https://gcc.gnu.org/g:71be87055548cf942c7bc56d10ffd479db8569e4
commit r16-2259-g71be87055548cf942c7bc56d10ffd479db8569e4
Author: Richard Biener <rguent...@suse.de>
Date: Mon Jul 14 14:09:28 2025 +0200
tree-optimization/121059 - fixup loop mask query
When we opportunistically mask an operand of a AND with an already
available loop mask we need to query that set with the correct number
of masks we expect.
PR tree-optimization/121059
* tree-vect-stmts.cc (vectorizable_operation): Query
scalar_cond_masked_set with the correct number of masks.
* gcc.dg/vect/pr121059.c: New testcase.
Co-Authored-By: Richard Sandiford <richard.sandif...@arm.com>
Diff:
---
gcc/testsuite/gcc.dg/vect/pr121059.c | 24 ++++++++++++++++++++++++
gcc/tree-vect-stmts.cc | 7 +++----
2 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/gcc/testsuite/gcc.dg/vect/pr121059.c
b/gcc/testsuite/gcc.dg/vect/pr121059.c
new file mode 100644
index 000000000000..2bbfcead86da
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr121059.c
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-O3 --param vect-partial-vector-usage=1" } */
+/* { dg-additional-options "-march=x86-64-v4" { target avx512f } } */
+
+typedef struct {
+ long left, right, top, bottom;
+} MngBox;
+typedef struct {
+ MngBox object_clip[6];
+ char exists[256], frozen[];
+} MngReadInfo;
+MngReadInfo mng_info;
+
+long ReadMNGImage_i;
+
+void ReadMNGImage(int ReadMNGImage_i)
+{
+ for (; ReadMNGImage_i < 256; ReadMNGImage_i++)
+ if (mng_info.exists[ReadMNGImage_i] && mng_info.frozen[ReadMNGImage_i])
+ mng_info.object_clip[ReadMNGImage_i].left =
+ mng_info.object_clip[ReadMNGImage_i].right =
+ mng_info.object_clip[ReadMNGImage_i].top =
+ mng_info.object_clip[ReadMNGImage_i].bottom = 0;
+}
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 4aa69da2218b..e2dcfaa7a1fc 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -6705,7 +6705,6 @@ vectorizable_operation (vec_info *vinfo,
poly_uint64 nunits_in;
poly_uint64 nunits_out;
tree vectype_out;
- int vec_num;
int i;
vec<tree> vec_oprnds0 = vNULL;
vec<tree> vec_oprnds1 = vNULL;
@@ -6877,7 +6876,7 @@ vectorizable_operation (vec_info *vinfo,
/* Multiple types in SLP are handled by creating the appropriate number of
vectorized stmts for each SLP node. */
- vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node);
+ auto vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node);
/* Reject attempts to combine mask types with nonmask types, e.g. if
we have an AND between a (nonmask) boolean loaded from memory and
@@ -7229,7 +7228,7 @@ vectorizable_operation (vec_info *vinfo,
&& code == BIT_AND_EXPR
&& VECTOR_BOOLEAN_TYPE_P (vectype))
{
- if (loop_vinfo->scalar_cond_masked_set.contains ({ op0, 1 }))
+ if (loop_vinfo->scalar_cond_masked_set.contains ({ op0, vec_num
}))
{
mask = vect_get_loop_mask (loop_vinfo, gsi, masks,
vec_num, vectype, i);
@@ -7238,7 +7237,7 @@ vectorizable_operation (vec_info *vinfo,
vop0, gsi);
}
- if (loop_vinfo->scalar_cond_masked_set.contains ({ op1, 1 }))
+ if (loop_vinfo->scalar_cond_masked_set.contains ({ op1, vec_num
}))
{
mask = vect_get_loop_mask (loop_vinfo, gsi, masks,
vec_num, vectype, i);
