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| author | Björn-Egil Dahlberg <[email protected]> | 2015-05-14 14:55:42 +0200 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2015-05-21 15:44:02 +0200 |
| commit | 99d4f73b20b950ce0ee1be8adf9108373d9dbbd9 (patch) | |
| tree | 856e1d91b0421032490cab1c33bab8fa3e193f19 /lib | |
| parent | 565d2c6fc3217b1d11e56a42d406f078b50b632c (diff) | |
| download | otp-99d4f73b20b950ce0ee1be8adf9108373d9dbbd9.tar.gz otp-99d4f73b20b950ce0ee1be8adf9108373d9dbbd9.tar.bz2 otp-99d4f73b20b950ce0ee1be8adf9108373d9dbbd9.zip | |
beam_dict: Use Maps to map line indices
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compiler/src/beam_dict.erl | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl index aa37f2e812..e8e6fe8bab 100644 --- a/lib/compiler/src/beam_dict.erl +++ b/lib/compiler/src/beam_dict.erl @@ -34,7 +34,7 @@ -type atom_tab() :: #{atom() => index()}. -type import_tab() :: gb_trees:tree(mfa(), index()). -type fname_tab() :: gb_trees:tree(Name :: term(), index()). --type line_tab() :: gb_trees:tree({Fname :: index(), Line :: term()}, index()). +-type line_tab() :: #{{Fname :: index(), Line :: term()} => index()}. -type literal_tab() :: dict:dict(Literal :: term(), index()). -record(asm, @@ -46,7 +46,7 @@ lambdas = [], %[{...}] literals = dict:new() :: literal_tab(), fnames = gb_trees:empty() :: fname_tab(), - lines = gb_trees:empty() :: line_tab(), + lines = #{} :: line_tab(), num_lines = 0 :: non_neg_integer(), %Number of line instructions next_import = 0 :: non_neg_integer(), string_offset = 0 :: non_neg_integer(), @@ -175,16 +175,14 @@ line([], #asm{num_lines=N}=Dict) -> %% No location available. Return the special pre-defined %% index 0. {0,Dict#asm{num_lines=N+1}}; -line([{location,Name,Line}], #asm{lines=Lines0,num_lines=N}=Dict0) -> +line([{location,Name,Line}], #asm{lines=Lines,num_lines=N}=Dict0) -> {FnameIndex,Dict1} = fname(Name, Dict0), - case gb_trees:lookup({FnameIndex,Line}, Lines0) of - {value,Index} -> - {Index,Dict1#asm{num_lines=N+1}}; - none -> - Index = gb_trees:size(Lines0) + 1, - Lines = gb_trees:insert({FnameIndex,Line}, Index, Lines0), - Dict = Dict1#asm{lines=Lines,num_lines=N+1}, - {Index,Dict} + Key = {FnameIndex,Line}, + case Lines of + #{Key := Index} -> {Index,Dict1#asm{num_lines=N+1}}; + _ -> + Index = maps:size(Lines) + 1, + {Index, Dict1#asm{lines=Lines#{Key=>Index},num_lines=N+1}} end. fname(Name, #asm{fnames=Fnames0}=Dict) -> @@ -272,8 +270,8 @@ line_table(#asm{fnames=Fnames0,lines=Lines0,num_lines=NumLineInstrs}) -> NumFnames = gb_trees:size(Fnames0), Fnames1 = lists:keysort(2, gb_trees:to_list(Fnames0)), Fnames = [Name || {Name,_} <- Fnames1], - NumLines = gb_trees:size(Lines0), - Lines1 = lists:keysort(2, gb_trees:to_list(Lines0)), + NumLines = maps:size(Lines0), + Lines1 = lists:keysort(2, maps:to_list(Lines0)), Lines = [L || {L,_} <- Lines1], {NumLineInstrs,NumFnames,Fnames,NumLines,Lines}. |