diff options
Diffstat (limited to 'lib/hipe/ssa')
| -rw-r--r-- | lib/hipe/ssa/hipe_ssa.inc | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/lib/hipe/ssa/hipe_ssa.inc b/lib/hipe/ssa/hipe_ssa.inc index 83ab320306..b511bb6f25 100644 --- a/lib/hipe/ssa/hipe_ssa.inc +++ b/lib/hipe/ssa/hipe_ssa.inc @@ -1,4 +1,4 @@ -%% -*- erlang-indent-level: 2 -*- +%% -*- mode: erlang; erlang-indent-level: 2 -*- %% %% %CopyrightBegin% %% @@ -943,9 +943,9 @@ do_code([Instr|Instrs], LiveOut, Changed, Acc) -> false -> do_code(Instrs, LiveIn, Changed, [Instr|Acc]); true -> - case ?CODE:is_safe(Instr) of + case ?CODE:is_call(Instr) of true -> - case ?CODE:is_call(Instr) of + case ?CODE:is_safe(Instr) of true -> case ?CODE:call_continuation(Instr) of [] -> @@ -955,11 +955,6 @@ do_code([Instr|Instrs], LiveOut, Changed, Acc) -> do_code(Instrs, LiveOut, true, [NewInstr|Acc]) end; false -> - do_code(Instrs, LiveOut, true, Acc) - end; - false -> %% not a safe instruction - cannot be removed - case ?CODE:is_call(Instr) of - true -> case ?CODE:call_dstlist(Instr) of [] -> %% result was not used anyway; no change do_code(Instrs, LiveIn, Changed, [Instr|Acc]); @@ -968,9 +963,14 @@ do_code([Instr|Instrs], LiveOut, Changed, Acc) -> do_code(Instrs, LiveIn, true, [NewInstr|Acc]); [_|_] -> %% calls with multiple dests are left untouched do_code(Instrs, LiveIn, Changed, [Instr|Acc]) - end; - false -> - do_code(Instrs, LiveIn, Changed, [Instr|Acc]) + end + end; + false -> + case ?CODE:reduce_unused(Instr) of + false -> % not a safe instruction - cannot be removed + do_code(Instrs, LiveIn, Changed, [Instr|Acc]); + Replacement -> + do_code(lists:reverse(Replacement, Instrs), LiveOut, true, Acc) end end end; |