2b3fa322b8
Don't look for empty live ranges in the unions.
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Empty live ranges represent undef and still get allocated, but they
won't appear in LiveIntervalUnions.
Patch by Patrik Hägglund!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156685 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-12 00:33:28 +00:00
789d5d85ba
Moved LiveRangeEdit.h so that it can be called from other parts of the backend, not just libCodeGen
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153906 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02 22:44:18 +00:00
e4fd907e72
Use uint16_t to store register overlaps to reduce static data.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152001 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-04 10:43:23 +00:00
a8bd9a68f7
Sink spillInterferences into RABasic.
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This helper method is too simplistic for RAGreedy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11 22:52:14 +00:00
ccc9581e8b
Move RegAllocBase into its own cpp file separate from RABasic.
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No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147972 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11 22:28:30 +00:00
