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369a4c7759
These idempotent sub-register indices don't do anything --- They simply map XMM registers to themselves. They no longer affect register classes either since the SubRegClasses field has been removed from Target.td. This patch replaces XMM->XMM EXTRACT_SUBREG and INSERT_SUBREG patterns with COPY_TO_REGCLASS patterns which simply become COPY instructions. The number of IMPLICIT_DEF instructions before register allocation is reduced, and that is the cause of the test case changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160816 91177308-0d34-0410-b5e6-96231b3b80d8 |
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