diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2009-12-07 23:37:21 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-12-07 23:37:21 +0100 |
| commit | aec4e50c21eced5ee903b7350b71170fa58262e4 (patch) | |
| tree | 853a74782258e6b15090a44af48211e0ea2c2900 /gcc/ddg.c | |
| parent | 8ad9d49ec9946a8ab98404ed6c07ae48e9d345ab (diff) | |
| download | gcc-aec4e50c21eced5ee903b7350b71170fa58262e4.tar.gz | |
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
Diffstat (limited to 'gcc/ddg.c')
| -rw-r--r-- | gcc/ddg.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/gcc/ddg.c b/gcc/ddg.c index 23fa6fa2aeb..f51c5dc4e29 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); } } |