[all-commits] [llvm/llvm-project] e37de5: Fix UB in DwarfExpression::emitLegacyZExt()

[adrian-prantl via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e37de5d36e3190283916604342b029859129e2a4
      https://github.com/llvm/llvm-project/commit/e37de5d36e3190283916604342b029859129e2a4
  Author: Adrian Prantl <aprantl at apple.com>
  Date:   2022-01-25 (Tue, 25 Jan 2022)

  Changed paths:
    M llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
    M llvm/test/DebugInfo/X86/convert-debugloc.ll

  Log Message:
  -----------
  Fix UB in DwarfExpression::emitLegacyZExt()

A shift-left > 63 triggers a UBSAN failure. This patch kicks the can
down the road (to the consumer) by emitting a more compact
representation of the shift computation in DWARF expressions.

Differential Revision: https://reviews.llvm.org/D118183


  Commit: 37ef303aa71a1594d42587871d2e1eb1deeeff0f
      https://github.com/llvm/llvm-project/commit/37ef303aa71a1594d42587871d2e1eb1deeeff0f
  Author: Adrian Prantl <aprantl at apple.com>
  Date:   2022-01-25 (Tue, 25 Jan 2022)

  Changed paths:
    M llvm/include/llvm/Support/AllocatorBase.h

  Log Message:
  -----------
  Add missing include diagnosed by the modules build.


Compare: https://github.com/llvm/llvm-project/compare/a676bdb5d65b...37ef303aa71a