[all-commits] [llvm/llvm-project] 1deee5: Fix crash when emitting NullReturn guards for func...

[Jon Roelofs via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1deee5cacbb76578367186d7ff2937b6fa79b827
      https://github.com/llvm/llvm-project/commit/1deee5cacbb76578367186d7ff2937b6fa79b827
  Author: Jon Roelofs <jonathan_roelofs at apple.com>
  Date:   2021-01-21 (Thu, 21 Jan 2021)

  Changed paths:
    M clang/lib/CodeGen/CGObjCMac.cpp
    A clang/test/CodeGenObjC/null-check-bool-ret.m

  Log Message:
  -----------
  Fix crash when emitting NullReturn guards for functions returning BOOL

CodeGenModule::EmitNullConstant() creates constants with their "in memory"
type, not their "in vregs" type. The one place where this difference matters is
when the type is _Bool, as that is an i1 when in vregs and an i8 in memory.

Fixes: rdar://73361264