[all-commits] [llvm/llvm-project] da0ded: [X86] Fix CodeGen crash for arrays of empty struct...

[MaoJian via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da0ded191f82be4ae98eb6eefc01175bd0855ca8
      https://github.com/llvm/llvm-project/commit/da0ded191f82be4ae98eb6eefc01175bd0855ca8
  Author: MaoJian <maojian16 at huawei.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M clang/lib/CodeGen/Targets/X86.cpp
    A clang/test/CodeGen/X86/empty-struct-union-array.c

  Log Message:
  -----------
  [X86] Fix CodeGen crash for arrays of empty structs and unions (#224203)

getFPTypeAtOffset() divides by the allocation size of an array element
when normalizing IROffset. Empty structs and unions have zero allocation
size, so arrays of these types can cause a division-by-zero during X86
ABI lowering.

Return nullptr for zero-sized array elements and add CodeGen tests for
empty struct and union arrays.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications