File 2361-beam_disasm-Resolve-float-arithmetic-as-bi... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 2361-beam_disasm-Resolve-float-arithmetic-as-bif-s.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

Currently displaying revision b1ddc78860c1f178c6361caad002e77d , Show latest

From 3330262e59a8aa53c9e9d262765d949b7e88b5a5 Mon Sep 17 00:00:00 2001
From: Michael Davis <mcarsondavis@gmail.com>
Date: Wed, 9 Nov 2022 15:59:26 -0600
Subject: [PATCH 1/8] beam_disasm: Resolve float arithmetic as 'bif's

HiPE translated float arithmetic BIFs as 'arithfbif' in order to handle
arithmetic operations differently from other guard BIFs.

For asm format, though, these are expected to be `bif/5` instructions.
For example, in the following listing:

fadd(A,B) when is_float(A) andalso is_float(B) -> A + B.

The addition operation becomes a `bif/5`:

{test,is_float,{f,1},[{x,0}]}.
    {test,is_float,{f,1},[{x,1}]}.
    {fmove,{x,0},{fr,0}}.
    {fmove,{x,1},{fr,1}}.
    {bif,fadd,{f,0},[{fr,0},{fr,1}],{fr,0}}.
    {test_heap,{alloc,[{words,0},{floats,1},{funs,0}]},0}.
    {fmove,{fr,0},{x,0}}.
    return.
---
 lib/compiler/src/beam_disasm.erl | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/compiler/src/beam_disasm.erl b/lib/compiler/src/beam_disasm.erl
index 9cc2b8455f..bd48b40c4e 100644
--- a/lib/compiler/src/beam_disasm.erl
+++ b/lib/compiler/src/beam_disasm.erl
@@ -973,19 +973,19 @@ resolve_inst({fconv,Args},_,_,_) ->
     {fconv,Reg,FR};
 resolve_inst({fadd=I,Args},_,_,_) ->
     [F,A1,A2,Reg] = resolve_args(Args),
-    {arithfbif,I,F,[A1,A2],Reg};
+    {bif,I,F,[A1,A2],Reg};
 resolve_inst({fsub=I,Args},_,_,_) ->
     [F,A1,A2,Reg] = resolve_args(Args),
-    {arithfbif,I,F,[A1,A2],Reg};
+    {bif,I,F,[A1,A2],Reg};
 resolve_inst({fmul=I,Args},_,_,_) ->
     [F,A1,A2,Reg] = resolve_args(Args),
-    {arithfbif,I,F,[A1,A2],Reg};
+    {bif,I,F,[A1,A2],Reg};
 resolve_inst({fdiv=I,Args},_,_,_) ->
     [F,A1,A2,Reg] = resolve_args(Args),
-    {arithfbif,I,F,[A1,A2],Reg};
+    {bif,I,F,[A1,A2],Reg};
 resolve_inst({fnegate,Args},_,_,_) ->
     [F,Arg,Reg] = resolve_args(Args),
-    {arithfbif,fnegate,F,[Arg],Reg};
+    {bif,fnegate,F,[Arg],Reg};
 
 %%
 %% Instructions for try expressions added in January 2003 (R10).
-- 
2.35.3

Places

File 2361-beam_disasm-Resolve-float-arithmetic-as-bif-s.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

Places