[gcc r15-10166] tree-optimization/121130 - vectorizable_call cannot handle .MASK_CALL

[Richard Biener via Gcc-cvs]

https://gcc.gnu.org/g:5e9d3957c6fea548c9c4a8504261e669add9512a

commit r15-10166-g5e9d3957c6fea548c9c4a8504261e669add9512a
Author: Richard Biener <rguent...@suse.de>
Date:   Wed Jul 30 12:34:20 2025 +0200

    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:
---
 gcc/testsuite/gcc.dg/vect/vect-simd-pr121130.c | 11 +++++++++++
 gcc/tree-vect-stmts.cc                         |  8 +++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

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 000000000000..c882dedd8be7
--- /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 d6651a3ed06b..c1d34503fab2 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++)
     {