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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-15 06:09:08 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-15 06:09:08 +0000 |
| commit | 84ce2908220832675999a0d5be9f9b914c26ea66 (patch) | |
| tree | 82b90235ed1b4b5dd3ec38a9e8d5999d70faa83f /clang/lib/CodeGen | |
| parent | 6fd1b1802f5e748d2e8dfabeb03b62c0d65340ab (diff) | |
| download | bcm5719-llvm-84ce2908220832675999a0d5be9f9b914c26ea66.tar.gz bcm5719-llvm-84ce2908220832675999a0d5be9f9b914c26ea66.zip | |
Calculate liveness on the fly for local registers.
When working top-down in a basic block, substituting physregs for virtregs, the use-def chains are kept up to date. That means we can recognize a virtreg kill by the use-def chain becoming empty.
This makes the fast allocator independent of incoming kill flags.
llvm-svn: 103866
Diffstat (limited to 'clang/lib/CodeGen')
0 files changed, 0 insertions, 0 deletions
