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Container: D151750: [DAGCombine] `select_cc seteq X, 0, 0, cttz_zero_undef(X) -> and(cttz(X), sizeof(X) - 1)`
Buildable: Diff 526775
Origin: Automatic Buildable

	Time	Test
	450 ms	x64 debian > LLVM.CodeGen/AMDGPU::ctlz_zero_undef.ll
	40 ms	x64 debian > LLVM.CodeGen/SPARC::cttz.ll