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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-22 22:48:56 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-22 22:48:56 +0000 |
| commit | 2bfb32468404eb68dcc1b69a34336794b20e3f33 (patch) | |
| tree | d7b5fd2a766a86e0b51f4620681a9a7c5ef7a474 /lib/CodeGen/MachineVerifier.cpp | |
| parent | 432a8142ef8efc4978ceb8d257a21240e2d29777 (diff) | |
Be more strict about detecting multi-use blocks for isolation.
When a block has exactly two uses and the register is both live-in and live-out,
don't isolate the block. We would be inserting two copies, so we haven't really
made any progress.
If the live-in and live-out values separate into disconnected components after
splitting, we would be making progress. We can't detect that for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117169 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineVerifier.cpp')
0 files changed, 0 insertions, 0 deletions