From e8af484268dee77eba449dc151dc7dad718376d8 Mon Sep 17 00:00:00 2001 From: Sebastian Pop Date: Wed, 25 Nov 2009 05:19:05 +0000 Subject: sese.c (get_vdef_before_sese): Handle GIMPLE_ASSIGN and GIMPLE_CALL. 2009-10-20 Sebastian Pop * sese.c (get_vdef_before_sese): Handle GIMPLE_ASSIGN and GIMPLE_CALL. From-SVN: r154613 --- gcc/sese.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-) (limited to 'gcc/sese.c') diff --git a/gcc/sese.c b/gcc/sese.c index 2c38b24..917adbd 100644 --- a/gcc/sese.c +++ b/gcc/sese.c @@ -407,8 +407,8 @@ static tree get_vdef_before_sese (sese region, tree name, sbitmap visited) { unsigned i; - gimple def_stmt = SSA_NAME_DEF_STMT (name); - basic_block def_bb = gimple_bb (def_stmt); + gimple stmt = SSA_NAME_DEF_STMT (name); + basic_block def_bb = gimple_bb (stmt); if (!def_bb || !bb_in_sese_p (def_bb, region)) return name; @@ -418,18 +418,36 @@ get_vdef_before_sese (sese region, tree name, sbitmap visited) SET_BIT (visited, def_bb->index); - switch (gimple_code (def_stmt)) + switch (gimple_code (stmt)) { case GIMPLE_PHI: - for (i = 0; i < gimple_phi_num_args (def_stmt); i++) + for (i = 0; i < gimple_phi_num_args (stmt); i++) { - tree arg = gimple_phi_arg_def (def_stmt, i); - tree res = get_vdef_before_sese (region, arg, visited); + tree arg = gimple_phi_arg_def (stmt, i); + tree res; + + if (gimple_bb (SSA_NAME_DEF_STMT (arg)) + && def_bb->index == gimple_bb (SSA_NAME_DEF_STMT (arg))->index) + continue; + + res = get_vdef_before_sese (region, arg, visited); if (res) return res; } return NULL_TREE; + case GIMPLE_ASSIGN: + case GIMPLE_CALL: + { + use_operand_p use_p = gimple_vuse_op (stmt); + tree use = USE_FROM_PTR (use_p); + + if (def_bb->index == gimple_bb (SSA_NAME_DEF_STMT (use))->index) + RESET_BIT (visited, def_bb->index); + + return get_vdef_before_sese (region, use, visited); + } + default: return NULL_TREE; } -- cgit v1.1