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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-22 22:48:56 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-22 22:48:56 +0000 |
| commit | 4cf8fe31bb7d84146d353c49b877f9e2a37510d0 (patch) | |
| tree | 849931880f9f8cc5db778f20068baa26c6b1667c /llvm/lib/CodeGen/MachineVerifier.cpp | |
| parent | 2b427c7fb0fb28e618748cb0af2513879b20b1ae (diff) | |
| download | llvm-4cf8fe31bb7d84146d353c49b877f9e2a37510d0.zip llvm-4cf8fe31bb7d84146d353c49b877f9e2a37510d0.tar.gz llvm-4cf8fe31bb7d84146d353c49b877f9e2a37510d0.tar.bz2 | |
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.
llvm-svn: 117169
Diffstat (limited to 'llvm/lib/CodeGen/MachineVerifier.cpp')
0 files changed, 0 insertions, 0 deletions