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nir: always attempt to find loop terminators

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This will help later patches with unrolling loops that end with a
break i.e. loops the always exit on their first interation.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Timothy Arceri
2018-07-07 12:02:08 +10:00
parent 1e40f69483
commit fef6325e58
1 changed files with 7 additions and 7 deletions
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14
src/compiler/nir/nir_loop_analyze.c
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@@ -717,13 +717,6 @@ get_loop_info(loop_info_state *state, nir_function_impl *impl)
} }
} }
/* Induction analysis needs invariance information so get that first */
compute_invariance_information(state);
/* We have invariance information so try to find induction variables */
if (!compute_induction_information(state))
return;
/* Try to find all simple terminators of the loop. If we can't find any, /* Try to find all simple terminators of the loop. If we can't find any,
* or we find possible terminators that have side effects then bail. * or we find possible terminators that have side effects then bail.
*/ */
@@ -737,6 +730,13 @@ get_loop_info(loop_info_state *state, nir_function_impl *impl)
return; return;
} }
/* Induction analysis needs invariance information so get that first */
compute_invariance_information(state);
/* We have invariance information so try to find induction variables */
if (!compute_induction_information(state))
return;
/* Run through each of the terminators and try to compute a trip-count */ /* Run through each of the terminators and try to compute a trip-count */
find_trip_count(state); find_trip_count(state);