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Jakob Stoklund Olesen
d8c18daea5
Teach ARMLoadStoreOptimizer to remove kill flags from merged instructions as well.
This is necessary to avoid a crash in certain tangled situations where a kill flag is first correctly moved to a merged instruction, and then needs to be moved again: STR %R0, a... STR %R0<kill>, b... First becomes: STR %R0, b... STM a, %R0<kill>, ... and then: STM a, %R0, ... STM b, %R0<kill>, ... We can now remove the kill flag from the merged STM when needed. 8960050. llvm-svn: 125591
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