[gcc(refs/users/marxin/heads/backport-11)] ipa: do not make localaliases for target_clones [PR101261]

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:fbe246620e2fa5b5968718837ae4c12fdb85ba39

commit fbe246620e2fa5b5968718837ae4c12fdb85ba39
Author: Martin Liska <mliska@suse.cz>
Date:   Fri Aug 13 11:10:56 2021 +0200

    ipa: do not make localaliases for target_clones [PR101261]
    
            PR ipa/101261
    
    gcc/ChangeLog:
    
            * symtab.c (symtab_node::noninterposable_alias): Do not create
              local aliases for target_clone functions as the clonning pass
              rejects aliases.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/i386/pr101261.c: New test.

Diff:
---
 gcc/symtab.c                             |  2 ++
 gcc/testsuite/gcc.target/i386/pr101261.c | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/gcc/symtab.c b/gcc/symtab.c
index 2135b34ce27..5530a124a9d 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -1959,6 +1959,8 @@ symtab_node::noninterposable_alias (void)
   /* If aliases aren't supported by the assembler, fail.  */
   if (!TARGET_SUPPORTS_ALIASES)
     return NULL;
+  else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (node->decl)))
+    return NULL;
 
   /* Otherwise create a new one.  */
   new_decl = copy_node (node->decl);
diff --git a/gcc/testsuite/gcc.target/i386/pr101261.c b/gcc/testsuite/gcc.target/i386/pr101261.c
new file mode 100644
index 00000000000..d25d1a202c2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr101261.c
@@ -0,0 +1,11 @@
+/* PR middle-end/101261 */
+/* { dg-do compile { target fpic } } */
+/* { dg-options "-fno-semantic-interposition -fPIC" } */
+/* { dg-require-ifunc "" } */
+
+void
+__attribute__((target_clones("default", "avx2")))
+dt_ioppr_transform_image_colorspace()
+{
+  dt_ioppr_transform_image_colorspace();
+}