bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[DAGCombiner][X86][SystemZ] Canonicalize SSUBO with immediate RHS to SADDO ↵	Craig Topper	2019-04-09	1	-3/+3
\| \| \| \| \| \| \| \| \| \|	by negating the immediate. This lines up with what we do for regular subtract and it matches up better with X86 assumptions in isel patterns that add with immediate is more canonical than sub with immediate. Differential Revision: https://reviews.llvm.org/D60020 llvm-svn: 358027
*	[SystemZ] Handle SADDO et.al. and ADD/SUBCARRY	Ulrich Weigand	2018-04-30	1	-0/+214
	This provides an optimized implementation of SADDO/SSUBO/UADDO/USUBO as well as ADDCARRY/SUBCARRY on top of the new CC implementation. In particular, multi-word arithmetic now uses UADDO/ADDCARRY instead of the old ADDC/ADDE logic, which means we no longer need to use "glue" links for those instructions. This also allows making full use of the memory-based instructions like ALSI, which couldn't be recognized due to limitations in the DAG matcher previously. Also, the llvm.sadd.with.overflow et.al. intrinsincs now expand to directly using the ADD instructions and checking for a CC 3 result. llvm-svn: 331203