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Commit 4b491878 authored by Andrew Trick's avatar Andrew Trick
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Fix PostRA antidependence breaker. 

Avoid using the same register for two def operands or and earlyclobber
def and use operand. This fixes PR8986 and improves on the prior fix
for rdar://problem/8959122.

llvm-svn: 125089
parent 0beaec05
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