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baf1395d7d
They turned out to have a zero hit rate, making them useless.
compiler/make.dependencies.m:
Add code to use the two new caches, indirect_imports_non_intermod
and anc0_dir1_indir2_non_intermod. I got statistics on their
performance while they were enabled, but since their hit rate was zero,
this diff includes them only in a commented-out form.
Note that adding the second cache required adding a new dep_spec,
which remains, since it shouldn't affect performance at all.
compiler/make.deps_cache.m:
Disable the those two caches.
Fix an issue where the original statistics-gathering code
mixed up hits and misses.
Include the statistics gathered in course of implementing this diff.
tools/make_deps_cache_stats:
Update this script to fix the hit/miss issue, and to print more info.
This directory, mercury/tools, contains scripts that are not intended for use by users. The scripts here are used by the Mercury developers for maintaining the Mercury compiler.