[Bug target/63783] [4.9/5 Regression] [SH] Miscompilation of boolean negation on SH4 using -O2

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63783

Oleg Endo <olegendo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #34062|0                           |1
        is obsolete|                            |

--- Comment #16 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Created attachment 34072
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34072&action=edit
Proposed patch

Other existing test cases needed some adjustments.  Tested on trunk with
make -k check RUNTESTFLAGS="--target_board=sh-sim\{-m4/-ml,-m4/-mb}"

and no new failures.  Applies also on 4.9 branch without problems.  Tested on
4.9 briefly with make all-gcc and checking the generated code for the
problematic test case.  I will apply this patch if there are no further
objections.