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mercury/compiler
Julien Fischer dae82a8409 Implement trail usage optimization for the lowlevel backend.
Estimated hours taken: 5
Branches: main

Implement trail usage optimization for the lowlevel backend.

compiler/code_gen.m:
	As we generate code for each HLDS goal check if it is safe to omit
	trailing operations.  Do so, if trail usage optimization is enabled.

	Reformat some code for the purposes of readability.

compiler/commit_gen.m:
compiler/disj_gen.m:
compiler/ite_gen.m:
compiler/code_info.m:
	Thread the above information down to the relevant parts of the code
	generator.

	Misc. cleanups: reduce unnecessary module qualification and minor
	layout fixes.

compiler/code_util.m:
	Add a utility predicate the tests if we are allowed to omit trailing
	primitives for a given HLDS goal.

compiler/llds.m:
	Add the equivalence type: add_trail_ops == bool.

compiler/hlds_goal.m:
compiler/prog_data.m:
	Unrelated changes: fix typos in comments.

	Add an end_module declaration to the former.
2005-11-17 04:38:44 +00:00
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