From 1a029efd1ad47f5736faa7f7be6780b649a8b257 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Wed, 10 Jan 2018 07:02:21 +0100 Subject: Run beam_block again after other optimizations have been run Running beam_block again after the other optimizations have run will give it more opportunities for optimizations. In particular, more allocate_zero/2 instructions can be turned into allocate/2 instructions, and more get_tuple_element/3 instructions can store the retrieved value into the correct register at once. Out of a sample of about 700 modules in OTP, 64 modules were improved by this commit. --- lib/compiler/src/compile.erl | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'lib/compiler/src/compile.erl') diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl index 770aa2c6c1..1409c358c2 100644 --- a/lib/compiler/src/compile.erl +++ b/lib/compiler/src/compile.erl @@ -775,6 +775,8 @@ asm_passes() -> {iff,drecv,{listing,"recv"}}, {unless,no_record_opt,{pass,beam_record}}, {iff,drecord,{listing,"record"}}, + {unless,no_blk2,?pass(block2)}, + {iff,dblk2,{listing,"block2"}}, {unless,no_stack_trimming,{pass,beam_trim}}, {iff,dtrim,{listing,"trim"}}, {pass,beam_flatten}]}, @@ -1350,6 +1352,10 @@ v3_kernel(Code0, #compile{options=Opts,warnings=Ws0}=St) -> {ok,Code,St} end. +block2(Code0, #compile{options=Opts}=St) -> + {ok,Code} = beam_block:module(Code0, [no_blockify|Opts]), + {ok,Code,St}. + test_old_inliner(#compile{options=Opts}) -> %% The point of this test is to avoid loading the old inliner %% if we know that it will not be used. -- cgit v1.2.3