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| author | Richard Sandiford <richard.sandiford@arm.com> | 2020-01-09 20:31:31 +0000 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2020-01-15 13:35:51 +0000 |
| commit | 86c3a7d891f9f175d09d61f5ce163c6dc5ce681f (patch) | |
| tree | 48ffe61e9634d24fcde6ee1bdf2d8423d2f431af /gcc/tree-vect-slp.c | |
| parent | affb7b66aa6e08aa19ccec2cc24d166a37d4a556 (diff) | |
Fix type mismatch in SLPed constructors
Having the "same" vector types with different modes means that we can
end up vectorising a constructor with a different mode from the lhs.
This patch adds a VIEW_CONVERT_EXPR in that case.
This showed up on existing tests when testing with fixed-length
-msve-vector-bits=128.
2020-01-15 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-vect-slp.c (vectorize_slp_instance_root_stmt): Use a
VIEW_CONVERT_EXPR if the vectorized constructor has a diffeent
type from the lhs.
Diffstat (limited to 'gcc/tree-vect-slp.c')
| -rw-r--r-- | gcc/tree-vect-slp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index d164937b4b0..cebaa811dd2 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -4307,6 +4307,10 @@ vectorize_slp_instance_root_stmt (slp_tree node, slp_instance instance) { tree vect_lhs = gimple_get_lhs (child_stmt_info->stmt); tree root_lhs = gimple_get_lhs (instance->root_stmt->stmt); + if (!useless_type_conversion_p (TREE_TYPE (root_lhs), + TREE_TYPE (vect_lhs))) + vect_lhs = build1 (VIEW_CONVERT_EXPR, TREE_TYPE (root_lhs), + vect_lhs); rstmt = gimple_build_assign (root_lhs, vect_lhs); break; } |