- Prep work for non-moving promotion.
- The generations still have different alignment offsets.
- Old-space pages now participate in the page cache.
- Fix boolean/null bit tricks to assert the right requirements on the alignment of a page's first object.
TEST=ci
Change-Id: I4369d8c6af73228e162c226d411914868bafed33
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/260401
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
iOS appears not to allow any single virtual memory allocation to exceed ~700MB.
iOS appears to limit the total amount of allocated virtual memory to amount of physical memory available, even virtual memory that is reserved by not committed.
So instead of trying to allocate the full 4GB region for compressed pointer, allocate the largest power-of-two that succeeds, and speculate that further allocations to into the same 4GB region.
TEST=none
Change-Id: Ib45f7ece59e1adb96d175ae861b984c0c6737549
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210640
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Ryan Macnak