diff --git a/llvm/test/DebugInfo/X86/machine-function-splitter.ll b/llvm/test/DebugInfo/X86/machine-function-splitter.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/DebugInfo/X86/machine-function-splitter.ll
@@ -0,0 +1,115 @@
+; RUN: llc -O2 %s -split-machine-functions -mtriple=x86_64 -filetype=obj -o %t && llvm-dwarfdump -debug-info -v %t | FileCheck --check-prefix=MFS-SECTIONS %s
+; RUN: llc -O2 %s -split-machine-functions -mtriple=x86_64 -o - | FileCheck --check-prefix=MFS-SECTIONS-ASM %s
+; RUN: llc -O2 %s -split-machine-functions -mtriple=x86_64 -filetype=obj -o %t && llvm-dwarfdump  -debug-line %t | FileCheck --check-prefix=MFS-SECTIONS-LINE-TABLE %s
+
+; From:
+; 1  int foo(int a) {
+; 2    if (a > 20)
+; 3      return bar();
+; 4    else
+; 5      return baz();
+; 6  }
+
+; MFS-SECTIONS: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
+; MFS-SECTIONS: DW_AT_ranges [DW_FORM_sec_offset]
+; MFS-SECTIONS: [{{.*}}) ".text.split._Z3fooi"
+; MFS-SECTIONS: [{{.*}}) ".text.hot."
+; MFS-SECTIONS-ASM: _Z3fooi:
+; MFS-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
+; MFS-SECTIONS-ASM-NEXT: .loc 1 2 9 prologue_end
+; MFS-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
+; MFS-SECTIONS-ASM-NEXT: .loc 1 2 7 is_stmt 0
+; MFS-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
+; MFS-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
+; MFS-SECTIONS-ASM-NEXT: .loc 1 6 1 is_stmt 1
+; MFS-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
+; MFS-SECTIONS-ASM-NEXT: .cfi_endproc
+; MFS-SECTIONS-ASM-NEXT: .section .text.split._Z3fooi,"ax",@progbits
+; MFS-SECTIONS-ASM: _Z3fooi.cold:
+; MFS-SECTIONS-ASM: .LBB_END0_{{[0-9]+}}:
+; MFS-SECTIONS-ASM: .size	_Z3fooi.cold, .LBB_END0_{{[0-9]+}}-_Z3fooi.cold
+; MFS-SECTIONS-ASM: .Lfunc_end0:
+; MFS-SECTIONS-ASM: .Ldebug_ranges0:
+; MFS-SECTIONS-ASM-NEXT:	.quad	_Z3fooi.cold
+; MFS-SECTIONS-ASM-NEXT:	.quad	.LBB_END0_{{[0-9]+}}
+; MFS-SECTIONS-ASM-NEXT:	.quad	.Lfunc_begin0
+; MFS-SECTIONS-ASM-NEXT:	.quad	.Lfunc_end0
+; MFS-SECTIONS-ASM-NEXT:	.quad	0
+; MFS-SECTIONS-ASM-NEXT:	.quad	0
+; MFS-SECTIONS-LINE-TABLE:      0x0000000000000000 1 0 1 0 0 is_stmt
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000005 2 9 1 0 0 is_stmt prologue_end
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000008 2 7 1 0 0
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x000000000000000e 0 7 1 0 0
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000016 6 1 1 0 0 is_stmt
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x000000000000001b 6 1 1 0 0 is_stmt end_sequence
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000000 0 1 1 0 0
+; MFS-SECTIONS-LINE-TABLE-NEXT: 0x000000000000000a 0 1 1 0 0 end_sequence
+
+; Function Attrs: noinline nounwind optnone uwtable
+define dso_local i32 @_Z3fooi(i32 %0) !dbg !7 !prof !34 !section_prefix !35 {
+  %2 = alloca i32, align 4
+  %3 = alloca i32, align 4
+  store i32 %0, i32* %3, align 4
+  call void @llvm.dbg.declare(metadata i32* %3, metadata !11, metadata !DIExpression()), !dbg !12
+  %4 = load i32, i32* %3, align 4, !dbg !13
+  %5 = icmp sgt i32 %4, 20, !dbg !15
+  br i1 %5, label %6, label %8, !dbg !16, !prof !36
+
+6:                                                ; preds = %1
+  %7 = call i32 @bar()
+  store i32 %7, i32* %2, align 4, !dbg !17
+  br label %10, !dbg !17
+
+8:                                                ; preds = %1
+  %9 = call i32 @baz()
+  store i32 %9, i32* %2, align 4, !dbg !18
+  br label %10, !dbg !18
+
+10:                                                ; preds = %8, %6
+  %11 = load i32, i32* %2, align 4, !dbg !19
+  ret i32 %11, !dbg !19
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.declare(metadata, metadata, metadata)
+declare i32 @bar()
+declare i32 @baz()
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !20}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0 (git@github.com:google/llvm-propeller.git f9421ebf4b3d8b64678bf6c49d1607fdce3f50c5)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
+!1 = !DIFile(filename: "debuginfo.cc", directory: "/")
+!2 = !{}
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{!10, !10}
+!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!11 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10)
+!12 = !DILocation(line: 1, column: 13, scope: !7)
+!13 = !DILocation(line: 2, column: 7, scope: !14)
+!14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 7)
+!15 = !DILocation(line: 2, column: 9, scope: !14)
+!16 = !DILocation(line: 2, column: 7, scope: !7)
+!17 = !DILocation(line: 3, column: 5, scope: !14)
+!18 = !DILocation(line: 5, column: 5, scope: !14)
+!19 = !DILocation(line: 6, column: 1, scope: !7)
+!20 = !{i32 1, !"ProfileSummary", !21}
+!21 = !{!22, !23, !24, !25, !26, !27, !28, !29}
+!22 = !{!"ProfileFormat", !"InstrProf"}
+!23 = !{!"TotalCount", i64 10000}
+!24 = !{!"MaxCount", i64 10}
+!25 = !{!"MaxInternalCount", i64 1}
+!26 = !{!"MaxFunctionCount", i64 1000}
+!27 = !{!"NumCounts", i64 3}
+!28 = !{!"NumFunctions", i64 5}
+!29 = !{!"DetailedSummary", !30}
+!30 = !{!31, !32, !33}
+!31 = !{i32 10000, i64 100, i32 1}
+!32 = !{i32 999900, i64 100, i32 1}
+!33 = !{i32 999999, i64 1, i32 2}
+!34 = !{!"function_entry_count", i64 7000}
+!35 = !{!"function_section_prefix", !"hot"}
+!36 = !{!"branch_weights", i32 6999, i32 1}