[PATCH] D25212: Add support to tune jump tables

[Evandro Menezes via llvm-commits]

evandro created this revision.
evandro added reviewers: hans, t.p.northover.
evandro added subscribers: spop, llvm-commits.
evandro set the repository for this revision to rL LLVM.

This patch considers a minimum limit that a target may set to the number of destination addresses in a jump table, as well as, when some conditions are equal, whether a jump table should be split in smaller jump tables or lengthen the if-then-else chain to handle remaining cases.


Repository:
  rL LLVM

https://reviews.llvm.org/D25212

Files:
  llvm/include/llvm/Target/TargetLowering.h
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64Subtarget.cpp
  llvm/lib/Target/AArch64/AArch64Subtarget.h
  llvm/test/CodeGen/AArch64/max-jump-table.ll

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