[Bug target/63404] [5 Regression] gcc 5 miscompiles linux block layer

[pthaugen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63404

Pat Haugen <pthaugen at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |pthaugen at gcc dot gnu.org

--- Comment #6 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Jiong Wang from comment #5)
> we need to check the following 
> 
>    else if (GET_CODE == CLOBBER
>             || GET_CODE (x) == USE
>             || GET_CODE (x) == ASM_INPUT)
> 
> I will post the fix after pass x86 bootstrap and regression

r215563 also introduced a miscompare on PowerPC for cpu2000 benchmark 254.gap.
Applying your patch proposed on the gcc-patches ml for this bug fixes the
issue.