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815baebe1c
writebacks to the address register. This gets rid of the hack that the first register on the list was the magic writeback register operand. There was an implicit constraint that if that operand was not reg0 it had to match the base register operand. The post-RA scheduler's antidependency breaker did not understand that constraint and sometimes changed one without the other. This also fixes Radar 7495976 and should help the verifier work better for ARM code. There are now new ld/st instructions explicit writeback operands and explicit constraints that tie those registers together. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98409 91177308-0d34-0410-b5e6-96231b3b80d8 |
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