Hi All,
During the refactoring I had passed loop_vinfo on to vect_set_loop_condition
during prolog peeling. This parameter is unused in most cases except for in
vect_set_loop_condition_partial_vectors where it's behaviour depends on whether
loop_vinfo is NULL or not. Apparently this code expect it to be NULL and it
reads the structures from a different location.
This fixes the failing testcase which was not using the lens values determined
earlier in vectorizable_store because it was looking it up in the given
loop_vinfo instead.
Bootstrapped Regtested on aarch64-none-linux-gnu, powerpc64le-unknown-linux-gnu,
x86_64--nonelinux-gnu and no issues. PowerPC test failures are fixed as well.
Ok for master?
Thanks,
Tamar
gcc/ChangeLog:
PR tree-optimization/PR111866
* tree-vect-loop-manip.cc (vect_do_peeling): Pass null as vinfo to
vect_set_loop_condition during prolog peeling.
--- inline copy of patch --
diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc
index
db1d4f867ead5c6079cda3ff0d0870234d11e39d..9c2551261e33738feac71721d4f0160033907260
100644
--- a/gcc/tree-vect-loop-manip.cc
+++ b/gcc/tree-vect-loop-manip.cc
@@ -3235,7 +3235,7 @@ vect_do_peeling (loop_vec_info loop_vinfo, tree niters,
tree nitersm1,
/* Update the number of iterations for prolog loop. */
tree step_prolog = build_one_cst (TREE_TYPE (niters_prolog));
- vect_set_loop_condition (prolog, prolog_e, loop_vinfo, niters_prolog,
+ vect_set_loop_condition (prolog, prolog_e, NULL, niters_prolog,
step_prolog, NULL_TREE, false);
/* Skip the prolog loop. */
--
diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc
index
db1d4f867ead5c6079cda3ff0d0870234d11e39d..9c2551261e33738feac71721d4f0160033907260
100644
--- a/gcc/tree-vect-loop-manip.cc
+++ b/gcc/tree-vect-loop-manip.cc
@@ -3235,7 +3235,7 @@ vect_do_peeling (loop_vec_info loop_vinfo, tree niters,
tree nitersm1,
/* Update the number of iterations for prolog loop. */
tree step_prolog = build_one_cst (TREE_TYPE (niters_prolog));
- vect_set_loop_condition (prolog, prolog_e, loop_vinfo, niters_prolog,
+ vect_set_loop_condition (prolog, prolog_e, NULL, niters_prolog,
step_prolog, NULL_TREE, false);
/* Skip the prolog loop. */
