diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-05-21 18:45:29 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-05-21 18:45:29 +0000 |
| commit | 47086a61a88b49eb7490f0a7f4f864af4ee9584b (patch) | |
| tree | ecc6ff1833b54604393846a37e39a3473d3c215c /gcc/haifa-sched.c | |
| parent | dae0b5cb50db9ca6cef431ff04cc3dcb322eb943 (diff) | |
| download | gcc-47086a61a88b49eb7490f0a7f4f864af4ee9584b.tar.gz | |
PR debug/44223
* haifa-sched.c (schedule_insn): When freeing INSN_REG_USE_LIST,
unchain each use from the cyclic next_regno_use chain first.
* gcc.target/i386/pr44223.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159680 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/haifa-sched.c')
| -rw-r--r-- | gcc/haifa-sched.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index f7c087fef79..b15fe63f34a 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -1721,6 +1721,12 @@ schedule_insn (rtx insn) /* Unknown location doesn't use any registers. */ for (use = INSN_REG_USE_LIST (dbg); use != NULL; use = next) { + struct reg_use_data *prev = use; + + /* Remove use from the cyclic next_regno_use chain first. */ + while (prev->next_regno_use != use) + prev = prev->next_regno_use; + prev->next_regno_use = use->next_regno_use; next = use->next_insn_use; free (use); } |