bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[SystemZ] Reimplent SchedModel IssueWidth and WriteRes/ReadAdvance mappings.	Jonas Paulsson	2018-07-20	1	-4/+4
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	As a consequence of recent discussions (http://lists.llvm.org/pipermail/llvm-dev/2018-May/123164.html), this patch changes the SystemZ SchedModels so that the IssueWidth is 6, which is the decoder capacity, and NumMicroOps become the number of decoder slots needed per instruction. In addition, the SchedWrite latencies now match the MachineInstructions def-operand indexes, and ReadAdvances have been added on instructions with one register operand and one memory operand. Review: Ulrich Weigand https://reviews.llvm.org/D47008 llvm-svn: 337538
*	[SystemZ] Handle SADDO et.al. and ADD/SUBCARRY	Ulrich Weigand	2018-04-30	1	-0/+140
	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