Currently the dumps are somewhat inter-mangled, not showing the
(possibly bad) recursion between niter estimation and number of
iteration computation. The following tries to improve deciphering
a little bit by dumping when we do niter estimation.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2022-03-21 Richard Biener <rguent...@suse.de>
* tree-ssa-loop-niter.cc (estimate_numbers_of_iterations): Dump
we are estimating niter of loop.
---
gcc/tree-ssa-loop-niter.cc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/tree-ssa-loop-niter.cc b/gcc/tree-ssa-loop-niter.cc
index 9bb5097379b..afa51064953 100644
--- a/gcc/tree-ssa-loop-niter.cc
+++ b/gcc/tree-ssa-loop-niter.cc
@@ -4374,6 +4374,9 @@ estimate_numbers_of_iterations (class loop *loop)
if (loop->estimate_state != EST_NOT_COMPUTED)
return;
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file, "Estimating # of iterations of loop %d\n", loop->num);
+
loop->estimate_state = EST_AVAILABLE;
/* If we have a measured profile, use it to estimate the number of
--
2.34.1
