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00180662fe
Estimated hours taken: 1.5 Fix a determinism analysis abort which was caused by det_analysis.m not updating the instmap to include the initial insts of the lambda variables before processing a lambda goal. This problem was also present in cse_detection.m and simplify.m. tests/valid/Mmake tests/valid/lambda_instmap_bug.m Regression test.
37 lines
853 B
Mathematica
37 lines
853 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 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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:- import_module list.
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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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lambda([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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