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Re: FW: Build failed in Jenkins: BuildThunderX_native_gcc_upstream #1267


On 03/17/2017 04:12 PM, Jim Wilson wrote:
I have access to a fast box that isn't otherwise in use at the moment so
I'm taking a look.  r246225 builds OK.  r246226 does not.  So it is
Bernd's combine patch.  A little experimenting shows that the compare
difference is triggered by the use of -gtoggle in stage2, which is not
used in stage3.  Otherwise stage2 and stage3 generate identical code.
The bug is apparently due to a problem with handling debug insns in the
combine patch.

Changing a new prev_nonnote_insn call to a prev_nonnote_nondebug_insn call appears to solve the problem. I will have to do a bootstrap and make check from scratch to verify. I also noticed that there is a redundant i1 check in the patch which should be fixed also.

Jim


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