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re PR middle-end/81889 (bogus warnings with -Wmaybe-uninitialized -O3)
authorRichard Biener <rguenther@suse.de>
Tue, 12 Dec 2017 08:50:31 +0000 (08:50 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Tue, 12 Dec 2017 08:50:31 +0000 (08:50 +0000)
commit5b0c69ae65b713ab68202af20dae9dca533d39cf
tree3bb310f9df1511ec6309b70eb110224f29320ea1tree
parente157d4567738df5cb009a3304ca910501d77585fcommit | diff
re PR middle-end/81889 (bogus warnings with -Wmaybe-uninitialized -O3)

2017-12-12  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81889
* tree-ssa-loop-niter.c (infer_loop_bounds_from_signedness): Use
range info from the non-wrapping IV instead of just the range
of the type.

* gfortran.dg/pr81889.f90: New testcase.
* gcc.dg/tree-ssa/pr64183.c: Adjust.

From-SVN: r255573
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/tree-ssa/pr64183.c diff | blob | history
gcc/testsuite/gfortran.dg/pr81889.f90 [new file with mode: 0644] blob
gcc/tree-ssa-loop-niter.c diff | blob | history