[all-commits] [llvm/llvm-project] 23d209: [SPARC] Allow overaligned `alloca`s (#107223)

[Koakuma via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 23d209f350f4e51b2a42636ce45d10c6e208252d
      https://github.com/llvm/llvm-project/commit/23d209f350f4e51b2a42636ce45d10c6e208252d
  Author: Koakuma <koachan at protonmail.com>
  Date:   2024-11-03 (Sun, 03 Nov 2024)

  Changed paths:
    M compiler-rt/test/asan/TestCases/alloca_vla_interact.cpp
    M llvm/lib/Target/Sparc/SparcFrameLowering.cpp
    M llvm/lib/Target/Sparc/SparcISelLowering.cpp
    M llvm/lib/Target/Sparc/SparcRegisterInfo.cpp
    M llvm/lib/Target/Sparc/SparcRegisterInfo.h
    M llvm/test/CodeGen/Generic/ForceStackAlign.ll
    M llvm/test/CodeGen/SPARC/2013-05-17-CallFrame.ll
    A llvm/test/CodeGen/SPARC/alloca-align.ll
    R llvm/test/CodeGen/SPARC/fail-alloca-align.ll
    M llvm/test/CodeGen/SPARC/fp128.ll
    M llvm/test/CodeGen/SPARC/stack-align.ll

  Log Message:
  -----------
  [SPARC] Allow overaligned `alloca`s (#107223)

SPARC ABI doesn't use stack realignment, so let LLVM know about it in
`SparcFrameLowering`. This has the side effect of making all overaligned
allocations go through `LowerDYNAMIC_STACKALLOC`, so implement the
missing logic there too for overaligned allocations.
This makes the SPARC backend not crash on overaligned `alloca`s and fix
https://github.com/llvm/llvm-project/issues/89569.



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