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When the address comes directly from a shift instruction then the address computation cannot be folded into the memory instruction, because the zero register is not available as a base register. Simplify addess needs to emit the shift instruction and use the result as base register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216621 91177308-0d34-0410-b5e6-96231b3b80d8
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