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
1 file changed
