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| author | Daniel Dunbar <daniel@zuster.org> | 2012-03-05 21:02:05 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2012-03-05 21:02:05 +0000 |
| commit | 7034fb6c7be710883a970f82cb2da97bf1cf5cda (patch) | |
| tree | 2e94bfe57abd9a1e9add08766ea59667d6583eff /lib/AST/DeclBase.cpp | |
| parent | d38f79543136ba68cd14b1dab0856474df1fbfd5 (diff) | |
ASTContext: Don't use nothrow specifications on the new operators for allocating
from the ASTContext.
- Doing so requires the compiler to generate null checks against the returned
result, but the BumpPtrAllocator never returns null pointers.
- The optimizer can usually eliminate such checks, but not always, so this
gives us tighter codegen in some places.
- It would be really nice if we could just use __builtin_unreachable or
something to tell the optimizer that the allocator never returns null, but
LLVM isn't currently that smart.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152060 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/DeclBase.cpp')
0 files changed, 0 insertions, 0 deletions