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| author | Duncan Sands <baldrick@free.fr> | 2010-11-05 15:20:29 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2010-11-05 15:20:29 +0000 |
| commit | 69300a2f47541a32cf453c857b2a6075c0c65632 (patch) | |
| tree | d4f2469d7c25240ca0642c9f21b3b38b0683581d /lib/MC/MachObjectWriter.cpp | |
| parent | f8254d647352f8f194b4753a25d582758289e497 (diff) | |
When passing a parameter using the 'byval' mechanism, inline code needs to be used
to perform the copy, which may be of lots of memory [*]. It would be good if the
fall-back code generated something reasonable, i.e. did the copy in a loop, rather
than vast numbers of loads and stores. Add a note about this. Currently target
specific code seems to always kick in so this is more of a theoretical issue rather
than a practical one now that X86 has been fixed.
[*] It's amazing how often people pass mega-byte long arrays by copy...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118275 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/MachObjectWriter.cpp')
0 files changed, 0 insertions, 0 deletions