[llvm] 5b9c2b1 - Revert "[LiveDebugValues][NFC] Add instr-ref tests, adapt old tests"

Jeremy Morse via llvm-commits llvm-commits at lists.llvm.org
Wed Aug 26 09:19:55 PDT 2020


Author: Jeremy Morse
Date: 2020-08-26T17:19:13+01:00
New Revision: 5b9c2b1bea78cdb62bad802b7d3d32dfeb1438a7

URL: https://github.com/llvm/llvm-project/commit/5b9c2b1bea78cdb62bad802b7d3d32dfeb1438a7
DIFF: https://github.com/llvm/llvm-project/commit/5b9c2b1bea78cdb62bad802b7d3d32dfeb1438a7.diff

LOG: Revert "[LiveDebugValues][NFC] Add instr-ref tests, adapt old tests"

Asan has picked up a memory leak, which will require some investigation:

http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/45372/steps/check-llvm%20asan/logs/stdio

This reverts commit 60db26a66d5346b2feae279f6c928bde48078893.

Added: 
    

Modified: 
    llvm/test/DebugInfo/MIR/Mips/last-inst-bundled.mir
    llvm/test/DebugInfo/MIR/X86/kill-after-spill.mir
    llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
    llvm/test/DebugInfo/MIR/X86/live-debug-values-bad-transfer.mir
    llvm/test/DebugInfo/MIR/X86/live-debug-values.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues-ignores-metaInstructions.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir

Removed: 
    llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_downgradefeedback_loop.mir
    llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_insensitive_downgrade.mir
    llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_path_lengths.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_load_in_loop.mir
    llvm/test/DebugInfo/MIR/X86/livedebugvalues_many_loop_heads.mir


################################################################################
diff  --git a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_downgradefeedback_loop.mir b/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_downgradefeedback_loop.mir
deleted file mode 100644
index 540296f9b54b..000000000000
--- a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_downgradefeedback_loop.mir
+++ /dev/null
@@ -1,100 +0,0 @@
---- |
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - -experimental-debug-variable-locations -emulate-old-livedebugvalues=0 | FileCheck %s -implicit-check-not=DBG_VALUE
-
-  ; This test has two loop heads (bb1, bb2) and a PHI going into bb5. In bb2,
-  ; we need to explore / downgrade from the value of ebx def'd in the entry
-  ; block, through the first loop head, then propose and confirm a PHI at the
-  ; second loop head.
-
-  ;; Checks represent each DBG_VALUE in the MIR below, and the a live-in
-  ;; DBG_VALUE at the start of each block added by LiveDebugValues.
-
-  ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $eax
-  ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.5.bb5:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.6:
-  ; CHECK:       DBG_VALUE $ebx
-  ; CHECK-LABEL: bb.7:
-  ; CHECK:       DBG_VALUE $ebx
-
-  define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
-  entry:
-    br label %bb1, !dbg !17
-  bb1:
-    br label %bb2, !dbg !17
-  bb2:
-    br label %bb3, !dbg !17
-  bb3:
-    br label %bb3, !dbg !17
-  bb4:
-    br label %bb3, !dbg !17
-  bb5:
-    ret i32 0, !dbg !17
-  }
-
-  !llvm.dbg.cu = !{!0}
-  !llvm.module.flags = !{!7, !8, !9, !10}
-  !llvm.ident = !{!11}
-  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
-  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
-  !2 = !{}
-  !3 = !{!4}
-  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
-  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
-  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-  !7 = !{i32 2, !"Dwarf Version", i32 4}
-  !8 = !{i32 2, !"Debug Info Version", i32 3}
-  !9 = !{i32 1, !"wchar_size", i32 2}
-  !10 = !{i32 7, !"PIC Level", i32 2}
-  !11 = !{!"clang version 10.0.0"}
-  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
-  !13 = !DISubroutineType(types: !14)
-  !14 = !{!6, !6}
-  !15 = !{!16}
-  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
-  !17 = !DILocation(line: 10, scope: !12)
-
-...
----
-name: _Z8bb_to_bb
-body:  |
-  bb.0.entry:
-    successors: %bb.1
-    $ebx = MOV32ri 0, debug-location !17
-    $eax = COPY $ebx
-    DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
-  bb.1.bb1:
-    successors: %bb.2
-    $eax = COPY $ebx, debug-location !17
-    $ebx = COPY $ecx, debug-location !17
-    DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
-  bb.2.bb2:
-    successors: %bb.3, %bb.4
-    JCC_1 %bb.4, 4, implicit $eflags
-  bb.3.bb3:
-    successors: %bb.5
-    $ebx = MOV32ri 0, debug-location !17
-    DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
-    JMP_1 %bb.5
-  bb.4.bb4:
-    successors: %bb.5
-  bb.5.bb5:
-    successors: %bb.2, %bb.6
-    JCC_1 %bb.2, 4, implicit killed $eflags
-  bb.6:
-    successors: %bb.1, %bb.7
-    JCC_1 %bb.1, 4, implicit killed $eflags
-  bb.7:
-    RETQ $eax, debug-location !17
-...

diff  --git a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_insensitive_downgrade.mir b/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_insensitive_downgrade.mir
deleted file mode 100644
index 051c8dbc9c41..000000000000
--- a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_insensitive_downgrade.mir
+++ /dev/null
@@ -1,112 +0,0 @@
---- |
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s --implicit-check-not=DBG_VALUE
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - -experimental-debug-variable-locations | FileCheck %s --implicit-check-not=DBG_VALUE
-  ;
-  ; No DBG_VALUEs should be propagated, as there's a loop between bb2 and bb3
-  ; that defines $rdi without specifying it as being the variable value. Uses
-  ; implicit check-not in runlines above.
-  ;
-  ; CHECK-LABEL: bb.1.while.body
-  ; CHECK:       DBG_VALUE
-  ; CHECK-NEXT:  TEST8rr
-  ; CHECK-NEXT:  JCC_1
-
-  ; ModuleID = 'multi-downgrade-but-not-sensitive.ll'
-  source_filename = "/fast/fs/llvm3/clang/lib/CodeGen/CoverageMappingGen.cpp"
-  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-  target triple = "x86_64-unknown-linux-gnu"
-  
-  %"struct.std::pair.1976" = type { %"class.clang::SourceLocation", i32 }
-  %"class.clang::SourceLocation" = type { i32 }
-  
-  ; Function Attrs: nounwind uwtable
-  define weak_odr void @_ZSt17__merge_sort_loopIPSt4pairIN5clang14SourceLocationEjES4_lN9__gnu_cxx5__ops15_Iter_comp_iterIN4llvm11less_secondEEEEvT_SB_T0_T1_T2_(%"struct.std::pair.1976"* %__result) local_unnamed_addr !dbg !12 {
-  while.body.lr.ph:
-    br label %while.body, !dbg !17
-  
-  while.body:                                       ; preds = %while.body, %while.body.i, %while.body.lr.ph
-    %__result.addr.099 = phi %"struct.std::pair.1976"* [ %__result, %while.body.lr.ph ], [ %__result.addr.099, %while.body ], [ %incdec.ptr7.i, %while.body.i ]
-    call void @llvm.dbg.value(metadata %"struct.std::pair.1976"* %__result.addr.099, metadata !16, metadata !DIExpression()), !dbg !17
-    br i1 undef, label %while.body.i.preheader, label %while.body, !dbg !17
-  
-  while.body.i.preheader:                           ; preds = %while.body
-    br label %while.body.i, !dbg !17
-  
-  while.body.i:                                     ; preds = %while.body.i, %while.body.i.preheader
-    %__result.addr.046.i = phi %"struct.std::pair.1976"* [ %incdec.ptr7.i, %while.body.i ], [ %__result.addr.099, %while.body.i.preheader ]
-    %incdec.ptr7.i = getelementptr inbounds %"struct.std::pair.1976", %"struct.std::pair.1976"* %__result.addr.046.i, i64 1, !dbg !17
-    %cmp.not.i = icmp ne %"struct.std::pair.1976"* undef, undef, !dbg !17
-    %0 = and i1 undef, %cmp.not.i, !dbg !17
-    br i1 %0, label %while.body.i, label %while.body, !dbg !17
-  }
-  
-  ; Function Attrs: nounwind readnone speculatable willreturn
-  declare void @llvm.dbg.value(metadata, metadata, metadata)
-  
-  ; Function Attrs: nounwind
-  declare void @llvm.stackprotector(i8*, i8**)
-  
-  !llvm.dbg.cu = !{!0}
-  !llvm.module.flags = !{!7, !8, !9, !10}
-  !llvm.ident = !{!11}
-  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
-  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
-  !2 = !{}
-  !3 = !{!4}
-  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
-  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
-  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-  !7 = !{i32 2, !"Dwarf Version", i32 4}
-  !8 = !{i32 2, !"Debug Info Version", i32 3}
-  !9 = !{i32 1, !"wchar_size", i32 2}
-  !10 = !{i32 7, !"PIC Level", i32 2}
-  !11 = !{!"clang version 10.0.0"}
-  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
-  !13 = !DISubroutineType(types: !14)
-  !14 = !{!6, !6}
-  !15 = !{!16}
-  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
-  !17 = !DILocation(line: 10, scope: !12)
-
-
-...
----
-name:            _ZSt17__merge_sort_loopIPSt4pairIN5clang14SourceLocationEjES4_lN9__gnu_cxx5__ops15_Iter_comp_iterIN4llvm11less_secondEEEEvT_SB_T0_T1_T2_
-alignment:       16
-tracksRegLiveness: true
-registers:       []
-liveins:
-  - { reg: '$rdi', virtual-reg: '' }
-machineFunctionInfo: {}
-body:             |
-  bb.0.while.body.lr.ph:
-    successors: %bb.1(0x80000000)
-    liveins: $rdi
-  
-    renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
-  
-  bb.1.while.body (align 16):
-    successors: %bb.2(0x40000000), %bb.1(0x40000000)
-    liveins: $eax, $rdi
-  
-    DBG_VALUE $rdi, $noreg, !16, !DIExpression(), debug-location  !17
-    TEST8rr renamable $al, renamable $al, implicit-def $eflags, debug-location  !17
-    JCC_1 %bb.1, 5, implicit killed $eflags, debug-location  !17
-  
-  bb.2.while.body.i (align 16):
-    successors: %bb.3(0x7e000000), %bb.1(0x02000000)
-    liveins: $eax, $rdi
-  
-    renamable $rdi = nuw ADD64ri8 killed renamable $rdi, 8, implicit-def dead $eflags, debug-location  !17
-    TEST8rr renamable $al, renamable $al, implicit-def $eflags, debug-location  !17
-    JCC_1 %bb.1, 5, implicit $eflags, debug-location  !17
-  
-  bb.3.while.body.i:
-    successors: %bb.2(0x7df7df7e), %bb.1(0x02082082)
-    liveins: $eax, $rdi
-  
-    TEST8rr renamable $al, renamable $al, implicit-def $eflags, debug-location  !17
-    JCC_1 %bb.2, 5, implicit $eflags
-    JMP_1 %bb.1
-
-...

diff  --git a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_path_lengths.mir b/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_path_lengths.mir
deleted file mode 100644
index 6d3147405822..000000000000
--- a/llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_path_lengths.mir
+++ /dev/null
@@ -1,273 +0,0 @@
---- |
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - -experimental-debug-variable-locations | FileCheck %s
-  ;
-  ; This is a regression test extracted from llvm11ish LICM.cpp. Consider the
-  ; blocks from bb.6 to bb.9: there are two paths to bb.9, one an immediate
-  ; branch, the other takes a longer route. Because VarLocBased LiveDebugValues
-  ; always schedules blocks to be examined in the _next_ dataflow iteration,
-  ; any exploration starting at bb.6 follows this pattern:
-  ;   * Round 1: Examine block 6
-  ;   * Round 2: Examine block 7 and 9
-  ;   * Round 3: Examine block 8
-  ;   * Round 4: Examine block 9
-  ; This works for VarLocBased LDV as it has a simple lattice. However for
-  ; InstrRefBasedLDV, in the first examination of block 9 not all predecessors
-  ; will have yet accounted for any changes to block 6's live-outs. It takes
-  ; several iterations for those to reach block 8. This raises the possibility
-  ; of blocks seeing conflicting variable values on their live-in edges, which
-  ; wouldn't be present if their predecessors had been visited beforehand.
-  ;
-  ; It's also not really reverse-post-order visiting.
-
-  ; Test that a variable value appears in bb.9, which is renumbered 19 during
-  ; mir parsing.
-  ; CHECK-LABEL: bb.19:
-  ; CHECK:         DBG_VALUE
-  ; CHECK-NEXT:    JMP_1 %bb.19
-
-  ; ModuleID = 'rpot_bad.ll'
-  source_filename = "/fast/fs/llvm3/llvm/lib/Transforms/Scalar/LICM.cpp"
-  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-  target triple = "x86_64-unknown-linux-gnu"
-  
-  ; Function Attrs: nounwind uwtable
-  define zeroext i1 @mangled(i64 %LI, i64 %DT, i64 %MSSAU) local_unnamed_addr #0 !dbg !12 {
-  entry:
-    ret i1 0
-  }
-  
-  declare zeroext i1 @_ZNK4llvm10BasicBlock20canSplitPredecessorsEv() local_unnamed_addr #1
-  
-  declare i1 @_ZN4llvm22SplitBlockPredecessorsEPNS_10BasicBlockENS_8ArrayRefIS1_EEPKcPNS_13DominatorTreeEPNS_8LoopInfoEPNS_16MemorySSAUpdaterEb() local_unnamed_addr #1
-  
-  ; Function Attrs: nounwind uwtable
-  declare hidden void @_ZN4llvm9SetVectorIPNS_10BasicBlockENS_11SmallVectorIS2_Lj8EEENS_13SmallDenseSetIS2_Lj8ENS_12DenseMapInfoIS2_EEEEE6insertINS_12PredIteratorIS1_NS_5Value18user_iterator_implINS_4UserEEEEEEEvT_SH_() local_unnamed_addr #0 align 2
-  
-  ; Function Attrs: nounwind readnone speculatable willreturn
-  declare void @llvm.dbg.value(metadata, metadata, metadata) #2
-  
-  ; Function Attrs: nounwind
-  declare void @llvm.stackprotector(i8*, i8**) #3
-  
-  !llvm.dbg.cu = !{!0}
-  !llvm.module.flags = !{!7, !8, !9, !10}
-  !llvm.ident = !{!11}
-  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
-  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
-  !2 = !{}
-  !3 = !{!4}
-  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
-  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
-  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-  !7 = !{i32 2, !"Dwarf Version", i32 4}
-  !8 = !{i32 2, !"Debug Info Version", i32 3}
-  !9 = !{i32 1, !"wchar_size", i32 2}
-  !10 = !{i32 7, !"PIC Level", i32 2}
-  !11 = !{!"clang version 10.0.0"}
-  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
-  !13 = !DISubroutineType(types: !14)
-  !14 = !{!6, !6}
-  !15 = !{!16}
-  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
-  !17 = !DILocation(line: 10, scope: !12)
-
-
-...
----
-name:            mangled
-alignment:       16
-tracksRegLiveness: true
-liveins:
-  - { reg: '$rdi' }
-  - { reg: '$rsi' }
-  - { reg: '$rdx' }
-frameInfo:
-  stackSize:       56
-  offsetAdjustment: -56
-  maxAlignment:    8
-  adjustsStack:    true
-  hasCalls:        true
-  maxCallFrameSize: 16
-  cvBytesOfCalleeSavedRegisters: 48
-fixedStack:
-  - { id: 0, type: spill-slot, offset: -56, size: 8, alignment: 8, callee-saved-register: '$rbx' }
-  - { id: 1, type: spill-slot, offset: -48, size: 8, alignment: 16, callee-saved-register: '$r12' }
-  - { id: 2, type: spill-slot, offset: -40, size: 8, alignment: 8, callee-saved-register: '$r13' }
-  - { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 16, callee-saved-register: '$r14' }
-  - { id: 4, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$r15' }
-  - { id: 5, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$rbp' }
-stack:
-  - { id: 0, type: spill-slot, offset: -64, size: 8, alignment: 8 }
-machineFunctionInfo: {}
-body:             |
-  bb.0:
-    liveins: $rdi, $rdx, $rsi, $rbp, $r15, $r14, $r13, $r12, $rbx
-  
-    frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 16
-    frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 24
-    frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 32
-    frame-setup PUSH64r killed $r13, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 40
-    frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 48
-    frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 56
-    frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
-    CFI_INSTRUCTION def_cfa_offset 64
-    CFI_INSTRUCTION offset $rbx, -56
-    CFI_INSTRUCTION offset $r12, -48
-    CFI_INSTRUCTION offset $r13, -40
-    CFI_INSTRUCTION offset $r14, -32
-    CFI_INSTRUCTION offset $r15, -24
-    CFI_INSTRUCTION offset $rbp, -16
-    $r14 = MOV64rr $rdx
-    $r15 = MOV64rr $rsi
-    $r12 = MOV64rr $rdi
-    renamable $r13d = XOR32rr undef $r13d, undef $r13d, implicit-def dead $eflags, implicit-def $r13
-    renamable $bpl = MOV8ri 1
-  
-  bb.1:
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    renamable $rax = MOV64rm undef renamable $rax, 1, $noreg, 0, $noreg, debug-location !17 :: (load 8 from `i64* undef`)
-    renamable $rax = AND64ri8 killed renamable $rax, -8, implicit-def dead $eflags, debug-location !17
-    renamable $rcx = LEA64r renamable $rax, 1, $noreg, -24, $noreg, debug-location !17
-    TEST64rr renamable $rax, renamable $rax, implicit-def $eflags, debug-location !17
-    renamable $rcx = CMOV64rr killed renamable $rcx, killed renamable $rax, 4, implicit killed $eflags, debug-location !17
-    DBG_VALUE $rcx, $noreg, !16, !DIExpression(), debug-location !17
-    MOV64mr $rsp, 1, $noreg, 0, $noreg, killed renamable $rcx :: (store 8 into %stack.0)
-    DBG_VALUE $rsp, 0, !16, !DIExpression(), debug-location !17
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.1, 5, implicit killed $eflags, debug-location !17
-  
-  bb.2:
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.1, 5, implicit $eflags, debug-location !17
-  
-  bb.3:
-    successors: %bb.4, %bb.1
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.1, 5, implicit $eflags, debug-location !17
-  
-  bb.4:
-    successors: %bb.5(0x7c000000), %bb.6(0x04000000)
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.6, 5, implicit $eflags, debug-location !17
-  
-  bb.5:
-    successors: %bb.6(0x04000000), %bb.10(0x7c000000)
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit undef $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $al, debug-location !17
-    TEST8rr killed renamable $al, renamable $al, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.6, 5, implicit $eflags, debug-location !17
-  
-  bb.10:
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    renamable $rax = IMPLICIT_DEF
-    JMP_1 %bb.11
-  
-  bb.19:
-    liveins: $bpl, $r12, $r13, $r14, $r15
-  
-    renamable $rax = MOV64rm $rsp, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
-    renamable $rax = MOV64rm killed renamable $rax, 1, $noreg, 8, $noreg, debug-location !17 :: (load 8 from `i64 *undef`)
-  
-  bb.11:
-    successors: %bb.12, %bb.11
-    liveins: $bpl, $rax, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.11, 5, implicit killed $eflags, debug-location !17
-  
-  bb.12:
-    successors: %bb.13, %bb.11
-    liveins: $bpl, $rax, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.11, 5, implicit $eflags, debug-location !17
-  
-  bb.13:
-    liveins: $bpl, $rax, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $r13b, renamable $r13b, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.11, 5, implicit $eflags, debug-location !17
-  
-  bb.14:
-    successors: %bb.15(0x7c000000), %bb.1(0x04000000)
-    liveins: $bpl, $rax, $r12, $r13, $r14, $r15
-  
-    renamable $rbx = MOV64rm killed renamable $rax, 1, $noreg, 24, $noreg :: (load 8 from `i64 *undef`)
-    CALL64pcrel32 @_ZNK4llvm10BasicBlock20canSplitPredecessorsEv, csr_64, implicit $rsp, implicit $ssp, implicit undef $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $al, debug-location !17
-    TEST8rr killed renamable $al, renamable $al, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.1, 4, implicit $eflags, debug-location !17
-  
-  bb.15:
-    liveins: $bpl, $rbx, $r12, $r13, $r14, $r15
-  
-    renamable $rbx = MOV64rm killed renamable $rbx, 1, $noreg, 40, $noreg, debug-location !17 :: (load 8 from `i64 *undef`)
-    dead $edx = XOR32rr undef $edx, undef $edx, implicit-def dead $eflags, implicit-def $rdx, debug-location !17
-    CALL64pcrel32 @_ZN4llvm9SetVectorIPNS_10BasicBlockENS_11SmallVectorIS2_Lj8EEENS_13SmallDenseSetIS2_Lj8ENS_12DenseMapInfoIS2_EEEEE6insertINS_12PredIteratorIS1_NS_5Value18user_iterator_implINS_4UserEEEEEEEvT_SH_, csr_64, implicit $rsp, implicit $ssp, implicit undef $rdi, implicit undef $rsi, implicit $rdx, implicit-def $rsp, implicit-def $ssp, debug-location !17
-  
-  bb.16:
-    successors: %bb.19(0x061801fc), %bb.17(0x79e7fe04)
-    liveins: $bpl, $r12, $r13, $r14, $r15, $rbx
-  
-    CMP32mi8 undef renamable $rax, 1, $noreg, 0, $noreg, 0, implicit-def $eflags, debug-location !17 :: (load 4 from `i32* undef`, align 8)
-    JCC_1 %bb.19, 4, implicit $eflags, debug-location !17
-  
-  bb.17:
-    successors: %bb.16(0x30000000), %bb.18(0x50000000)
-    liveins: $bpl, $rbx, $r12, $r13, $r14, $r15
-  
-    TEST8rr renamable $bpl, renamable $bpl, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.16, 5, implicit $eflags, debug-location !17
-  
-  bb.18:
-    liveins: $bpl, $rbx, $r12, $r13, $r14, $r15
-  
-    $edx = MOV32ri 1, implicit-def $rdx, debug-location !17
-    ;$ecx = MOV32ri @.str.282, implicit-def $rcx, debug-location !17
-    $ecx = MOV32ri 1, debug-location !17
-    $rdi = MOV64rr $rbx, debug-location !17
-    $r8 = MOV64rr $r15, debug-location !17
-    $r9 = MOV64rr $r12, debug-location !17
-    PUSH64i8 1, implicit-def $rsp, implicit $rsp, debug-location !17 :: (store 4 into stack + 8)
-    CFI_INSTRUCTION adjust_cfa_offset 8, debug-location !17
-    PUSH64r renamable $r14, implicit-def $rsp, implicit $rsp, debug-location !17 :: (store 8 into stack)
-    CFI_INSTRUCTION adjust_cfa_offset 8, debug-location !17
-    CALL64pcrel32 @_ZN4llvm22SplitBlockPredecessorsEPNS_10BasicBlockENS_8ArrayRefIS1_EEPKcPNS_13DominatorTreeEPNS_8LoopInfoEPNS_16MemorySSAUpdaterEb, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit undef $rsi, implicit $rdx, implicit $rcx, implicit $r8, implicit $r9, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax, debug-location !17
-    $rsp = ADD64ri8 $rsp, 16, implicit-def dead $eflags, debug-location !17
-    CFI_INSTRUCTION adjust_cfa_offset -16, debug-location !17
-    JMP_1 %bb.16
-  
-  bb.6:
-    renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
-    TEST8rr renamable $al, renamable $al, implicit-def $eflags, implicit killed $eax, debug-location !17
-    JCC_1 %bb.9, 5, implicit $eflags, debug-location !17
-  
-  bb.7:
-    renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
-  
-  bb.8:
-    successors: %bb.9(0x04000000), %bb.8(0x7c000000)
-    liveins: $eax
-  
-    TEST8rr renamable $al, renamable $al, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.8, 5, implicit killed $eflags, debug-location !17
-  
-  bb.9:
-    JMP_1 %bb.9
-
-...

diff  --git a/llvm/test/DebugInfo/MIR/Mips/last-inst-bundled.mir b/llvm/test/DebugInfo/MIR/Mips/last-inst-bundled.mir
index ed7360a68da4..1187dd433140 100644
--- a/llvm/test/DebugInfo/MIR/Mips/last-inst-bundled.mir
+++ b/llvm/test/DebugInfo/MIR/Mips/last-inst-bundled.mir
@@ -21,7 +21,7 @@
 #
 # Check that last bundled instruction of block gets recognized as end of basic block.
 # CHECK: bb.2.if.end
-# CHECK-NEXT: DBG_VALUE $s0, $noreg, !12, !DIExpression()
+# CHECK-NEXT: DBG_VALUE $s0, $noreg, !12, !DIExpression(), debug-location !17
 
 --- |
   ; ModuleID = '<stdin>'

diff  --git a/llvm/test/DebugInfo/MIR/X86/kill-after-spill.mir b/llvm/test/DebugInfo/MIR/X86/kill-after-spill.mir
index fb5503d7e086..d85be7f6d804 100644
--- a/llvm/test/DebugInfo/MIR/X86/kill-after-spill.mir
+++ b/llvm/test/DebugInfo/MIR/X86/kill-after-spill.mir
@@ -14,8 +14,8 @@
 # ...
 #
 # CHECK: bb.1.if.end:
-# CHECK: DBG_VALUE $rbp, 0, !37, !DIExpression(DW_OP_constu, 44, DW_OP_minus)
-# CHECK-NOT: DBG_VALUE $rbp, 0, !36, !DIExpression(DW_OP_constu, 48, DW_OP_minus)
+# CHECK: DBG_VALUE $rbp, 0, !37, !DIExpression(DW_OP_constu, 44, DW_OP_minus), debug-location !58
+# CHECK-NOT: DBG_VALUE $rbp, 0, !36, !DIExpression(DW_OP_constu, 48, DW_OP_minus), debug-location !57
 
 --- |
   ; ModuleID = '<stdin>'
@@ -283,7 +283,7 @@ body:             |
     $r13 = MOV64rr $rax
     renamable $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def dead $eflags
     renamable $r13 = AND64rr killed renamable $r13, renamable $r14, implicit-def $eflags
-    JCC_1 %bb.9, 4, implicit $eflags, debug-location !57
+    JCC_1 %bb.9, 4, implicit $eflags
 
   bb.1.if.end:
     successors: %bb.2(0x30000000), %bb.3(0x50000000)
@@ -301,7 +301,7 @@ body:             |
     $r12 = MOV64rr $rax
     $r15 = MOV64rr $r12
     renamable $r15 = AND64ri8 killed renamable $r15, -123, implicit-def $eflags
-    JCC_1 %bb.2, 4, implicit $eflags, debug-location !57
+    JCC_1 %bb.2, 4, implicit $eflags
 
   bb.3.private.exit:
     successors: %bb.9(0x30000000), %bb.4(0x50000000)
@@ -316,7 +316,7 @@ body:             |
     CALL64pcrel32 @func4, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax
     renamable $ecx = MOV32ri 1
     TEST32rr killed renamable $eax, renamable $eax, implicit-def $eflags
-    JCC_1 %bb.9, 4, implicit $eflags, debug-location !57
+    JCC_1 %bb.9, 4, implicit $eflags
 
   bb.4.if.then8:
     successors: %bb.8(0x30000000), %bb.5(0x50000000)
@@ -327,21 +327,21 @@ body:             |
     CALL64pcrel32 @func5, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $esi, implicit-def $rsp, implicit-def $ssp
     renamable $rax = MOV64rm killed renamable $r13, 1, $noreg, 8, $noreg :: (load 8 from %ir.13)
     TEST64rr renamable $rax, renamable $rax, implicit-def $eflags
-    JCC_1 %bb.8, 4, implicit $eflags, debug-location !57
+    JCC_1 %bb.8, 4, implicit $eflags
 
   bb.5.land.lhs.true:
     successors: %bb.6(0x30000000), %bb.7(0x50000000)
     liveins: $rax, $r12, $r15
 
     CMP32mi8 renamable $r15, 1, $noreg, 0, $noreg, 0, implicit-def $eflags :: (load 4 from %ir.tot_perf2, align 8)
-    JCC_1 %bb.7, 5, implicit $eflags, debug-location !57
+    JCC_1 %bb.7, 5, implicit $eflags
 
   bb.6.lor.lhs.false:
     successors: %bb.8(0x30000000), %bb.7(0x50000000)
     liveins: $rax, $r12, $r15
 
     CMP32mi8 killed renamable $r15, 1, $noreg, 4, $noreg, 0, implicit-def $eflags :: (load 4 from %ir.tot_bw)
-    JCC_1 %bb.8, 4, implicit $eflags, debug-location !57
+    JCC_1 %bb.8, 4, implicit $eflags
 
   bb.7.if.then14:
     successors: %bb.8(0x80000000)
@@ -350,13 +350,13 @@ body:             |
     renamable $rdx = MOV64rm killed renamable $rax, 1, $noreg, 8, $noreg :: (load 8 from %ir.20)
     $rdi = MOV64rr killed $r12
     $esi = MOV32rm $rbp, 1, $noreg, -44, $noreg :: (load 4 from %stack.1)
-    CALL64pcrel32 @func6, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $esi, implicit $rdx, implicit-def $rsp, implicit-def $ssp, debug-location !57
+    CALL64pcrel32 @func6, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $esi, implicit $rdx, implicit-def $rsp, implicit-def $ssp
 
   bb.8.cleanup:
     successors: %bb.9(0x80000000)
 
     renamable $ecx = MOV32ri 1
-    JMP_1 %bb.9, debug-location !57
+    JMP_1 %bb.9
 
   bb.2.if.then3:
     successors: %bb.9(0x80000000)
@@ -369,7 +369,7 @@ body:             |
     $edx = MOV32ri 5
     $r8d = MOV32rm $rbp, 1, $noreg, -48, $noreg :: (load 4 from %stack.0)
     CALL64pcrel32 @func3, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit $rcx, implicit $r8d, implicit-def $rsp, implicit-def $ssp
-    renamable $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def dead $eflags, debug-location !57
+    renamable $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def dead $eflags
 
   bb.9.cleanup:
     liveins: $ecx
@@ -382,6 +382,6 @@ body:             |
     $r14 = POP64r implicit-def $rsp, implicit $rsp
     $r15 = POP64r implicit-def $rsp, implicit $rsp
     $rbp = POP64r implicit-def $rsp, implicit $rsp
-    RETQ $eax, debug-location !57
+    RETQ $eax
 
 ...

diff  --git a/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir b/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
index bef0f4e4aa5a..c55269951aa5 100644
--- a/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
+++ b/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
@@ -31,9 +31,9 @@
 # DBG_VALUE for variables "x", "y" and "z" are extended into %bb.9 from its
 # predecessors %bb.0, %bb.2 and %bb.8.
 # CHECK:      bb.9.for.end:
-# CHECK-DAG:  DBG_VALUE $edi, $noreg, ![[X_VAR]], !DIExpression()
-# CHECK-DAG:  DBG_VALUE $esi, $noreg, ![[Y_VAR]], !DIExpression()
-# CHECK-DAG:  DBG_VALUE $edx, $noreg, ![[Z_VAR]], !DIExpression()
+# CHECK-DAG:  DBG_VALUE $edi, $noreg, ![[X_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK-DAG:  DBG_VALUE $esi, $noreg, ![[Y_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK-DAG:  DBG_VALUE $edx, $noreg, ![[Z_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
 # CHECK:      RET
 
 --- |

diff  --git a/llvm/test/DebugInfo/MIR/X86/live-debug-values-bad-transfer.mir b/llvm/test/DebugInfo/MIR/X86/live-debug-values-bad-transfer.mir
index 97fad0755b80..1d978b9c4553 100644
--- a/llvm/test/DebugInfo/MIR/X86/live-debug-values-bad-transfer.mir
+++ b/llvm/test/DebugInfo/MIR/X86/live-debug-values-bad-transfer.mir
@@ -1,5 +1,4 @@
 # RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -run-pass=livedebugvalues | FileCheck %s --implicit-check-not=DBG_VALUE
-# RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -run-pass=livedebugvalues -experimental-debug-variable-locations | FileCheck %s -check-prefix=NEWLDV --implicit-check-not=DBG_VALUE
 #
 # Test that the DBG_VALUE of ecx below does not get propagated. It is considered
 # live-in on LiveDebugValues' first pass through the loop, but on the second it
@@ -18,13 +17,6 @@
 # CHECK-LABEL: bb.1.loop:
 # CHECK:       $ebx = COPY killed $ecx
 # CHECK-NEXT:  DBG_VALUE
-#
-# This doesn't occur under value-tracking LiveDebugValues though.
-#
-# NEWLDV-LABEL: name: foo
-# NEWLDV-LABEL: bb.0.entry:
-# NEWLDV:       $ecx = MOV32ri 0
-# NEWLDV-NEXT:  DBG_VALUE
 
 --- |
   source_filename = "live-debug-values-remove-range.ll"
@@ -82,30 +74,30 @@ body:             |
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbx, -16
     $ebx = MOV32rr $edi
-    $eax = MOV32ri 0, debug-location !10
-    $ecx = MOV32ri 0, debug-location !10
+    $eax = MOV32ri 0
+    $ecx = MOV32ri 0
     DBG_VALUE $ecx, $noreg, !9, !DIExpression(), debug-location !10
-    $edi = MOV32ri 0, debug-location !10
-    $esi = MOV32ri 0, debug-location !10
+    $edi = MOV32ri 0
+    $esi = MOV32ri 0
   
   bb.1.loop:
     successors: %bb.1, %bb.2
     liveins: $ebx, $eax, $ecx, $edi, $esi
   
-    $eax = COPY $ecx, debug-location !10
-    $ebx = COPY killed $ecx, debug-location !10
-    $ecx = COPY killed $edi, debug-location !10
-    $edi = COPY killed $esi, debug-location !10
-    $esi = MOV32ri 1, debug-location !10
+    $eax = COPY $ecx
+    $ebx = COPY killed $ecx
+    $ecx = COPY killed $edi
+    $edi = COPY killed $esi
+    $esi = MOV32ri 1
     TEST8ri killed renamable $al, 1, implicit-def $eflags
-    JCC_1 %bb.1, 5, implicit killed $eflags, debug-location !10
+    JCC_1 %bb.1, 5, implicit killed $eflags
   
   bb.2.exit:
     liveins: $ebx
   
-    $eax = MOV32rr killed $ebx, debug-location !10
+    $eax = MOV32rr killed $ebx
     $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 8
-    RETQ $eax, debug-location !10
+    RETQ $eax
 
 ...

diff  --git a/llvm/test/DebugInfo/MIR/X86/live-debug-values.mir b/llvm/test/DebugInfo/MIR/X86/live-debug-values.mir
index 2731eac26ecd..2cf52611bafd 100644
--- a/llvm/test/DebugInfo/MIR/X86/live-debug-values.mir
+++ b/llvm/test/DebugInfo/MIR/X86/live-debug-values.mir
@@ -35,7 +35,7 @@
 # CHECK: ![[N_VAR:[0-9]+]] = !DILocalVariable(name: "n",{{.*}})
 #
 # CHECK:      bb.5.if.end.7:
-# CHECK:        DBG_VALUE $ebx, $noreg, ![[N_VAR]], !DIExpression()
+# CHECK:        DBG_VALUE $ebx, $noreg, ![[N_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
 
 
 --- |

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues-ignores-metaInstructions.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues-ignores-metaInstructions.mir
index 89c7d55d95c6..e8c3a994e59d 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues-ignores-metaInstructions.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues-ignores-metaInstructions.mir
@@ -6,11 +6,11 @@
   ; CHECK-LABEL: bb.0.entry:
   ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
index 89b4ac63e08a..4004199ad048 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
@@ -5,13 +5,13 @@
   ; a diamond that doesn't move or clobber their locations.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir
index bd6dacc2fed1..063b7f450e08 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir
@@ -5,12 +5,12 @@
   ; a diamond when the location is clobbered and not into the successor block.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $ebx = MOV32ri 0, debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $ebx = MOV32ri 0, debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir
index 05a1955532aa..8e530c89db62 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir
@@ -5,17 +5,17 @@
   ; diamond CFG when the location is moved by another instruction.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $eax = MOV32ri 0, debug-location !17
-  ; CHECK-NEXT:  DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK-NEXT:  DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $eax = MOV32ri 0, debug-location !17
-  ; CHECK-NEXT:  DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK-NEXT:  DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir
index ee843492c7b9..a89546800a21 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir
@@ -5,11 +5,11 @@
   ; of a diamond CFG that clobbers its location.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir
index fe3924bf846a..4b9b70455407 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir
@@ -5,13 +5,13 @@
   ; of a diamond CFG that moves its location.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $eax = MOV32ri 0, debug-location !17
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
index d7eb4bd48ab3..ba2d31ea0b46 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
@@ -5,13 +5,13 @@
   ; loop that doesn't move or clobber its location.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
index f48940a24861..2801df4832e3 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
@@ -5,13 +5,13 @@
   ; sequential CFG.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir
index f969179b76a7..d1cacff032e1 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir
@@ -5,9 +5,9 @@
   ; control flow when it's location is clobbered.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir
index 339d21380fa6..c1cb8d5daa95 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir
@@ -5,13 +5,13 @@
   ; no control flow when a location is moved and then clobbered.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-NEXT:  $eax = MOV32ri 0, debug-location !17
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_load_in_loop.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_load_in_loop.mir
deleted file mode 100644
index 97af3bf50219..000000000000
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_load_in_loop.mir
+++ /dev/null
@@ -1,113 +0,0 @@
---- |
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - -experimental-debug-variable-locations -emulate-old-livedebugvalues=0 | FileCheck %s -implicit-check-not=DBG_VALUE
-
-  ; Sometimes, variables can have multiple locations, and when control flow
-  ; merges LiveDebugValues has a hard time picking which one the variable lives
-  ; in. Test two of these scenarios that old LiveDebugValues can't handle: when
-  ; a value is in two registers, and when a value is both in a register and
-  ; on the stack.
-
-  ; In a register:
-
-  ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $rdi, $noreg, !16, !DIExpression()
-  ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-  ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-  ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-
-  ; On the stack: we move from $rbp to a stack slot in bb4, but join back on
-  ; $rbp in bb6.
-
-  ; CHECK-LABEL: bb.4:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-  ; CHECK:       DBG_VALUE $rsp, 0, !16, !DIExpression()
-  ; CHECK-LABEL: bb.5:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-  ; CHECK-LABEL: bb.6:
-  ; CHECK:       DBG_VALUE $rbp, $noreg, !16, !DIExpression()
-
-  declare i64 @bees(i64 %arg);
-
-  define i32 @_Z8bb_to_bb(i64 %arg) local_unnamed_addr !dbg !12 {
-  entry:
-    br label %bb1, !dbg !17
-  bb1:
-    br label %bb2, !dbg !17
-  bb2:
-    br label %bb3, !dbg !17
-  bb3:
-    ret i32 0, !dbg !17
-  }
-
-  !llvm.dbg.cu = !{!0}
-  !llvm.module.flags = !{!7, !8, !9, !10}
-  !llvm.ident = !{!11}
-  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
-  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
-  !2 = !{}
-  !3 = !{!4}
-  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
-  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
-  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-  !7 = !{i32 2, !"Dwarf Version", i32 4}
-  !8 = !{i32 2, !"Debug Info Version", i32 3}
-  !9 = !{i32 1, !"wchar_size", i32 2}
-  !10 = !{i32 7, !"PIC Level", i32 2}
-  !11 = !{!"clang version 10.0.0"}
-  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
-  !13 = !DISubroutineType(types: !14)
-  !14 = !{!6, !6}
-  !15 = !{!16}
-  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
-  !17 = !DILocation(line: 10, scope: !12)
-
-...
----
-name: _Z8bb_to_bb
-tracksRegLiveness: true
-liveins:
-  - { reg: '$rdi', virtual-reg: '' }
-stack:
-  - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
-      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
-      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
-body:  |
-  bb.0.entry:
-  liveins: $rdi
-    successors: %bb.1, %bb.2
-    DBG_VALUE $rdi, $noreg, !16, !DIExpression(), debug-location !17
-    $rbp = MOV64rr $rdi, debug-location !17
-    dead $rcx = MOV64ri 0, debug-location !17
-    CALL64pcrel32 @bees, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax, debug-location !17
-    CMP64ri8 renamable $rax, 1, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !17
-  bb.1.bb1:
-  liveins: $rax, $rbp
-    successors: %bb.3
-    $rbp = MOV64ri 0, debug-location !17
-    DBG_VALUE $rbp, $noreg, !16, !DIExpression(), debug-location !17
-    JMP_1 %bb.3
-  bb.2.bb2:
-  liveins: $rax, $rbp
-    successors: %bb.3
-    $rax = MOV64ri 0, debug-location !17
-  bb.3.bb3:
-  liveins: $rax, $rbp
-    $rdi = MOV64rr $rbp, debug-location !17
-    CALL64pcrel32 @bees, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax, debug-location !17
-    CMP64ri8 renamable $rax, 1, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.5, 4, implicit killed $eflags, debug-location !17
-  bb.4:
-  liveins: $rax, $rbp
-    MOV64mr $rsp, 1, $noreg, 8, $noreg, killed renamable $rbp :: (store 8 into %stack.0)
-    JMP_1 %bb.6
-  bb.5:
-  liveins: $rax, $rbp
-  bb.6:
-  liveins: $rax, $rbp
-    RETQ $rax, debug-location !17
-...

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir
index 0d9cc1905134..7860517adaf0 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir
@@ -5,15 +5,15 @@
   ; break.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
index 1e410054dc1c..9854e05e20dc 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
@@ -5,17 +5,17 @@
   ; diamond pattern and beyond.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.5.bb5:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
index 7861e7dfa9c6..ed7bdcffd881 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
@@ -5,17 +5,17 @@
   ; diamond pattern but not beyond.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.5.bb5:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
index 83f723555894..0989ee335b08 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
@@ -5,15 +5,15 @@
   ; backedges and beyond.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
index 7ff781a07fce..f15275ed60a9 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
@@ -4,17 +4,17 @@
   ; Check that DBG_VALUE instructions are propagated into loops within loops.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.1.bb1:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.2.bb2:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.5.bb5:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
index fca7f83a14be..da624928c3aa 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
@@ -5,9 +5,9 @@
   ; loops that move their locations.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.3.bb3:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir
index baade395c6ed..12f22df63b14 100644
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir
@@ -5,11 +5,11 @@
   ; loops that move their locations.
 
   ; CHECK-LABEL: bb.0.entry:
-  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.4.bb4:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
   ; CHECK-LABEL: bb.5.bb5:
-  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression()
+  ; CHECK:       DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
 
   define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
   entry:

diff  --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_many_loop_heads.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_many_loop_heads.mir
deleted file mode 100644
index f5332c29c837..000000000000
--- a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_many_loop_heads.mir
+++ /dev/null
@@ -1,196 +0,0 @@
---- |
-  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - -experimental-debug-variable-locations | FileCheck %s -implicit-check-not=DBG_VALUE
-
-  ; The MIR below represents a pathalogical case for value-tracking
-  ; LiveDebugValues. The code structure is eight nested loops, with loop heads
-  ; from bb.1 to bb.8, a central block bb.9 that does nothing, and loop ends
-  ; from bb.10 to bb.17. The CMP's and jumps might be broken; the only
-  ; important part is that it looks like nested loops to LiveDebugValues.
-  ;
-  ; The variable location is always $rsi, which enters the function live.
-  ; There's also a def of $rsi in bb.14, in a loop tail, half way into the
-  ; loop nest.s.
-  ;
-  ; This presents a serious problem: the outer four loops each implicitly have
-  ; a PHI value for $rsi, because the block could be entered on a path straight
-  ; from entry, or from bb.14 where $rsi is def'd. While the innermost four
-  ; loops have a value of $rsi that is live-through each loop from bb.5
-  ; onwards.
-  ;
-  ; Value-tracking LiveDebugValues _must_ correctly identify each PHI value.
-  ; Observe the DBG_VALUE in bb.2: this variable location musn't be propagated
-  ; any further, because there's a path to either successor that goes through
-  ; bb.14 where the value is overwritten.Value tracking needs to identify the
-  ; PHI value on entry to the block; and that each successor has a 
diff erent
-  ; PHI value in that register.
-  ;
-  ; Likewise, we mustn't identify values as PHIs which aren't. Entering bb.5
-  ; has a PHI value (from bb.4) in $rsi. There are no paths to bb.5 that pass
-  ; through the clobbering bb.14, which don't also pass through bb.4: thus
-  ; that value is live-through the innermost four loops. If we
-  ; over-approximated where PHIs happened, we would lose variable location
-  ; coverage here, by not propagating the variable location through the inner
-  ; loops.
-  ;
-  ; Getting this right requires the lattice descent (described in the
-  ; implementation) to search loop head PHI values, until one is found that is
-  ; live-through a loop.
-
-  ; This location in bb.2 should not be propagated further,
-  ; CHECK-LABEL: bb.2:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-
-  ; This location should be live through the inner loops, til bb.14
-  ; CHECK-LABEL: bb.5:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.6:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.7:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.8:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.9:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.10:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.11:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.12:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-  ; CHECK-LABEL: bb.13:
-  ; CHECK:  DBG_VALUE $rsi, $noreg
-
-  declare i64 @bees(i64 %arg);
-
-  define i32 @chiasm(i64 %arg) local_unnamed_addr !dbg !12 {
-  entry:
-    br label %bb1, !dbg !17
-  bb1:
-    br label %bb2, !dbg !17
-  bb2:
-    br label %bb3, !dbg !17
-  bb3:
-    ret i32 0, !dbg !17
-  }
-
-  !llvm.dbg.cu = !{!0}
-  !llvm.module.flags = !{!7, !8, !9, !10}
-  !llvm.ident = !{!11}
-  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
-  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
-  !2 = !{}
-  !3 = !{!4}
-  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
-  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
-  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-  !7 = !{i32 2, !"Dwarf Version", i32 4}
-  !8 = !{i32 2, !"Debug Info Version", i32 3}
-  !9 = !{i32 1, !"wchar_size", i32 2}
-  !10 = !{i32 7, !"PIC Level", i32 2}
-  !11 = !{!"clang version 10.0.0"}
-  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
-  !13 = !DISubroutineType(types: !14)
-  !14 = !{!6, !6}
-  !15 = !{!16}
-  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
-  !17 = !DILocation(line: 10, scope: !12)
-
-...
----
-name: chiasm
-tracksRegLiveness: true
-liveins:
-  - { reg: '$rdi', virtual-reg: '' }
-stack:
-  - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
-      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
-      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
-body:  |
-  bb.0.entry:
-  liveins: $rdi, $rsi
-
-  bb.1:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 1, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.17, 4, implicit $eflags, debug-location !17
-
-  bb.2:
-  liveins: $rsi, $rdi
-    DBG_VALUE $rsi, $noreg, !16, !DIExpression(), debug-location !17
-    CMP64ri8 renamable $rdi, 2, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.16, 4, implicit $eflags, debug-location !17
-
-  bb.3:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 3, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.15, 4, implicit $eflags, debug-location !17
-
-  bb.4:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 4, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.14, 4, implicit $eflags, debug-location !17
-
-  bb.5:
-  liveins: $rsi, $rdi
-    DBG_VALUE $rsi, $noreg, !16, !DIExpression(), debug-location !17
-    CMP64ri8 renamable $rdi, 4, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.13, 4, implicit $eflags, debug-location !17
-
-  bb.6:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 4, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.12, 4, implicit $eflags, debug-location !17
-
-  bb.7:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 4, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.11, 4, implicit $eflags, debug-location !17
-
-  bb.8:
-  liveins: $rsi, $rdi
-    CMP64ri8 renamable $rdi, 4, implicit-def $eflags, debug-location !17
-    JCC_1 %bb.10, 4, implicit $eflags, debug-location !17
-
-  bb.9:
-  liveins: $rsi, $rdi, $eflags
-    ;$rsi = MOV64ri 0, debug-location !17
-    ;JMP_1 %bb.1, debug-location !17
-
-  bb.10:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.8, 4, implicit $eflags, debug-location !17
-    
-  bb.11:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.7, 4, implicit $eflags, debug-location !17
- 
-  bb.12:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.6, 4, implicit $eflags, debug-location !17
- 
-  bb.13:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.5, 4, implicit $eflags, debug-location !17
- 
-  bb.14:
-  liveins: $rsi, $rdi, $eflags
-    $rsi = MOV64ri 0, debug-location !17
-    JCC_1 %bb.4, 4, implicit $eflags, debug-location !17
-
-  bb.15:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.3, 4, implicit $eflags, debug-location !17
-
-  bb.16:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.2, 4, implicit $eflags, debug-location !17
-
-  bb.17:
-  liveins: $rsi, $rdi, $eflags
-    JCC_1 %bb.1, 4, implicit $eflags, debug-location !17
- 
-  bb.18:
-  liveins: $rsi, $rdi, $eflags
-    RETQ
-
-...


        


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