Hi,
This patch fixes an issue introduced by
g:2f482a07365d9f4a94a56edd13b7f01b8f78b5a0, where a subtype was beeing
passed to vect_widened_op_tree, when no subtype was to be used. This
lead to an errorneous use of IFN_VEC_WIDEN_MINUS.
gcc/ChangeLog:
* tree-vect-patterns.cc (vect_recog_widen_op_pattern): Don't
pass subtype to
vect_widened_op_tree and remove subtype parameter.
(vect_recog_widen_plus_pattern): Remove subtype parameter and
dont pass to call to
vect_recog_widen_op_pattern.
(vect_recog_widen_minus_pattern): Likewise.
gcc/testsuite/ChangeLog:
* gcc.dg/vect/pr110142.c: New test.
diff --git a/gcc/testsuite/gcc.dg/vect/pr110142.c
b/gcc/testsuite/gcc.dg/vect/pr110142.c
new file mode 100644
index
0000000000000000000000000000000000000000..a88dbe400f46a33a53649298345c24c569e2f567
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr110142.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-O3" } */
+void test(short *x, unsigned short *y, int n)
+{
+ for (int i = 0; i < n; i++)
+ x[i] = (y[i] - x[i]) >> 1;
+}
+
+/* { dg-final { scan-tree-dump-not "widen_minus" "vect" } } */
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index
dc102c919352a0328cf86eabceb3a38c41a7e4fd..599a027f9b2feb8971c1ee017b6457bc297c86c2
100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -1405,15 +1405,14 @@ static gimple *
vect_recog_widen_op_pattern (vec_info *vinfo,
stmt_vec_info last_stmt_info, tree *type_out,
tree_code orig_code, code_helper wide_code,
- bool shift_p, const char *name,
- optab_subtype *subtype = NULL)
+ bool shift_p, const char *name)
{
gimple *last_stmt = last_stmt_info->stmt;
vect_unpromoted_value unprom[2];
tree half_type;
if (!vect_widened_op_tree (vinfo, last_stmt_info, orig_code, orig_code,
- shift_p, 2, unprom, &half_type, subtype))
+ shift_p, 2, unprom, &half_type))
return NULL;
@@ -1484,13 +1483,11 @@ static gimple *
vect_recog_widen_op_pattern (vec_info *vinfo,
stmt_vec_info last_stmt_info, tree *type_out,
tree_code orig_code, internal_fn wide_ifn,
- bool shift_p, const char *name,
- optab_subtype *subtype = NULL)
+ bool shift_p, const char *name)
{
combined_fn ifn = as_combined_fn (wide_ifn);
return vect_recog_widen_op_pattern (vinfo, last_stmt_info, type_out,
- orig_code, ifn, shift_p, name,
- subtype);
+ orig_code, ifn, shift_p, name);
}
@@ -1513,11 +1510,9 @@ static gimple *
vect_recog_widen_plus_pattern (vec_info *vinfo, stmt_vec_info last_stmt_info,
tree *type_out)
{
- optab_subtype subtype;
return vect_recog_widen_op_pattern (vinfo, last_stmt_info, type_out,
PLUS_EXPR, IFN_VEC_WIDEN_PLUS,
- false, "vect_recog_widen_plus_pattern",
- &subtype);
+ false, "vect_recog_widen_plus_pattern");
}
/* Try to detect subtraction on widened inputs, converting MINUS_EXPR
@@ -1526,11 +1521,9 @@ static gimple *
vect_recog_widen_minus_pattern (vec_info *vinfo, stmt_vec_info last_stmt_info,
tree *type_out)
{
- optab_subtype subtype;
return vect_recog_widen_op_pattern (vinfo, last_stmt_info, type_out,
MINUS_EXPR, IFN_VEC_WIDEN_MINUS,
- false, "vect_recog_widen_minus_pattern",
- &subtype);
+ false, "vect_recog_widen_minus_pattern");
}
/* Function vect_recog_ctz_ffs_pattern