--- /dev/null
+# RUN: llc -mtriple=x86_64-apple-macos %s -start-before=livedebugvalues -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
+# CHECK: DW_TAG_subprogram
+# Test that LiveDebugValues can handle MBBs that are not reachable in a RPOT.
+--- |
+ define hidden zeroext i1 @__foo_block_invoke(i8* nocapture noundef readonly %.block_descriptor, i64 noundef %type) !dbg !7 {
+ entry:
+ unreachable
+ do.body.i129.i: ; preds = %if.else6.i128.i
+ unreachable
+ }
+ !llvm.dbg.cu = !{!3}
+ !llvm.module.flags = !{!5, !6}
+ !2 = !{}
+ !3 = distinct !DICompileUnit(language: DW_LANG_C99, file: !4, producer: "clang", runtimeVersion: 0, emissionKind: FullDebug)
+ !4 = !DIFile(filename: "t.c", directory: "/")
+ !5 = !{i32 2, !"Debug Info Version", i32 3}
+ !6 = !{i32 1, !"LTOPostLink", i32 1}
+ !7 = distinct !DISubprogram(name: "__foo_block_invoke", scope: !4, file: !4, line: 573, type: !9, scopeLine: 573, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !3, retainedNodes: !2)
+ !9 = !DISubroutineType(types: !2)
+ !11 = !DILocalVariable(name: ".block_descriptor", arg: 1, scope: !7, file: !4, line: 557, type: !12, flags: DIFlagArtificial)
+ !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
+ !13 = !DICompositeType(tag: DW_TAG_structure_type, name: "__block_literal_1", scope: !4, file: !4, line: 557, size: 392, elements: !2)
+ !15 = !DILocation(line: 558, column: 7, scope: !7)
+name: __foo_block_invoke
+body: |
+ bb.0.entry:
+ DBG_VALUE $rdi, $noreg, !11, !DIExpression(), debug-location !15
+ $ecx = MOV32rr undef $edi, implicit $dil, debug-location !15
+ bb.2:
+ successors:
+ TRAP
+ bb.21.do.body.i129.i (address-taken):