bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[DAGCombiner] Fold (zext (and/or/xor (shl/shr (load x), cst), cst))	Guozhi Wei	2018-04-07	1	-0/+17
	In our real world application, we found the following optimization is missed in DAGCombiner (zext (and/or/xor (shl/shr (load x), cst), cst)) -> (and/or/xor (shl/shr (zextload x), (zext cst)), (zext cst)) If the user of original zext is an add, it may enable further lea optimization on x86. This patch add a new function CombineZExtLogicopShiftLoad to do this optimization. Differential Revision: https://reviews.llvm.org/D44402 llvm-svn: 329516