public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r12-6422] tree-optimization/103948 - detect vector vec_cmp in expand_vector_condition
@ 2022-01-10 19:40 Uros Bizjak
0 siblings, 0 replies; only message in thread
From: Uros Bizjak @ 2022-01-10 19:40 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:de0faa56a10406b50fba159957e3a3fd2f95c64b
commit r12-6422-gde0faa56a10406b50fba159957e3a3fd2f95c64b
Author: Uros Bizjak <ubizjak@gmail.com>
Date: Mon Jan 10 20:39:35 2022 +0100
tree-optimization/103948 - detect vector vec_cmp in expand_vector_condition
Currently, expand_vector_condition detects only vcondMN and vconduMN
named RTX patterns. Teach it to also consider vec_cmpMN and vec_cmpuMN
RTX patterns when all ones vector is returned for true and all zeros vector
is returned for false.
2022-01-10 Richard Biener <rguenther@suse.de>
gcc/ChangeLog:
PR tree-optimization/103948
* tree-vect-generic.c (expand_vector_condition): Return true if
all ones vector is returned for true, all zeros vector for false
and the target defines corresponding vec_cmp{,u}MN named RTX pattern.
Diff:
---
gcc/tree-vect-generic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index 6afb6999cd7..5814a71a5bb 100644
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -1052,7 +1052,9 @@ expand_vector_condition (gimple_stmt_iterator *gsi, bitmap dce_ssa_names)
}
}
- if (expand_vec_cond_expr_p (type, TREE_TYPE (a1), code))
+ if (expand_vec_cond_expr_p (type, TREE_TYPE (a1), code)
+ || (integer_all_onesp (b) && integer_zerop (c)
+ && expand_vec_cmp_expr_p (type, TREE_TYPE (a1), code)))
{
gcc_assert (TREE_CODE (a) == SSA_NAME || TREE_CODE (a) == VECTOR_CST);
return true;
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-01-10 19:40 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-10 19:40 [gcc r12-6422] tree-optimization/103948 - detect vector vec_cmp in expand_vector_condition Uros Bizjak
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).