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| author | Manman Ren <manman.ren@gmail.com> | 2014-03-31 21:06:36 +0000 |
|---|---|---|
| committer | Manman Ren <manman.ren@gmail.com> | 2014-03-31 21:06:36 +0000 |
| commit | 63efd8e7e68bcc066aaf2e65cc119191373c8868 (patch) | |
| tree | d9f5f43fa43baea01e14fc0e45b054c9638f9b36 /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | f751d6272d0ab6c049a383302961276c0e5fc5dc (diff) | |
| download | llvm-63efd8e7e68bcc066aaf2e65cc119191373c8868.zip llvm-63efd8e7e68bcc066aaf2e65cc119191373c8868.tar.gz llvm-63efd8e7e68bcc066aaf2e65cc119191373c8868.tar.bz2 | |
Register allocator: set CSRFirstUseCost to 5 for ARM64.
A value of 5 means if we have a split or spill option that has a really
low cost (1 << 14 is the entry frequency), we will choose to spill
or split the really cold path before using a callee-saved register.
This gives us the performance benefit on SPECInt2k and is also conservative.
rdar://16162005
llvm-svn: 205248
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
0 files changed, 0 insertions, 0 deletions