diff options
Diffstat (limited to 'gcc-4.6/gcc/sched-deps.c')
| -rw-r--r-- | gcc-4.6/gcc/sched-deps.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc-4.6/gcc/sched-deps.c b/gcc-4.6/gcc/sched-deps.c index 7293fc3..50494cf 100644 --- a/gcc-4.6/gcc/sched-deps.c +++ b/gcc-4.6/gcc/sched-deps.c @@ -2687,7 +2687,11 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx insn) else sched_analyze_2 (deps, XEXP (link, 0), insn); } - if (find_reg_note (insn, REG_SETJMP, NULL)) + /* Don't schedule anything after a tail call, tail call needs + to use at least all call-saved registers. */ + if (SIBLING_CALL_P (insn)) + reg_pending_barrier = TRUE_BARRIER; + else if (find_reg_note (insn, REG_SETJMP, NULL)) reg_pending_barrier = MOVE_BARRIER; } |