[PATCH] D71786: RFC: [Support] On Windows, add optional support for rpmalloc

[Alexandre Ganea via Phabricator via llvm-commits]

aganea added a comment.

In D71786#1809819 <https://reviews.llvm.org/D71786#1809819>, @riccibruno wrote:

> Is rpcmalloc using large pages by default if possible ? I have been toying with using large pages for some of the bump-pointer allocators in clang, namely the allocator of `ASTContext` and the allocator of `Sema`, and I am getting a ~5% improvement in parsing speed.


Not by default, but you can use `set LLVM_RPMALLOC_PAGESIZE=2M` or `set LLVM_RPMALLOC_PAGESIZE=1G` to enable large pages. However I realize that is broken (crashes), I'll investigate and get back.


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