Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/MIR/X86/undefined-stack-object.mir

@@ -1,29 +0,0 @@
-# RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
---- |
-
-  define i32 @test(i32 %a) {
-  entry:
-    %b = alloca i32
-    store i32 %a, i32* %b
-    %c = load i32, i32* %b
-    ret i32 %c
-  }
-
-...
----
-name:            test
-tracksRegLiveness: true
-registers:
-  - { id: 0, class: gr32 }
-frameInfo:
-  maxAlignment:  4
-stack:
-  - { id: 0, name: b, size: 4, alignment: 4 }
-body: |
-  bb.0.entry:
-    %0 = COPY %edi
-    ; CHECK: [[@LINE+1]]:13: use of undefined stack object '%stack.2'
-    MOV32mr %stack.2, 1, _, 0, _, %0
-    %eax = COPY %0
-    RETQ %eax
-...