Nate Begeman e066d68eb4 Add testcase for legalizing ISD::CTTZ efficiently. On PPC, ctlz(int) is ...

now codegen'd as this:

        addi r2, r3, -1
        andc r2, r2, r3
        cntlzw r2, r2
        subfic r3, r2, 32
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21881 91177308-0d34-0410-b5e6-96231b3b80d8

2005-05-11 23:45:54 +00:00

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