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ca3f371f12
Avoid conservative behavior in REE by allowing removal of redundant extends when the def feeds another extend with a different mode. This works because in merge_def_and_ext only calls combine_set_extension if the candidate for removal has a wider mode than the def extend's mode, otherwise the def extend mode is preserved. In combine_set_extension the def is modified to use the wider candidate's mode. 2012-10-26 Teresa Johnson <tejohnson@google.com> * ree.c (add_removable_extension): Remove unnecessary mode check with other extension. * testsuite/gcc.c-torture/execute/20111227-2.c: New test. * testsuite/gcc.c-torture/execute/20111227-3.c: Ditto. From-SVN: r192850
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