bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[CVP] Remove a masking operation if range information implies it's a noop	Philip Reames	2019-10-11	1	-0/+127
	This is really a known bits style transformation, but known bits isn't context sensitive. The particular case which comes up happens to involve a range which allows range based reasoning to eliminate the mask pattern, so handle that case specifically in CVP. InstCombine likes to generate the mask-by-low-bits pattern when widening an arithmetic expression which includes a zext in the middle. Differential Revision: https://reviews.llvm.org/D68811 llvm-svn: 374506