[all-commits] [llvm/llvm-project] 109587: [wasm-ld] Define a `__heap_end` symbol marking the...

[Dan Gohman via All-commits]

  Branch: refs/heads/release/15.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 1095870e8ceddc5371f446f4e7c3473f89a461cd
      https://github.com/llvm/llvm-project/commit/1095870e8ceddc5371f446f4e7c3473f89a461cd
  Author: Dan Gohman <dev at sunfishcode.online>
  Date:   2023-01-10 (Tue, 10 Jan 2023)

  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