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Matthias Braun 892af54a91 ARMLoadStoreOptimizer: Rewrite LDM/STM matching logic.
This improves the logic in several ways and is a preparation for
followup patches:
- First perform an analysis and create a list of merge candidates, then
  transform. This simplifies the code in that you have don't have to
  care to much anymore that you may be holding iterators to
  MachineInstrs that get removed.
- Analyze/Transform basic blocks in reverse order. This allows to use
  LivePhysRegs to find free registers instead of the RegisterScavenger.
  The RegisterScavenger will become less precise in the future as it
  relies on the deprecated kill-flags.
- Return the newly created node in MergeOps so there's no need to look
  around in the schedule to find it.
- Rename some MBBI iterators to InsertBefore to make their role clear.
- General code cleanup.

Differential Revision: http://reviews.llvm.org/D10140

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241920 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-10 18:08:49 +00:00
autoconf
bindings
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docs Add support for fast-math flags to the FCmp instruction. 2015-07-10 12:52:00 +00:00
examples
include [InstSimplify] Fold away ord/uno fcmps when nnan is present. 2015-07-10 14:02:02 +00:00
lib ARMLoadStoreOptimizer: Rewrite LDM/STM matching logic. 2015-07-10 18:08:49 +00:00
projects
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test ARMLoadStoreOptimizer: Rewrite LDM/STM matching logic. 2015-07-10 18:08:49 +00:00
tools [llvm-stress] Enhance scalar type selection from command line. 2015-07-10 10:01:47 +00:00
unittests Add support for fast-math flags to the FCmp instruction. 2015-07-10 12:52:00 +00:00
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