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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-01-29 01:29:28 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-01-29 01:29:28 +0000 |
| commit | 9f946a24d9e69559d1e0aeb6d128c2fa19846c92 (patch) | |
| tree | 4290a59d915f696754463e6fbf20981297d60dd3 /lib/Target | |
| parent | 685c23e75842e64145fe319efd792abe72a827dd (diff) | |
| download | external_llvm-9f946a24d9e69559d1e0aeb6d128c2fa19846c92.zip external_llvm-9f946a24d9e69559d1e0aeb6d128c2fa19846c92.tar.gz external_llvm-9f946a24d9e69559d1e0aeb6d128c2fa19846c92.tar.bz2 | |
Fix some scavenger performance issues.
- Don't call malloc+free in the very hot forward().
- Don't call isTiedToDefOperand().
- Don't create BitVector temporaries.
- Merge DeadRegs into KillRegs.
- Eliminate the early clobber checks, they were irrelevant to scavenging.
- Remove unnecessary code from -Asserts builds.
This speeds up ARM PEI by 3.4x and overall llc -O0 codegen time by 11%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149189 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
0 files changed, 0 insertions, 0 deletions