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c0dffb491e
Estimated hours taken: 3 Branches: main Deprecate old-style lambda expressions properly. compiler/make_hlds.m: Emit a warning if an old-style lambda expression is encountered. compiler/notes/todo.html: Remove this from the TODO list. compiler/base_typeclass_info.m: compiler/mercury_to_mercury.m: extras/odbc/odbc.m: tests/*/*.m: Replace old-style lambda expressions as necessary.
35 lines
832 B
Mathematica
35 lines
832 B
Mathematica
% Regression test for a case where cse_detection.m, det_analysis.m
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% and simplify.m were not updating the instmap before processing
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% a lambda expression, causing an abort in determinism analysis.
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:- module lambda_instmap_bug.
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:- interface.
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:- import_module list, set, std_util.
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:- type instr == pair(instruction, string).
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:- type instruction
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---> clear(int)
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; drop(int)
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; join(int, int, int).
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:- pred detect_streams(set(int), list(instr), list(instr)).
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:- mode detect_streams(in, in, out) is det.
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:- implementation.
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detect_streams(Streams, Instrs0, Instrs) :-
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% Don't attempt to clear or drop streams.
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IsNotStreamClear =
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(pred(Instr::in) is semidet :-
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\+ (
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( Instr = clear(Rel) - _
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; Instr = drop(Rel) - _
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),
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set__member(Rel, Streams)
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)
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),
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list__filter(IsNotStreamClear, Instrs0, Instrs).
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