Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/CodeGen/MIR/X86/expected-basic-block-at-start-of-body.mir

@@ -0,0 +1,40 @@
+# RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
+
+--- |
+
+  define i32 @foo(i32 %a) {
+  entry:
+    %0 = icmp sle i32 %a, 10
+    br i1 %0, label %less, label %exit
+
+  less:                                             ; preds = %entry
+    ret i32 0
+
+  exit:                                             ; preds = %entry
+    ret i32 %a
+  }
+
+...
+---
+name:            foo
+tracksRegLiveness: true
+liveins:
+  - { reg: '%edi' }
+body: |
+  ; CHECK: [[@LINE+1]]:3: expected a basic block definition before instructions
+  successors: %bb.1.less, %bb.2.exit
+    liveins: %edi 44
+
+    CMP32ri8 %edi, 10, implicit-def %eflags
+    JG_1 %bb.2.exit, implicit killed %eflags
+
+  bb.1.less:
+    %eax = MOV32r0 implicit-def dead %eflags
+    RETQ killed %eax
+
+  bb.2.exit:
+    liveins: %edi
+
+    %eax = COPY killed %edi
+    RETQ killed %eax
+...