[gcc(refs/users/marxin/heads/PR94250-fix-ipa-ref-clonning)] Save ref->speculative_id before clone_reference.

[Martin Liska]

https://gcc.gnu.org/g:d8360ca99d85f500210f47ff2db41e8129d4d9a3

commit d8360ca99d85f500210f47ff2db41e8129d4d9a3
Author: Martin Liska <mliska@suse.cz>
Date:   Sat Mar 21 18:36:00 2020 +0100

    Save ref->speculative_id before clone_reference.
    
    gcc/ChangeLog:
    
    2020-03-21  Martin Liska  <mliska@suse.cz>
    
            PR ipa/94250
            * symtab.c (symtab_node::clone_references): Save speculative_id
            as ref may be overwritten by create_reference.
            (symtab_node::clone_referring): Likewise.
            (symtab_node::clone_reference): Likewise.

Diff:
---
 gcc/symtab.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/gcc/symtab.c b/gcc/symtab.c
index 3022acfc1ea..a36cdccf9c1 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -670,11 +670,12 @@ symtab_node::clone_references (symtab_node *node)
     {
       bool speculative = ref->speculative;
       unsigned int stmt_uid = ref->lto_stmt_uid;
+      unsigned int spec_id = ref->speculative_id;
 
       ref2 = create_reference (ref->referred, ref->use, ref->stmt);
       ref2->speculative = speculative;
       ref2->lto_stmt_uid = stmt_uid;
-      ref2->speculative_id = ref->speculative_id;
+      ref2->speculative_id = spec_id;
     }
 }
 
@@ -689,11 +690,12 @@ symtab_node::clone_referring (symtab_node *node)
     {
       bool speculative = ref->speculative;
       unsigned int stmt_uid = ref->lto_stmt_uid;
+      unsigned int spec_id = ref->speculative_id;
 
       ref2 = ref->referring->create_reference (this, ref->use, ref->stmt);
       ref2->speculative = speculative;
       ref2->lto_stmt_uid = stmt_uid;
-      ref2->speculative_id = ref->speculative_id;
+      ref2->speculative_id = spec_id;
     }
 }
 
@@ -704,12 +706,13 @@ symtab_node::clone_reference (ipa_ref *ref, gimple *stmt)
 {
   bool speculative = ref->speculative;
   unsigned int stmt_uid = ref->lto_stmt_uid;
+  unsigned int spec_id = ref->speculative_id;
   ipa_ref *ref2;
 
   ref2 = create_reference (ref->referred, ref->use, stmt);
   ref2->speculative = speculative;
   ref2->lto_stmt_uid = stmt_uid;
-  ref2->speculative_id = ref->speculative_id;
+  ref2->speculative_id = spec_id;
   return ref2;
 }