malloc, so there should be no functional changes to other code.

These changes are necessary since I have plans to use this allocator in the JIT
memory manager, and it needs a special allocator.

I also added some tests which helped me pinpoint some bugs.

llvm-svn: 76825

a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.

llvm-svn: 54146

for handling bookkeeping for deleted objects, as well as the alist class
template, for keeping lists of objects allocated from Recyclers, and some
related utilities.

llvm-svn: 53210

llvm-svn: 50659

be truncated to 32 bits. This fixes the recent Benchmarks/McCat/09-vor
regression on x86-64, among other things.

llvm-svn: 50372

Bug fix in BumpPtrAllocator: don't assume that all objects have the same alignment.  "Bump" of the pointer for the next allocated object to be of the specified alignment.

llvm-svn: 50362

llvm-svn: 45418

first region, just deallocate all but the last region in the list.

llvm-svn: 41782

Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor.

llvm-svn: 41728

llvm-svn: 34539

llvm-svn: 32340

now cerr, cout, and NullStream resp.

llvm-svn: 32298

llvm-svn: 31927

This fixes the build on OpenBSD and potentially other systems.

llvm-svn: 31550

I'm about to add.  This is similar to, but necessarily different than, the
STL allocator class.

llvm-svn: 31285