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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
This commit is contained in:
Jan Hubicka 2018-01-11 09:14:33 +01:00 committed by Jan Hubicka
parent 3211aea29a
commit 29c02e655d
4 changed files with 14 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-01-10 Jan Hubicka <hubicka@ucw.cz>
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.
2018-01-10 Jan Hubicka <hubicka@ucw.cz>
PR middle-end/83575

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-01-10 Jan Hubicka <hubicka@ucw.cz>
PR middle-end/83189
* gfortran.fortran-torture/compile/pr83189.f90: New testcase.
2018-01-10 Jan Hubicka <hubicka@ucw.cz>
* gcc.c-torture/compile/pr83575.c: New testcase.

0
gcc/testsuite/gfortran.fortran-torture/compile/pr83081.f90 → gcc/testsuite/gfortran.fortran-torture/compile/pr83189.f90
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3
gcc/tree-ssa-loop-manip.c
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@ -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));
}