Ulrich Weigand b7fdc7ff16 [PowerPC] Implement atomic NAND operations as actual NAND
This changes the implementation of atomic NAND operations
from "a & ~b" (compatible with GCC < 4.4) to actual "~(a & b)"
(compatible with GCC >= 4.4).

This is in line with the common-code and ARM back-end change
implemented in r212433.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212547 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-08 16:16:02 +00:00
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