From aec4e50c21eced5ee903b7350b71170fa58262e4 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Mon, 7 Dec 2009 23:37:21 +0100 Subject: re PR debug/42244 (var-tracking ICE for 300.twolf) PR debug/42244 * ddg.c (add_inter_loop_mem_dep): Use ANTI_DEP if from or to is a DEBUG_INSN. * gcc.dg/debug/pr42244.c: New test. From-SVN: r155062 --- gcc/ddg.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'gcc/ddg.c') diff --git a/gcc/ddg.c b/gcc/ddg.c index 23fa6fa..f51c5dc 100644 --- a/gcc/ddg.c +++ b/gcc/ddg.c @@ -359,9 +359,13 @@ add_inter_loop_mem_dep (ddg_ptr g, ddg_node_ptr from, ddg_node_ptr to) if (mem_write_insn_p (from->insn)) { if (mem_read_insn_p (to->insn)) - create_ddg_dep_no_link (g, from, to, TRUE_DEP, MEM_DEP, 1); + create_ddg_dep_no_link (g, from, to, + DEBUG_INSN_P (to->insn) + ? ANTI_DEP : TRUE_DEP, MEM_DEP, 1); else if (from->cuid != to->cuid) - create_ddg_dep_no_link (g, from, to, OUTPUT_DEP, MEM_DEP, 1); + create_ddg_dep_no_link (g, from, to, + DEBUG_INSN_P (to->insn) + ? ANTI_DEP : OUTPUT_DEP, MEM_DEP, 1); } else { @@ -369,8 +373,11 @@ add_inter_loop_mem_dep (ddg_ptr g, ddg_node_ptr from, ddg_node_ptr to) return; else if (from->cuid != to->cuid) { - create_ddg_dep_no_link (g, from, to, ANTI_DEP, MEM_DEP, 1); - create_ddg_dep_no_link (g, to, from, TRUE_DEP, MEM_DEP, 1); + create_ddg_dep_no_link (g, from, to, ANTI_DEP, MEM_DEP, 1); + if (DEBUG_INSN_P (from->insn) || DEBUG_INSN_P (to->insn)) + create_ddg_dep_no_link (g, to, from, ANTI_DEP, MEM_DEP, 1); + else + create_ddg_dep_no_link (g, to, from, TRUE_DEP, MEM_DEP, 1); } } -- cgit v1.1