Commits
Mark Lacey committed e2cbc5b1c39
Relax verification of dealloc_stack. Allow it to have undef as an operand. This can happen when NoReturnFolding does RAUW for the instructions that come after a @noreturn function, replacing the uses of those instructions in blocks that are unreachable. These instructions end up getting deleted during diagnose unreachable when we remove the unreachable code. Fixes SR-967 / rdar://problem/25882880.