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| author | Andrew Trick <atrick@apple.com> | 2011-02-04 03:18:17 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-02-04 03:18:17 +0000 |
| commit | 92e946630d5f9bb092853b93501387dd216899b9 (patch) | |
| tree | d8efcc7cbac11a9c8560e53ccb8a036a1063ecbf /cmake | |
| parent | f827cd717b63fd3f1d9ad16e69087c65e9af8c82 (diff) | |
| download | llvm-92e946630d5f9bb092853b93501387dd216899b9.tar.gz llvm-92e946630d5f9bb092853b93501387dd216899b9.tar.bz2 llvm-92e946630d5f9bb092853b93501387dd216899b9.tar.xz | |
Introducing a new method of tracking register pressure. We can't
precisely track pressure on a selection DAG, but we can at least keep
it balanced. This design accounts for various interesting aspects of
selection DAGS: register and subregister copies, glued nodes, dead
nodes, unused registers, etc.
Added SUnit::NumRegDefsLeft and ScheduleDAGSDNodes::RegDefIter.
Note: I disabled PrescheduleNodesWithMultipleUses when register
pressure is enabled, based on no evidence other than I don't think it
makes sense to have both enabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124853 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
0 files changed, 0 insertions, 0 deletions