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Commit 36c13315 authored by Craig Topper's avatar Craig Topper
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[CodeGen] Teach DAG combine to fold select_cc seteq X, 0, sizeof(X),... 

[CodeGen] Teach DAG combine to fold select_cc seteq X, 0, sizeof(X), ctlz_zero_undef(X) -> ctlz(X). InstCombine already does this for IR and X86 pattern matches this during isel.

A follow up commit will remove the X86 patterns to allow this to be tested.

llvm-svn: 267325
parent beb77bd8
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