From 8cb65b3725f0c31a3ea5d5b8de37eacba55462f3 Mon Sep 17 00:00:00 2001 From: Marc Glisse Date: Thu, 21 Aug 2014 11:32:21 +0200 Subject: re PR tree-optimization/62112 (Optimize out malloc when block is unused or write-only) 2014-08-21 Marc Glisse PR tree-optimization/62112 gcc/ * gimple-iterator.c (gsi_replace): Return whether EH cleanup is needed. * gimple-iterator.h (gsi_replace): Return bool. * tree-ssa-alias.c (ref_may_alias_global_p_1): New helper, code moved from ref_may_alias_global_p. (ref_may_alias_global_p, refs_may_alias_p, ref_maybe_used_by_stmt_p): New overloads. (ref_maybe_used_by_call_p): Take ao_ref* instead of tree. (stmt_kills_ref_p_1): Rename... (stmt_kills_ref_p): ... to this. * tree-ssa-alias.h (ref_may_alias_global_p, ref_maybe_used_by_stmt_p, stmt_kills_ref_p): Declare. * tree-ssa-dse.c (dse_possible_dead_store_p): New argument, use it. Move the self-assignment case... (dse_optimize_stmt): ... here. Handle builtin calls. Remove dead code. gcc/testsuite/ * gcc.dg/tree-ssa/pr62112-1.c: New file. * gcc.dg/tree-ssa/pr62112-2.c: Likewise. * gcc.c-torture/execute/pr35472.c: Add noclone attribute. * gcc.c-torture/execute/20071219-1.c: Likewise. From-SVN: r214262 --- gcc/gimple-iterator.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'gcc/gimple-iterator.h') diff --git a/gcc/gimple-iterator.h b/gcc/gimple-iterator.h index 47168b9..b117b4b 100644 --- a/gcc/gimple-iterator.h +++ b/gcc/gimple-iterator.h @@ -58,7 +58,7 @@ extern void gsi_insert_seq_after (gimple_stmt_iterator *, gimple_seq, extern gimple_seq gsi_split_seq_after (gimple_stmt_iterator); extern void gsi_set_stmt (gimple_stmt_iterator *, gimple); extern void gsi_split_seq_before (gimple_stmt_iterator *, gimple_seq *); -extern void gsi_replace (gimple_stmt_iterator *, gimple, bool); +extern bool gsi_replace (gimple_stmt_iterator *, gimple, bool); extern void gsi_replace_with_seq (gimple_stmt_iterator *, gimple_seq, bool); extern void gsi_insert_before_without_update (gimple_stmt_iterator *, gimple, enum gsi_iterator_update); -- cgit v1.1