[PATCH] D42030: [WebAssembly] Define __heap_base global

[Sam Clegg via Phabricator via llvm-commits]

sbc100 added a comment.

The musl malloc implementation seems to choose to use brk() directly over mmap, which means it will always be working with a contiguous region, so there shouldn't be any fragmentation in this case.

Even in the mmap case fragmentation should be problem according the comment in the code `Expand the heap in-place if brk can be used, or otherwise via mmap, using an exponential lower bound on growth by mmap to make fragmentation asymptotically irrelevant.`


Repository:
  rLLD LLVM Linker

https://reviews.llvm.org/D42030