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b7fdc7ff16
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
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