From 7bd678640d855ee9053d6d78434a98d977ad0f1f Mon Sep 17 00:00:00 2001 From: Anthony Ramine Date: Tue, 19 Nov 2013 18:17:53 +0100 Subject: Collect all optimised allocate instructions in beam_block Any init instruction following an allocate is put in the Inits list of the corresponding alloc tuple. --- lib/compiler/src/beam_block.erl | 9 +++++++++ lib/compiler/src/beam_flatten.erl | 1 + 2 files changed, 10 insertions(+) (limited to 'lib') diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl index 5d96b51bff..402fbe2e2e 100644 --- a/lib/compiler/src/beam_block.erl +++ b/lib/compiler/src/beam_block.erl @@ -123,6 +123,11 @@ is_last_bool([], _) -> false. collect_block(Is) -> collect_block(Is, []). +collect_block([{allocate,N,R}|Is0], Acc) -> + {Inits,Is} = lists:splitwith(fun ({init,{y,_}}) -> true; + (_) -> false + end, Is0), + collect_block(Is, [{set,[],[],{alloc,R,{nozero,N,0,Inits}}}|Acc]); collect_block([{allocate_zero,Ns,R},{test_heap,Nh,R}|Is], Acc) -> collect_block(Is, [{set,[],[],{alloc,R,{zero,Ns,Nh,[]}}}|Acc]); collect_block([I|Is]=Is0, Acc) -> @@ -131,7 +136,11 @@ collect_block([I|Is]=Is0, Acc) -> Instr -> collect_block(Is, [Instr|Acc]) end. +collect({allocate,N,R}) -> {set,[],[],{alloc,R,{nozero,N,0,[]}}}; collect({allocate_zero,N,R}) -> {set,[],[],{alloc,R,{zero,N,0,[]}}}; +collect({allocate_heap,Ns,Nh,R}) -> {set,[],[],{alloc,R,{nozero,Ns,Nh,[]}}}; +collect({allocate_heap_zero,Ns,Nh,R}) -> {set,[],[],{alloc,R,{zero,Ns,Nh,[]}}}; +collect({init,D}) -> {set,[D],[],init}; collect({test_heap,N,R}) -> {set,[],[],{alloc,R,{nozero,nostack,N,[]}}}; collect({bif,N,F,As,D}) -> {set,[D],As,{bif,N,F}}; collect({gc_bif,N,F,R,As,D}) -> {set,[D],As,{alloc,R,{gc_bif,N,F}}}; diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl index 25428c0c10..5603a677e8 100644 --- a/lib/compiler/src/beam_flatten.erl +++ b/lib/compiler/src/beam_flatten.erl @@ -51,6 +51,7 @@ norm_block([], Acc) -> Acc. norm({set,[D],As,{bif,N,F}}) -> {bif,N,F,As,D}; norm({set,[D],As,{alloc,R,{gc_bif,N,F}}}) -> {gc_bif,N,F,R,As,D}; +norm({set,[D],[],init}) -> {init,D}; norm({set,[D],[S],move}) -> {move,S,D}; norm({set,[D],[S],fmove}) -> {fmove,S,D}; norm({set,[D],[S],fconv}) -> {fconv,S,D}; -- cgit v1.2.3