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| author | Jakub Jelinek <jakub@redhat.com> | 2010-05-10 20:28:03 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-05-10 20:28:03 +0200 |
| commit | 1de12eab7496fe7a8a03e83efbbf6dd6318c3aa0 (patch) | |
| tree | d86819bbb461712b2745a75881652b0b4f22b6e0 /gcc/haifa-sched.c | |
| parent | e472d6bf32eb3baf6334e187926dd8fb4dcf8b01 (diff) | |
| download | gcc-1de12eab7496fe7a8a03e83efbbf6dd6318c3aa0.zip gcc-1de12eab7496fe7a8a03e83efbbf6dd6318c3aa0.tar.gz gcc-1de12eab7496fe7a8a03e83efbbf6dd6318c3aa0.tar.bz2 | |
re PR debug/44028 (-fcompare-debug failure (length) with -O3 -fsched-pressure -fschedule-insns)
PR debug/44028
* haifa-sched.c (schedule_insn): When clearing INSN_VAR_LOCATION_LOC,
clear also INSN_REG_USE_LIST.
* gcc.dg/pr44028.c: New test.
From-SVN: r159240
Diffstat (limited to 'gcc/haifa-sched.c')
| -rw-r--r-- | gcc/haifa-sched.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index b7f0cfc..0dd220d 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -1695,6 +1695,7 @@ schedule_insn (rtx insn) sd_iterator_cond (&sd_it, &dep);) { rtx dbg = DEP_PRO (dep); + struct reg_use_data *use, *next; gcc_assert (DEBUG_INSN_P (dbg)); @@ -1716,6 +1717,14 @@ schedule_insn (rtx insn) INSN_VAR_LOCATION_LOC (dbg) = gen_rtx_UNKNOWN_VAR_LOC (); df_insn_rescan (dbg); + /* Unknown location doesn't use any registers. */ + for (use = INSN_REG_USE_LIST (dbg); use != NULL; use = next) + { + next = use->next_insn_use; + free (use); + } + INSN_REG_USE_LIST (dbg) = NULL; + /* We delete rather than resolve these deps, otherwise we crash in sched_free_deps(), because forward deps are expected to be released before backward deps. */ |