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| author | Richard Biener <rguenther@suse.de> | 2020-05-28 10:27:48 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-05-28 11:54:50 +0200 |
| commit | 09df85393ce5501a28359d159670fd05c4d70abf (patch) | |
| tree | b5125015fe545cbfcc2d80521283d8a69823abfa /gcc/tree-vect-stmts.c | |
| parent | dd019ef07358602a444f3e63f848aaece5c280f4 (diff) | |
| download | gcc-09df85393ce5501a28359d159670fd05c4d70abf.zip gcc-09df85393ce5501a28359d159670fd05c4d70abf.tar.gz gcc-09df85393ce5501a28359d159670fd05c4d70abf.tar.bz2 | |
tree-optimization/95273 - more vectorizable_shift massaging
Covering all bases in vectorizable_shift is hard - this makes sure
to appropriately handle the case of PR95356 without breaking others.
2020-05-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/95273
PR tree-optimization/95356
* tree-vect-stmts.c (vectorizable_shift): Adjust when and to
what we set the vector type of the shift operand SLP node
again.
* gcc.target/i386/pr95356.c: New testcase.
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index 2f92bb5..ff335aa 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -5792,7 +5792,11 @@ vectorizable_shift (vec_info *vinfo, if (slp_node && (!vect_maybe_update_slp_op_vectype (slp_op0, vectype) || (!scalar_shift_arg - && !vect_maybe_update_slp_op_vectype (slp_op1, vectype)))) + && (!incompatible_op1_vectype_p + || dt[1] == vect_constant_def) + && !vect_maybe_update_slp_op_vectype + (slp_op1, + incompatible_op1_vectype_p ? vectype : op1_vectype)))) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, |