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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-11-11 00:19:20 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-11-11 00:19:20 +0000 |
| commit | c400670bf1f7fce0ef09aa649c6d7863cf39fea6 (patch) | |
| tree | 5f19b39cbcc88a6408dce205ba2b0cc6fd9c9b58 /llvm/lib/CodeGen/MachineBasicBlock.cpp | |
| parent | fd0ad36c28065c4e069e4fa6f7c9e6e55bc4051b (diff) | |
| download | bcm5719-llvm-c400670bf1f7fce0ef09aa649c6d7863cf39fea6.tar.gz bcm5719-llvm-c400670bf1f7fce0ef09aa649c6d7863cf39fea6.zip | |
Insert two blank SlotIndexes between basic blocks instead of just one.
This is the first small step towards using closed intervals for liveness instead
of the half-open intervals we're using now.
We want to be able to distinguish between a SlotIndex that represents a variable
being live-out of a basic block, and an index representing a variable live-in to
its successor.
That requires two separate indexes between blocks. One for live-outs and one for
live-ins.
With this change, getMBBEndIdx(MBB).getPrevSlot() becomes stable so it stays
greater than any instructions inserted at the end of MBB.
llvm-svn: 118747
Diffstat (limited to 'llvm/lib/CodeGen/MachineBasicBlock.cpp')
0 files changed, 0 insertions, 0 deletions
