reference, declaration → definition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced

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; RUN: opt < %s -instcombine -S | grep sub
; PR2553

define double @test(double %X) nounwind {
	; fsub of self can't be optimized away.
	%Y = fsub double %X, %X
	ret double %Y
}