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| author | Dan Gohman <gohman@apple.com> | 2008-09-03 15:56:16 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-09-03 15:56:16 +0000 |
| commit | c7367b45469467c3c886a448b59415a9bed9f365 (patch) | |
| tree | 10ec3b43b355ae364669eb50cd59f09495418691 /llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.h | |
| parent | 0eca0571f86ae7cea43a08985d7dcaa27effdbb2 (diff) | |
| download | bcm5719-llvm-c7367b45469467c3c886a448b59415a9bed9f365.tar.gz bcm5719-llvm-c7367b45469467c3c886a448b59415a9bed9f365.zip | |
Fix addRegisterDead and addRegisterKilled to be more thorough
when searching for redundant subregister dead/kill bits.
Previously it was common to see instructions marked like this:
"RET %EAX<imp-use,kill>, %AX<imp-use,kill>"
With this change, addRegisterKilled continues scanning after
finding the %EAX operand, so it proceeds to discover the
redundant %AX kill and eliminates it, producing this:
"RET %EAX<imp-use,kill>"
This currently has no effect on the generated code.
llvm-svn: 55698
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.h')
0 files changed, 0 insertions, 0 deletions
