[all-commits] [llvm/llvm-project] 4b24e9: [wasm-ld] Define a `__heap_end` symbol marking the...

[Dan Gohman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4b24e9be175d75c92e5adb40622fd7524abcef60
      https://github.com/llvm/llvm-project/commit/4b24e9be175d75c92e5adb40622fd7524abcef60
  Author: Dan Gohman <dev at sunfishcode.online>
  Date:   2022-10-17 (Mon, 17 Oct 2022)

  Changed paths:
    M lld/test/wasm/export-all.s
    M lld/test/wasm/mutable-global-exports.s
    M lld/wasm/Driver.cpp
    M lld/wasm/Symbols.cpp
    M lld/wasm/Symbols.h
    M lld/wasm/Writer.cpp

  Log Message:
  -----------
  [wasm-ld] Define a `__heap_end` symbol marking the end of allocated memory.

Define a `__heap_end` symbol that marks the end of the memory region
that starts at `__heap_base`. This will allow malloc implementations to
know how much memory they can use at `__heap_base` even if someone has
done a `memory.grow` before they can initialize their state.

Differential Revision: https://reviews.llvm.org/D136110