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Add MachineLoopRanges analysis.

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A MachineLoopRange contains the intervals of slot indexes covered by the blocks
in a loop. This representation of the loop blocks is more efficient to compare
against interfering registers during register coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121917 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-12-15 23:41:23 +00:00
parent 7a905a82f7
commit ceadc01e91
5 changed files with 176 additions and 0 deletions
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5
include/llvm/CodeGen/Passes.h
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@@ -45,6 +45,11 @@ namespace llvm {
///
extern char &MachineLoopInfoID;
/// MachineLoopRanges pass - This pass is an on-demand loop coverage
/// analysis pass.
///
extern char &MachineLoopRangesID;
/// MachineDominators pass - This pass is a machine dominators analysis pass.
///
extern char &MachineDominatorsID;