}
		s.setOrig(c, v2)
		s.assignReg(r2, v2, c)
	}

	// If the evicted register isn't used between the start of the block
	// and now then there is no reason to even request it on entry. We can
	// drop from startRegs in that case.
	if s.usedSinceBlockStart&(regMask(1)<<r) == 0 {
		if s.startRegsMask&(regMask(1)<<r) == 1 {
			if s.f.pass.debug > regDebug {

// Commenting out for now, because it also can't trigger because of the is32bit guard on the
// ANDQconst lowering-rule, above, prevents 0xFFFFFFFF from matching (for the same reason)
// Using an alternate form of this rule segfaults some binaries because of
// adverse interactions with other passes.
// (ANDQconst [0xFFFFFFFF] x) => (MOVLQZX x)

// strength reduction