third_party/llvm-7.0/llvm/test/CodeGen/PowerPC/2004-12-12-ZeroSizeCommon.ll - SwiftShader - Git at Google

 ; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- | not grep .comm.*X,0

 @X = linkonce global {  } zeroinitializer               ; <{  }*> [#uses=0]
	; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- \| not grep .comm.*X,0

	@X = linkonce global { } zeroinitializer ; <{ }*> [#uses=0]