[llvm] e7b2d9f - [DBG][LIVEDEBUGVALUES][NFC] Add Targeted LiveDebugValues Behaviour Tests.
Tom Weaver via llvm-commits
llvm-commits at lists.llvm.org
Tue Jan 14 07:51:28 PST 2020
Author: Tom Weaver
Date: 2020-01-14T15:51:11Z
New Revision: e7b2d9f4702cb8882aa275bcb8eab37be17601e1
URL: https://github.com/llvm/llvm-project/commit/e7b2d9f4702cb8882aa275bcb8eab37be17601e1
DIFF: https://github.com/llvm/llvm-project/commit/e7b2d9f4702cb8882aa275bcb8eab37be17601e1.diff
LOG: [DBG][LIVEDEBUGVALUES][NFC] Add Targeted LiveDebugValues Behaviour Tests.
Adds 22 distinct tests that exercise the live-debug-values passes
expected behaviour.
reviewers: aprantl, vsk
Differential revision: https://reviews.llvm.org/D72515
Added:
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_break_clobbered.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_clobbered.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_clobber.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_early_clobber.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge_clobbered.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_clobbered.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir
Modified:
Removed:
################################################################################
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
new file mode 100644
index 000000000000..4004199ad048
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond.mir
@@ -0,0 +1,67 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propogated through a CFG containing
+ ; a diamond that doesn't move or clobber their locations.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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, %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.1.bb1:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JMP_1 %bb.3
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..063b7f450e08
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_clobber.mir
@@ -0,0 +1,67 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are only propogated into the top blocks of
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.1.bb1:
+ ; 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(), debug-location !17
+ ; CHECK-NEXT: $ebx = MOV32ri 0, debug-location !17
+
+ 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:
+ 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, %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.1.bb1:
+ successors: %bb.3
+ $ebx = MOV32ri 0, debug-location !17
+ JMP_1 %bb.3
+ bb.2.bb2:
+ successors: %bb.3
+ $ebx = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..8e530c89db62
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_match_move.mir
@@ -0,0 +1,73 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propogated correctly through a
+ ; diamond CFG when the location is moved by another instruction.
+
+ ; 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(), debug-location !17
+ ; CHECK-NEXT: $eax = MOV32ri 0, debug-location !17
+ ; CHECK-NEXT: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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, %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.1.bb1:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ JMP_1 %bb.3
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..a89546800a21
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_clobber.mir
@@ -0,0 +1,65 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into a successor block
+ ; of a diamond CFG that clobbers its location.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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, %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.1.bb1:
+ successors: %bb.3
+ $ebx = MOV32ri 0, debug-location !17
+ JMP_1 %bb.3
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..4b9b70455407
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_diamond_one_move.mir
@@ -0,0 +1,68 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into a successor block
+ ; of a diamond CFG that moves its location.
+
+ ; 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(), debug-location !17
+ ; CHECK-NEXT: $eax = MOV32ri 0, debug-location !17
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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, %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.1.bb1:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ JMP_1 %bb.3
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
new file mode 100644
index 000000000000..ba2d31ea0b46
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_basic_loop.mir
@@ -0,0 +1,66 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated throughout a CFG with a
+ ; loop that doesn't move or clobber its location.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.1, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
new file mode 100644
index 000000000000..2801df4832e3
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb.mir
@@ -0,0 +1,65 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated throughout a basic
+ ; sequential CFG.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..d1cacff032e1
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_clobbered.mir
@@ -0,0 +1,61 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated into basic blocks with no
+ ; control flow when it's location is clobbered.
+
+ ; 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(), debug-location !17
+
+ 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:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..c1cb8d5daa95
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_bb_to_bb_move_to_clobber.mir
@@ -0,0 +1,68 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are correctly propagated into blocks with
+ ; no control flow when a location is moved and then clobbered.
+
+ ; 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(), debug-location !17
+ ; CHECK-NEXT: $eax = MOV32ri 0, debug-location !17
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; 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 {
+ 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
+body: |
+ bb.0.entry:
+ successors: %bb.1
+ $ebx = MOV32ri 0, debug-location !17
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ $ebx = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ RETQ $eax, 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
new file mode 100644
index 000000000000..7860517adaf0
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break.mir
@@ -0,0 +1,74 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are correctly propagated into a loop with
+ ; break.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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 %bb4, !dbg !17
+ bb4:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.3, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.3.bb3:
+ successors: %bb.1, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.4.bb4:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break_clobbered.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break_clobbered.mir
new file mode 100644
index 000000000000..b4dea6ccbf70
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_break_clobbered.mir
@@ -0,0 +1,66 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are correctly propagated when dealing
+ ; with a loop that clobbers its location and has two exit points (a break).
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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 %bb4, !dbg !17
+ bb4:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.3, %bb.4
+ $ebx = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.3.bb3:
+ successors: %bb.1, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.4.bb4:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_clobbered.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_clobbered.mir
new file mode 100644
index 000000000000..47f114f7fe1b
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_clobbered.mir
@@ -0,0 +1,63 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into a loop that
+ ; clobbers it's location.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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:\test")
+ !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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+
+ bb.2.bb2:
+ successors: %bb.1, %bb.3
+ $ebx = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
new file mode 100644
index 000000000000..9854e05e20dc
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond.mir
@@ -0,0 +1,82 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated into a loop with
+ ; diamond pattern and beyond.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.5.bb5:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.3, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JMP_1 %bb.4
+ bb.3.bb3:
+ successors: %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_clobber.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_clobber.mir
new file mode 100644
index 000000000000..7e18939870bc
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_clobber.mir
@@ -0,0 +1,73 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into a loop with
+ ; diamond pattern that clobbers it's location.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.1.bb1:
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.3, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JMP_1 %bb.4
+ bb.3.bb3:
+ successors: %bb.4
+ $ebx = MOV32ri 0, debug-location !17
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
new file mode 100644
index 000000000000..ed7bdcffd881
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_diamond_move.mir
@@ -0,0 +1,83 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated into a loop with
+ ; diamond pattern but not beyond.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.1.bb1:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.5.bb5:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.3, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.4
+ $ebx = MOV32ri 0, debug-location !17
+ JMP_1 %bb.4
+ bb.3.bb3:
+ successors: %bb.4
+ $ebx = MOV32ri 0, debug-location !17
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $ebx = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_early_clobber.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_early_clobber.mir
new file mode 100644
index 000000000000..ff66eba762cb
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_early_clobber.mir
@@ -0,0 +1,60 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into a loop that
+ ; clobbers it's location.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $ebx = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.1, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.3.bb3:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
new file mode 100644
index 000000000000..0989ee335b08
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge.mir
@@ -0,0 +1,74 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are prapogated into a loop that has two
+ ; backedges and beyond.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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 %bb4, !dbg !17
+ bb4:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.1, %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.3.bb3:
+ successors: %bb.1, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.4.bb4:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge_clobbered.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge_clobbered.mir
new file mode 100644
index 000000000000..0148af915559
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_two_backedge_clobbered.mir
@@ -0,0 +1,66 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into loops that clobber
+ ; their locations and have two backedges.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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 %bb4, !dbg !17
+ bb4:
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2
+ $eax = MOV32ri 0, debug-location !17
+ bb.2.bb2:
+ successors: %bb.1, %bb.3
+ $ebx = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.3.bb3:
+ successors: %bb.1, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.4.bb4:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
new file mode 100644
index 000000000000..f15275ed60a9
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop.mir
@@ -0,0 +1,81 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are propagated into loops within loops.
+
+ ; 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(), debug-location !17
+ ; CHECK-LABEL: bb.2.bb2:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.5.bb5:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
diff --git a/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_clobbered.mir b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_clobbered.mir
new file mode 100644
index 000000000000..78330d52c7cf
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_clobbered.mir
@@ -0,0 +1,72 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into loops with inner
+ ; loops that clobber their locations.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ successors: %bb.2, %bb.4
+ $ebx = MOV32ri 0, debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..da624928c3aa
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_moved.mir
@@ -0,0 +1,75 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propagated into loops with inner
+ ; loops that move their locations.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.3.bb3:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
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
new file mode 100644
index 000000000000..12f22df63b14
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/livedebugvalues_loop_within_loop_outer_moved.mir
@@ -0,0 +1,77 @@
+--- |
+ ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
+
+ ; Check that DBG_VALUE instructions are not propogated into loops with inner
+ ; loops that move their locations.
+
+ ; CHECK-LABEL: bb.0.entry:
+ ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.4.bb4:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ ; CHECK-LABEL: bb.5.bb5:
+ ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+
+ 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
+ DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
+ bb.1.bb1:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.4, 4, implicit killed $eflags
+ bb.2.bb2:
+ successors: %bb.3
+ $eax = MOV32ri 0, debug-location !17
+ bb.3.bb3:
+ successors: %bb.2, %bb.4
+ $eax = MOV32ri 0, debug-location !17
+ JCC_1 %bb.2, 4, implicit killed $eflags
+ bb.4.bb4:
+ successors: %bb.1, %bb.5
+ $eax = MOV32ri 0, debug-location !17
+ DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !17
+ JCC_1 %bb.1, 4, implicit killed $eflags
+ bb.5.bb5:
+ RETQ $eax, debug-location !17
+...
More information about the llvm-commits
mailing list