Mehdi Amini de92dc3fe2 Interprocedural Register Allocation (IPRA) Analysis ... Add an option to enable the analysis of MachineFunction register usage to extract the list of clobbered registers. When enabled, the CodeGen order is changed to be bottom up on the Call Graph. The analysis is split in two parts, RegUsageInfoCollector is the MachineFunction Pass that runs post-RA and collect the list of clobbered registers to produce a register mask. An immutable pass, RegisterUsageInfo, stores the RegMask produced by RegUsageInfoCollector, and keep them available. A future tranformation pass will use this information to update every call-sites after instruction selection. Patch by Vivek Pandya <vivekvpandya@gmail.com> Differential Revision: http://reviews.llvm.org/D20769 llvm-svn: 272403		2016-06-10 16:19:46 +00:00
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llvm	Interprocedural Register Allocation (IPRA) Analysis	2016-06-10 16:19:46 +00:00
llvm-c	Extract renaming from D19181	2016-05-23 16:38:25 +00:00