Andrew Trick bdcfd58034 Add TargetRegisterInfo::reverseLocalAssignment hook. ... This hook reverses the order of assignment for local live ranges. This will generally allocate shorter local live ranges first. For targets with many registers, this could reduce regalloc compile time by a large factor. It should still achieve optimal coloring; however, it can change register eviction decisions. It is disabled by default for two reasons: (1) Top-down allocation is simpler and easier to debug for targets that don't benefit from reversing the order. (2) Bottom-up allocation could result in poor evicition decisions on some targets affecting the performance of compiled code. llvm-svn: 197001		2013-12-11 03:40:15 +00:00
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llvm	Add TargetRegisterInfo::reverseLocalAssignment hook.	2013-12-11 03:40:15 +00:00
llvm-c	Add a Scalarizer pass.	2013-11-22 16:58:05 +00:00