Ulrich Weigand df86855f61 [SystemZ] Fix fall-out from r314428 ...

The expensive-checks build bot found a problem with the r314428 commit:
if CC is live after a ATOMIC_CMP_SWAPW instruction, it needs to be
marked as live-in to the block after the loop the pseudo gets expanded
to.  This actually fixes a code-gen bug as well, since if the CC isn't
live, the CR and JLH are merged to a CRJLH which doesn't actually set
the condition code any more.

llvm-svn: 314465

2017-09-28 22:08:25 +00:00

258 KiB

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