0000527: daio pass and inlining

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0000527

mercury

Bug

public

2021-01-27 13:00

Reporter

wangp

Assigned To

Priority

normal

Severity

minor

Reproducibility

always

Status

new

Resolution

open

Product Version

Target Version

Fixed in Version

Summary

0000527: daio pass and inlining

Description

The compiler aborts on gh72.m test during the inlining pass, with intermodule optimisation turned OFF.

% mmc -s asm_fast.gc -O5 --no-intermod-opt gh72.m
Uncaught Mercury exception:
Software Error: predicate `hlds.instmap.merge_instmapping_delta_vars'/9: Unexpected: error merging var 5
Stack dump follows:
   0 pred exception.throw/1-0 (erroneous) (exception.m:310)
   1 pred require.error/1-0 (erroneous) (require.m:172)
   2 pred require.unexpected/2-0 (erroneous) (require.m:203)
   3 2* pred hlds.instmap.merge_instmapping_delta_vars/9-0 (det) (instmap.m:1334 and others)
   5 pred hlds.instmap.merge_instmapping_delta/8-0 (det) (instmap.m:1290)
   6 pred hlds.instmap.merge_instmap_delta/8-0 (det) (instmap.m:1271)
   7 pred hlds.instmap.merge_instmap_deltas_2/8-0 (det) (instmap.m:1376)
   8 pred hlds.instmap.merge_instmap_deltas/7-0 (det) (instmap.m:1345)
   9 pred check_hlds.mode_util.recompute_instmap_delta_disj/9-0 (det) (mode_util.m:1602)
  10 pred check_hlds.mode_util.recompute_instmap_delta_1/8-0 (det) (mode_util.m:1391)
  11 pred check_hlds.mode_util.recompute_instmap_delta_conj/8-0 (det) (mode_util.m:1577)
  12 pred check_hlds.mode_util.recompute_instmap_delta_1/8-0 (det) (mode_util.m:1379)
  13 pred check_hlds.mode_util.recompute_instmap_delta/8-0 (det) (mode_util.m:1353)
  14 pred check_hlds.mode_util.recompute_instmap_delta_proc/5-0 (det) (mode_util.m:1346)
  15 pred transform_hlds.inlining.inline_in_proc/6-0 (det) (inlining.m:706)
  16 pred transform_hlds.inlining.inline_in_scc/6-0 (det) (inlining.m:298)
  17 10* pred transform_hlds.inlining.inline_in_sccs/5-0 (det) (inlining.m:282 and others)
  27 pred transform_hlds.inlining.inline_in_module/2-0 (det) (inlining.m:269)
  28 pred top_level.mercury_compile_middle_passes.maybe_do_inlining/6-0 (det) (mercury_compile_middle_passes.m:977)
  29 pred top_level.mercury_compile_middle_passes.middle_pass/8-0 (det) (mercury_compile_middle_passes.m:212)
  30 pred top_level.mercury_compile_main.after_front_end_passes/13-0 (det) (mercury_compile_main.m:2416)
  31 pred top_level.mercury_compile_main.process_augmented_module/14-0 (det) (mercury_compile_main.m:1793)
  32 pred top_level.mercury_compile_main.augment_and_process_module/15-0 (det) (mercury_compile_main.m:1687)
  33 pred list.map_foldl3/9-0 (det) (list.m:3335)
  34 pred top_level.mercury_compile_main.augment_and_process_all_submodules/15-0 (det) (mercury_compile_main.m:1627)
  35 pred top_level.mercury_compile_main.read_augment_and_process_module/11-0 (det) (mercury_compile_main.m:1447)
  36 pred top_level.mercury_compile_main.do_process_compiler_arg/10-0 (det) (mercury_compile_main.m:1207)
  37 pred top_level.mercury_compile_main.process_compiler_arg_build/11-0 (det) (mercury_compile_main.m:1091)
  38 pred make.build.build_with_module_options_args_invoked/13-0 (det) (make.build.m:234)
  39 pred make.build.build_with_module_options_args/12-0 (det) (make.build.m:185)
  40 pred top_level.mercury_compile_main.process_compiler_arg/12-0 (det) (mercury_compile_main.m:1052)
  41 pred top_level.mercury_compile_main.process_compiler_cmd_line_args/14-0 (det) (mercury_compile_main.m:1010)
  42 pred top_level.mercury_compile_main.do_op_mode_args/11-0 (det) (mercury_compile_main.m:845)
  43 pred top_level.mercury_compile_main.do_op_mode/10-0 (det) (mercury_compile_main.m:710)
  44 pred top_level.mercury_compile_main.main_after_setup/7-0 (det) (mercury_compile_main.m:672)
  45 pred top_level.mercury_compile_main.real_main_after_expansion/3-0 (det) (mercury_compile_main.m:443)
  46 pred top_level.mercury_compile_main.real_main/2-0 (det) (mercury_compile_main.m:137)
  47 pred mercury_compile.main/2-0 (det) (mercury_compile.m:32)

The problem occurs when doing inlining in the predicate gh72.direct_arg_in_out_0_disj_init/3. It tries to merge the insts of a variable between two disjuncts:

        InstA
bound(clobbered, inst_test_no_results,
  [bound_functor(cons(qualified(unqualified("gh72"), "f1"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [ground(clobbered, none_or_default_func)]),
   bound_functor(cons(qualified(unqualified("gh72"), "f2"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [ground(clobbered, none_or_default_func)]),
   bound_functor(cons(qualified(unqualified("gh72"), "f3"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [ground(clobbered, none_or_default_func)]),
   bound_functor(cons(qualified(unqualified("gh72"), "f4"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [ground(clobbered, none_or_default_func)])])

       InstB
bound(clobbered, inst_test_no_results,
  [bound_functor(cons(qualified(unqualified("gh72"), "f1"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [free]),
   bound_functor(cons(qualified(unqualified("gh72"), "f2"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)),
     [bound(clobbered, inst_test_no_results,
        [bound_functor(cons(qualified(unqualified("gh72"), "package"), 2, type_ctor(unqualified(""), -1)),
           [bound(clobbered, inst_test_no_results, [bound_functor(string_const("fill2"), [])]), ground(clobbered, none_or_default_func)])])]),
   bound_functor(cons(qualified(unqualified("gh72"), "f3"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)),
     [bound(clobbered, inst_test_no_results,
        [bound_functor(cons(qualified(unqualified("gh72"), "package"), 2, type_ctor(unqualified(""), -1)),
           [bound(clobbered, inst_test_no_results, [bound_functor(string_const("fill3"), [])]), ground(clobbered, none_or_default_func)])])]),
   bound_functor(cons(qualified(unqualified("gh72"), "f4"), 1, type_ctor(qualified(unqualified("gh72"), "t"), 0)), [ground(shared, none_or_default_func)])])

Date Modified	Username	Field	Change
Issue History
2021-01-27 13:00	wangp	New Issue

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