[gcc r15-281] Fix block index check in insert_updated_phi_nodes_for

[Richard Biener via Gcc-cvs]

https://gcc.gnu.org/g:bf10f0db20db1598157505b373098bc93c66b915

commit r15-281-gbf10f0db20db1598157505b373098bc93c66b915
Author: Richard Biener <rguent...@suse.de>
Date:   Thu Apr 4 15:16:28 2024 +0200

    Fix block index check in insert_updated_phi_nodes_for
    
    This replaces a >= 0 block index check with the appropriate 
NUM_FIXED_BLOCKs,
    the check is from times ENTRY_BLOCK was negative.
    
            * tree-into-ssa.cc (insert_updated_phi_nodes_for): Fix block
            index check.

Diff:
---
 gcc/tree-into-ssa.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/tree-into-ssa.cc b/gcc/tree-into-ssa.cc
index d12a4a97f65..705e4119ba3 100644
--- a/gcc/tree-into-ssa.cc
+++ b/gcc/tree-into-ssa.cc
@@ -3301,7 +3301,7 @@ insert_updated_phi_nodes_for (tree var, bitmap_head *dfs,
 
          mark_block_for_update (bb);
          FOR_EACH_EDGE (e, ei, bb->preds)
-           if (e->src->index >= 0)
+           if (e->src->index >= NUM_FIXED_BLOCKS)
              mark_block_for_update (e->src);
        }