diff options
Diffstat (limited to 'gcc/tree-ssa-dom.c')
| -rw-r--r-- | gcc/tree-ssa-dom.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index 2fa8da25eb6..3f7cbfe4874 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -1,5 +1,5 @@ /* SSA Dominator optimizations for trees - Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Diego Novillo <dnovillo@redhat.com> @@ -2526,6 +2526,11 @@ propagate_rhs_into_lhs (gimple stmt, tree lhs, tree rhs, bitmap interesting_name be successful would be if the use occurs in an ASM_EXPR. */ FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs) { + /* Leave debug stmts alone. If we succeed in propagating + all non-debug uses, we'll drop the DEF, and propagation + into debug stmts will occur then. */ + if (gimple_debug_bind_p (use_stmt)) + continue; /* It's not always safe to propagate into an ASM_EXPR. */ if (gimple_code (use_stmt) == GIMPLE_ASM |