@item Loop optimization
-This pass moves constant expressions out of loops,
-and optionally does strength-reduction and loop unrolling as well.
-Its source files are @file{loop.c} and @file{unroll.c}, plus the header
-@file{loop.h} used for communication between them. Loop unrolling uses
-some functions in @file{integrate.c} and the header @file{integrate.h}.
+This pass moves constant expressions out of loops, and optionally does
+strength-reduction as well. The pass is located in @file{loop.c}.
Loop dependency analysis routines are contained in @file{dependence.c}.
This pass is seriously out-of-date and is supposed to be replaced by
a new one described below in near future.
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