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| author | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-01-22 23:08:45 +0000 |
|---|---|---|
| committer | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-01-22 23:08:45 +0000 |
| commit | e88280a4224730dcf8076e0d9a20973c5761fd06 (patch) | |
| tree | 810e24a7f07d85ebc93d7e3d090b753c47db5aad /lib/Target/PowerPC/PowerPCTargetMachine.cpp | |
| parent | 8abff7945a326a9ca1e688273681c7c9ca6df6e3 (diff) | |
Add option to join live intervals. Two intervals are joined if there
is a move between two registers, at least one of the registers is
virtual and the two live intervals do not overlap.
This results in about 40% reduction in intervals, 30% decrease in the
register allocators running time and a 20% increase in peephole
optimizations (mainly move eliminations).
The option can be enabled by passing -join-liveintervals where
appropriate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10965 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PowerPCTargetMachine.cpp')
0 files changed, 0 insertions, 0 deletions