[all-commits] [llvm/llvm-project] 0abb77: [LLVM] [X86] Fix integer overflows in frame layout...

[Wesley Wiser via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0abb7791614947bc24931dd851ade31d02496977
      https://github.com/llvm/llvm-project/commit/0abb7791614947bc24931dd851ade31d02496977
  Author: Wesley Wiser <wwiser at gmail.com>
  Date:   2024-08-19 (Mon, 19 Aug 2024)

  Changed paths:
    M llvm/lib/CodeGen/PrologEpilogInserter.cpp
    M llvm/lib/Target/X86/X86FrameLowering.cpp
    M llvm/lib/Target/X86/X86RegisterInfo.cpp
    M llvm/lib/Target/X86/X86RegisterInfo.h
    A llvm/test/CodeGen/X86/avx512f-large-stack.ll
    M llvm/test/CodeGen/X86/huge-stack.ll
    M llvm/test/CodeGen/X86/win64-stackprobe-overflow.ll

  Log Message:
  -----------
  [LLVM] [X86] Fix integer overflows in frame layout for huge frames (#101840)

Fix 32-bit integer overflows in the X86 target frame layout when dealing
with frames larger than 4gb. When this occurs, we'll scavenge a scratch
register to be able to hold the correct stack offset for frame locals.

This completes reapplying #84114.

Fixes #48911
Fixes #75944 
Fixes #87154



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