diff options
Diffstat (limited to 'lib/hipe/x86/hipe_x86_defuse.erl')
| -rw-r--r-- | lib/hipe/x86/hipe_x86_defuse.erl | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/hipe/x86/hipe_x86_defuse.erl b/lib/hipe/x86/hipe_x86_defuse.erl index 9cba6cbe4b..4455def74e 100644 --- a/lib/hipe/x86/hipe_x86_defuse.erl +++ b/lib/hipe/x86/hipe_x86_defuse.erl @@ -35,7 +35,7 @@ -endif. -module(?HIPE_X86_DEFUSE). --export([insn_def/1, insn_use/1]). %% src_use/1]). +-export([insn_def/1, insn_defs_all/1, insn_use/1]). %% src_use/1]). -include("../x86/hipe_x86.hrl"). %%% @@ -64,6 +64,16 @@ insn_def(I) -> _ -> [] end. + +%% @doc Answers whether instruction I defines all allocatable registers. Used by +%% hipe_regalloc_prepass. +-spec insn_defs_all(_) -> boolean(). +insn_defs_all(I) -> + case I of + #pseudo_call{} -> true; + _ -> false + end. + dst_def(Dst) -> case Dst of #x86_temp{} -> [Dst]; |