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Add a comment about `det' unifications to the discussion of

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compiler/prog_data.m:
	Add a comment about `det' unifications to the discussion of
	`real' and `fake' unifications of clobbered insts.
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Fergus Henderson
1997-04-10 20:20:43 +00:00
parent cf56b95494
commit 63ffdba4b9
1 changed files with 2 additions and 1 deletions
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compiler/prog_data.m
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@@ -314,7 +314,8 @@
% Unifications of insts fall into two categories, "real" and "fake".
% The "real" inst unifications correspond to real unifications,
% and are not allowed to unify with `clobbered' insts.
% and are not allowed to unify with `clobbered' insts (unless
% the unification would be `det').
% "Fake" inst unifications are used for procedure calls in implied
% modes, where the final inst of the var must be computed by
% unifying its initial inst with the procedure's final inst,