From: Richard Biener <rguenther@suse.de>
Date: Wed, 30 Jul 2025 10:34:20 +0000 (+0200)
Subject: tree-optimization/121130 - vectorizable_call cannot handle .MASK_CALL
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e9d3957c6fea548c9c4a8504261e669add9512a;p=thirdparty%2Fgcc.git

tree-optimization/121130 - vectorizable_call cannot handle .MASK_CALL

The following makes it correctly reject them,
vectorizable_simd_clone_call is solely responsible for them.

	PR tree-optimization/121130
	* tree-vect-stmts.cc (vectorizable_call): Bail out for
	.MASK_CALL.

	* gcc.dg/vect/vect-simd-pr121130.c: New testcase.

(cherry picked from commit a0d2de441ea0898e508c36567fbb77f161afa3c8)
---

diff --git a/gcc/testsuite/gcc.dg/vect/vect-simd-pr121130.c b/gcc/testsuite/gcc.dg/vect/vect-simd-pr121130.c
new file mode 100644
index 00000000000..c882dedd8be
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-simd-pr121130.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+
+int n2;
+
+__attribute__((simd)) char
+w7(void)
+{
+  short int xb = n2;
+    xb = w7() < 1;
+  return xb;
+}
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index d6651a3ed06..c1d34503fab 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -3560,7 +3560,13 @@ vectorizable_call (vec_info *vinfo,
 
   int mask_opno = -1;
   if (internal_fn_p (cfn))
-    mask_opno = internal_fn_mask_index (as_internal_fn (cfn));
+    {
+      /* We can only handle direct internal masked calls here,
+	 vectorizable_simd_clone_call is for the rest.  */
+      if (cfn == CFN_MASK_CALL)
+	return false;
+      mask_opno = internal_fn_mask_index (as_internal_fn (cfn));
+    }
 
   for (i = 0; i < nargs; i++)
     {