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| author | Jan Hubicka <hubicka@ucw.cz> | 2018-01-11 09:14:33 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2018-01-11 08:14:33 +0000 |
| commit | 29c02e655dca7391afb7f2cbfab7c7bcb68361ac (patch) | |
| tree | 850390880e53385f1c5fc8cc4e7abc4204bea7b7 /gcc/tree-ssa-loop-manip.c | |
| parent | 3211aea29a0576eeb3326879b2f58fc0ed374a40 (diff) | |
| download | gcc-29c02e655dca7391afb7f2cbfab7c7bcb68361ac.zip gcc-29c02e655dca7391afb7f2cbfab7c7bcb68361ac.tar.gz gcc-29c02e655dca7391afb7f2cbfab7c7bcb68361ac.tar.bz2 | |
re PR tree-optimization/83189 (internal compiler error: in probability_in, at profile-count.h:1050)
PR middle-end/83189
* gfortran.fortran-torture/compile/pr83189.f90: New testcase.
* tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Handle zero
profile.
From-SVN: r256480
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
| -rw-r--r-- | gcc/tree-ssa-loop-manip.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c index 80e91d0..bf425af 100644 --- a/gcc/tree-ssa-loop-manip.c +++ b/gcc/tree-ssa-loop-manip.c @@ -1378,7 +1378,8 @@ tree_transform_and_unroll_loop (struct loop *loop, unsigned factor, { /* Avoid dropping loop body profile counter to 0 because of zero count in loop's preheader. */ - freq_e = freq_e.force_nonzero (); + if (freq_h.nonzero_p () && !(freq_e == profile_count::zero ())) + freq_e = freq_e.force_nonzero (); scale_loop_frequencies (loop, freq_e.probability_in (freq_h)); } |