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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-11-21 02:05:21 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-11-21 02:05:21 +0000 |
| commit | 323d8c3ed72c9e440c2079e8c1954af69357c7cf (patch) | |
| tree | fbdf37ef1d9b9a29f9f7e47b01c4d07f703c1125 /lib/CodeGen/StackSlotColoring.cpp | |
| parent | 983c7fe847dd3f46945f0117ab19345b9c68e88f (diff) | |
Be more clever about calculating live variables through new basic blocks.
When splitting a critical edge, the registers live through the edge are:
- Used in a PHI instruction, or
- Live out from the predecessor, and
- Live in to the successor.
This allows the coalescer to eliminate even more phi joins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89530 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/StackSlotColoring.cpp')
0 files changed, 0 insertions, 0 deletions