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| author | Evan Cheng <evan.cheng@apple.com> | 2010-07-23 22:39:59 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-07-23 22:39:59 +0000 |
| commit | 3144687df78731ac4ddbc716a24b951678a73f57 (patch) | |
| tree | c1c0c927d6d01408a025922187ccdd674b466718 /lib/CodeGen/AsmPrinter/DwarfDebug.cpp | |
| parent | f64a7d49a0cdc8587f5b79bb2ac7be5fe56c1746 (diff) | |
- Allow target to specify when is register pressure "too high". In most cases,
it's too late to start backing off aggressive latency scheduling when most
of the registers are in use so the threshold should be a bit tighter.
- Correctly handle live out's and extract_subreg etc.
- Enable register pressure aware scheduling by default for hybrid scheduler.
For ARM, this is almost always a win on # of instructions. It's runtime
neutral for most of the tests. But for some kernels with high register
pressure it can be a huge win. e.g. 464.h264ref reduced number of spills by
54 and sped up by 20%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109279 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
0 files changed, 0 insertions, 0 deletions