2 Commits

Author	SHA1	Message	Date
Chad Rosier	8e38f30e49	[AArch64] When combining constant mul of -3, prefer (sub x, (shl x, N)). ... This change only effects codegen when the constant is -3. llvm-svn: 231085	2015-03-03 17:31:01 +00:00
Chad Rosier	e6b8761ab9	[AArch64] Convert mul x, -(pow2 +/- 1) to shift + add/sub. ... The combine for mul x, pow2 +/- 1 is unchanged. Test cases for both combines as well as mul x, pow2 have been added as well. llvm-svn: 212044	2014-06-30 14:51:14 +00:00