init of SLP induction vectorization
This PR exposes two issues - one that the vector builder treats
&x as eligible for VECTOR_CST elements and one that SLP induction
vectorization forgets to convert init elements to the vector
component type which makes a difference for pointer vs. integer.
2020-11-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/97732
* tree-vect-loop.c (vectorizable_induction): Convert the
init elements to the vector component type.
* gimple-fold.c (gimple_build_vector): Use CONSTANT_CLASS_P
rather than TREE_CONSTANT to determine if elements are
eligible for VECTOR_CSTs.
* gcc.dg/vect/bb-slp-pr97732.c: New testcase.
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index ef2ea3d..0ba3754 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -8001,6 +8001,10 @@ vectorizable_induction (loop_vec_info loop_vinfo, { /* The scalar inits of the IVs if not vectorized. */ elt = inits[(ivn*const_nunits + eltn) % group_size]; + if (!useless_type_conversion_p (TREE_TYPE (vectype), + TREE_TYPE (elt))) + elt = gimple_build (&init_stmts, VIEW_CONVERT_EXPR, + TREE_TYPE (vectype), elt); init_elts.quick_push (elt); } /* The number of steps to add to the initial values. */ |