[all-commits] [llvm/llvm-project] 8eae32: Improve stack-clash implementation on x86

[serge-sans-paille via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8eae32188bbaa4ac5943f8a98b3b7e4bbba55698
      https://github.com/llvm/llvm-project/commit/8eae32188bbaa4ac5943f8a98b3b7e4bbba55698
  Author: serge-sans-paille <sguelton at redhat.com>
  Date:   2020-05-25 (Mon, 25 May 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86FrameLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/stack-clash-dynamic-alloca.ll
    M llvm/test/CodeGen/X86/stack-clash-large.ll
    M llvm/test/CodeGen/X86/stack-clash-medium.ll

  Log Message:
  -----------
  Improve stack-clash implementation on x86

- test both 32 and 64 bit version
- probe the tail in dynamic-alloca
- generate more concise code

Differential Revision: https://reviews.llvm.org/D79482