[llvm-commits] [PATCH] optimization of -(x != 0) to use neg in X86

[manman ren]

This patch will optimize -(x != 0) on X86
FROM 
cmpl	$0x01,%edi
sbbl	%eax,%eax
notl	%eax
TO
negl %edi
sbbl %eax %eax

Please review & provide feedback,
Thanks,
Manman

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