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	}			}

	KnownBits GISelKnownBits::getKnownBits(Register R, const APInt &DemandedElts,			KnownBits GISelKnownBits::getKnownBits(Register R, const APInt &DemandedElts,
	unsigned Depth) {			unsigned Depth) {
	// For now, we only maintain the cache during one request.			// For now, we only maintain the cache during one request.
	assert(ComputeKnownBitsCache.empty() && "Cache should have been cleared");			assert(ComputeKnownBitsCache.empty() && "Cache should have been cleared");

	KnownBits Known;			KnownBits Known;
	computeKnownBitsImpl(R, Known, DemandedElts);			computeKnownBitsImpl(R, Known, DemandedElts, Depth);
	ComputeKnownBitsCache.clear();			ComputeKnownBitsCache.clear();
	return Known;			return Known;
	}			}

	bool GISelKnownBits::signBitIsZero(Register R) {			bool GISelKnownBits::signBitIsZero(Register R) {
	LLT Ty = MRI.getType(R);			LLT Ty = MRI.getType(R);
	unsigned BitWidth = Ty.getScalarSizeInBits();			unsigned BitWidth = Ty.getScalarSizeInBits();
	return maskedValueIsZero(R, APInt::getSignMask(BitWidth));			return maskedValueIsZero(R, APInt::getSignMask(BitWidth));
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[GlobalISel] GISelKnownBits: forward unused depth parameterClosedPublic