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On 10/10/14 11:25, Richard Henderson wrote:
On 10/10/2014 10:21 AM, Jeff Law wrote:On 10/10/14 11:04, Jakub Jelinek wrote:On Fri, Oct 10, 2014 at 11:00:54AM -0600, Jeff Law wrote:But it's really a lot more like akind of PLUS. If instead we had a LOW to match HIGH it would have beenRight. In fact, I believe at the hardware level it's typically implemented as addition.Can be addition or bitwise or, as high should have some low bits zero, both usually work the same.It can be bitwise-or on some architectures...Just to be clear, the LOW rtx code I mentioned upthread was for illustration purposes only. I only intend to change the rtx class of the existing LO_SUM.
That was my expectation :-) jeff
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