; RUN: opt < %s -passes=instcombine -disable-output

	%struct.Ray = type { %struct.Vec, %struct.Vec }
	%struct.Scene = type { ptr }
	%struct.Vec = type { double, double, double }

declare double @_Z9ray_traceRK3VecRK3RayRK5Scene(ptr, ptr, ptr)

define i32 @main(i32 %argc, ptr %argv) {
entry:
	%tmp3 = alloca %struct.Ray, align 4		; <ptr> [#uses=2]
	%tmp97 = icmp slt i32 0, 512		; <i1> [#uses=1]
	br i1 %tmp97, label %bb71, label %bb108

bb29:		; preds = %bb62
	%tmp322.0 = getelementptr %struct.Vec, ptr %tmp3, i32 0, i32 0		; <ptr> [#uses=1]
	store double 0.000000e+00, ptr %tmp322.0
	%tmp57 = call double @_Z9ray_traceRK3VecRK3RayRK5Scene( ptr null, ptr %tmp3, ptr null )		; <double> [#uses=0]
	br label %bb62

bb62:		; preds = %bb71, %bb29
	%tmp65 = icmp slt i32 0, 4		; <i1> [#uses=1]
	br i1 %tmp65, label %bb29, label %bb68

bb68:		; preds = %bb62
	ret i32 0

bb71:		; preds = %entry
	%tmp74 = icmp slt i32 0, 4		; <i1> [#uses=1]
	br i1 %tmp74, label %bb62, label %bb77

bb77:		; preds = %bb71
	ret i32 0

bb108:		; preds = %entry
	ret i32 0
}