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11abe69e98
Patch by Kit Barton. Support for the ICBT instruction is currently present, but limited to embedded processors. This change adds a new FeatureICBT that can be used to identify whether the ICBT instruction is available on a specific processor. Two new tests are added: * Positive test to ensure the icbt instruction is present when using -mcpu=pwr8 * Negative test to ensure the icbt instruction is not generated when using -mcpu=pwr7 Both test cases use the Prefetch opcode in LLVM. They are based on the ppc64-prefetch.ll test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226033 91177308-0d34-0410-b5e6-96231b3b80d8
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