Simplify processing and remove dead code (error paths) in asmlink (port upstream PR#9943) #557
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An analysis of the code should convince yourself that the [object_file_name] function is not needed and that its erroring paths are dead code. The reasoning is the following: all the uses of [object_file_name] in asmlink.ml are performed on [obj_name]s which went through [read_file] before. The latter does exactly the same file name lookup and erroring treatement, except not in a stringly manner like [object_file_name] does. This new function derives the same information as [object_file_name] except it does it on the [file] datatype returned by [read_file]. Note that all the erroring code paths of [object_file_name] have been handled by the [read_file] which derived the [file] value. We integrate the logic added by PR #9011 for empty cmxa here.
This commit does the following four things (it's difficult to them in separate commits that compile). 1) It removes the [read_file] from [scan_file]. Reading the files is done seperately before returning an [obj_infos] list of [file] values. This turns [scan_file] into a function that operates on values of type [file]. 2) In [scan_file] it removes the separate list of [obj_files] introduced by #9011. We can derive the same list using the function [object_file_name_of_file] introduced in the previous commit on the list of [obj_infos]. Effectively we bring back [scan_file] to the state before #9011 modulo the [read_file] removal. 3) We derive the list of [obj_files] directly from the [obj_infos] list via [object_file_name_of_file]. Note that the logic introduced by #9011 is preserved by virtue of [object_file_name_of_file]'s optional result. 4) Deletes [object_file_name] which is no longer used.
xclerc
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lpw25
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fe8a98b flambda-backend: Save Mach as Cfg after Selection (#624) 2b205d8 flambda-backend: Clean up algorithms (#611) 524f0b4 flambda-backend: Initial refactoring of To_cmm (#619) 0bf75de flambda-backend: Refactor and correct the "is pure" and "can raise" (port upstream PR#10354 and PR#10387) (#555) d234bfd flambda-backend: Cpp mangling is now a configuration option (#614) 20fc614 flambda-backend: Check that stack frames are not too large (#10085) (#561) 5fc2e95 flambda-backend: Allow CSE of immutable loads across stores (port upstream PR#9562) (#562) 2a650de flambda-backend: Backport commit fc95347 from trunk (#584) 31651b8 flambda-backend: Improved ARM64 code generation (port upstream PR#9937) (#556) f0b6d68 flambda-backend: Simplify processing and remove dead code (error paths) in asmlink (port upstream PR#9943) (#557) 90c6746 flambda-backend: Improve code-generation for inlined comparisons (port upstream PR#10228) (#563) git-subtree-dir: ocaml git-subtree-split: fe8a98b
mshinwell
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May 20, 2022
…rt upstream PR#9943) (#557) * Asmlink.object_file_name removal: add object_file_name_of_file An analysis of the code should convince yourself that the [object_file_name] function is not needed and that its erroring paths are dead code. The reasoning is the following: all the uses of [object_file_name] in asmlink.ml are performed on [obj_name]s which went through [read_file] before. The latter does exactly the same file name lookup and erroring treatement, except not in a stringly manner like [object_file_name] does. This new function derives the same information as [object_file_name] except it does it on the [file] datatype returned by [read_file]. Note that all the erroring code paths of [object_file_name] have been handled by the [read_file] which derived the [file] value. We integrate the logic added by PR #9011 for empty cmxa here. * Asmlink.object_file_name removal: remove. This commit does the following four things (it's difficult to them in separate commits that compile). 1) It removes the [read_file] from [scan_file]. Reading the files is done seperately before returning an [obj_infos] list of [file] values. This turns [scan_file] into a function that operates on values of type [file]. 2) In [scan_file] it removes the separate list of [obj_files] introduced by #9011. We can derive the same list using the function [object_file_name_of_file] introduced in the previous commit on the list of [obj_infos]. Effectively we bring back [scan_file] to the state before #9011 modulo the [read_file] removal. 3) We derive the list of [obj_files] directly from the [obj_infos] list via [object_file_name_of_file]. Note that the logic introduced by #9011 is preserved by virtue of [object_file_name_of_file]'s optional result. 4) Deletes [object_file_name] which is no longer used. Co-authored-by: Daniel Bünzli <daniel.buenzli@erratique.ch>
lpw25
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fe8a98b flambda-backend: Save Mach as Cfg after Selection (oxcaml#624) 2b205d8 flambda-backend: Clean up algorithms (oxcaml#611) 524f0b4 flambda-backend: Initial refactoring of To_cmm (oxcaml#619) 0bf75de flambda-backend: Refactor and correct the "is pure" and "can raise" (port upstream PR#10354 and PR#10387) (oxcaml#555) d234bfd flambda-backend: Cpp mangling is now a configuration option (oxcaml#614) 20fc614 flambda-backend: Check that stack frames are not too large (#10085) (oxcaml#561) 5fc2e95 flambda-backend: Allow CSE of immutable loads across stores (port upstream PR#9562) (oxcaml#562) 2a650de flambda-backend: Backport commit fc95347 from trunk (oxcaml#584) 31651b8 flambda-backend: Improved ARM64 code generation (port upstream PR#9937) (oxcaml#556) f0b6d68 flambda-backend: Simplify processing and remove dead code (error paths) in asmlink (port upstream PR#9943) (oxcaml#557) 90c6746 flambda-backend: Improve code-generation for inlined comparisons (port upstream PR#10228) (oxcaml#563) git-subtree-dir: ocaml git-subtree-split: fe8a98b
mshinwell
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May 24, 2022
454150b flambda-backend: Speed up testsuite (#658) 8362f9e flambda-backend: Speed up builds (#585) a527cab flambda-backend: Update backends for changes from ocaml-jst ce88833 Merge flambda-backend changes b7506bb Revert "Cherry-pick of ocaml/ocaml 1eeb0e7fe595f5f9e1ea1edbdf785ff3b49feeeb (#12)" 183f688 Add config option to enable/disable stack allocation (#22) ee7c849 If both the type and mode of an ident are wrong, complain about the type. (#19) 44bade0 Allow submoding during module inclusion checks (#21) de3bec9 Add subtyping between arrows of related modes (#20) fe8a98b flambda-backend: Save Mach as Cfg after Selection (#624) 2b205d8 flambda-backend: Clean up algorithms (#611) 93d8615 Enable the local keywords even when the local extension is off (#18) 524f0b4 flambda-backend: Initial refactoring of To_cmm (#619) 81dd85e Documentation for local allocations b05519f Fix a GC bug in local stack scanning (#17) 9f879de Fix __FUNCTION__ (#15) 0bf75de flambda-backend: Refactor and correct the "is pure" and "can raise" (port upstream PR#10354 and PR#10387) (#555) d234bfd flambda-backend: Cpp mangling is now a configuration option (#614) 20fc614 flambda-backend: Check that stack frames are not too large (#10085) (#561) 5fc2e95 flambda-backend: Allow CSE of immutable loads across stores (port upstream PR#9562) (#562) 2a650de flambda-backend: Backport commit fc95347 from trunk (#584) a78975e Optimise "include struct ... end" in more cases (ocaml/ocaml#11134) b819c66 Cherry-pick of ocaml/ocaml 1eeb0e7fe595f5f9e1ea1edbdf785ff3b49feeeb (#12) bb363d4 Optimise the allocation of optional arguments (#11) 31651b8 flambda-backend: Improved ARM64 code generation (port upstream PR#9937) (#556) f0b6d68 flambda-backend: Simplify processing and remove dead code (error paths) in asmlink (port upstream PR#9943) (#557) 90c6746 flambda-backend: Improve code-generation for inlined comparisons (port upstream PR#10228) (#563) git-subtree-dir: ocaml git-subtree-split: 454150b
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See ocaml/ocaml#9943.