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May 29, 2024
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[MTE] add tests for stack tagging debug info #93743

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60 changes: 60 additions & 0 deletions llvm/test/CodeGen/AArch64/stack-tagging-dbg-assign-tag-offset.ll
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; RUN: opt -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s
; RUN: opt --try-experimental-debuginfo-iterators -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s

source_filename = "test.ll"
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-android10000"

declare void @g(ptr, ptr, ptr, ptr, ptr, ptr)

; Function Attrs: sanitize_memtag
define void @f() #0 !dbg !7 {
entry:
%nodebug0 = alloca ptr, align 8
%nodebug1 = alloca ptr, align 8
%nodebug2 = alloca ptr, align 8
%nodebug3 = alloca ptr, align 8
; CHECK: %a = alloca{{.*}} !DIAssignID ![[ID1:[0-9]+]]
%a = alloca ptr, align 8, !DIAssignID !13
; CHECK: @llvm.dbg.assign{{.*}} metadata ![[ID1]]{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 4)
call void @llvm.dbg.assign(metadata i1 undef, metadata !14, metadata !DIExpression(), metadata !13, metadata ptr %a, metadata !DIExpression()), !dbg !15
; CHECK: %b = alloca{{.*}} !DIAssignID ![[ID2:[0-9]+]]
%b = alloca ptr, align 8, !DIAssignID !16
; CHECK: @llvm.dbg.assign{{.*}} metadata ![[ID2]]{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 5)
call void @llvm.dbg.assign(metadata i1 undef, metadata !17, metadata !DIExpression(), metadata !16, metadata ptr %b, metadata !DIExpression()), !dbg !15
call void @g(ptr %nodebug0, ptr %nodebug1, ptr %nodebug2, ptr %nodebug3, ptr %a, ptr %b)
ret void, !dbg !18
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #1

attributes #0 = { sanitize_memtag }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "x.c", directory: "/")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
!6 = !{!"clang"}
!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!8 = !DISubroutineType(types: !9)
!9 = !{null, !10}
!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
!11 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !12)
!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!13 = distinct !DIAssignID()
!14 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 1, type: !10)
!15 = !DILocation(line: 0, scope: !7)
!16 = distinct !DIAssignID()
!17 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 1, type: !10)
!18 = !DILocation(line: 1, column: 37, scope: !7)
55 changes: 55 additions & 0 deletions llvm/test/CodeGen/AArch64/stack-tagging-dbg-declare-tag-offset.ll
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; RUN: opt -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s

;; Also test with RemoveDIs to verify that debug intrinsics immediately
;; preceding an alloca (or other instruction of interest to stack tagging) will
;; be correctly processed.
; RUN: opt --try-experimental-debuginfo-iterators -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-android10000"

declare void @g(ptr, ptr, ptr, ptr, ptr, ptr)

define void @f() sanitize_memtag !dbg !6 {
entry:
%nodebug0 = alloca ptr
%nodebug1 = alloca ptr
%nodebug2 = alloca ptr
%nodebug3 = alloca ptr
%a = alloca ptr
; CHECK: @llvm.dbg.declare{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 4)
call void @llvm.dbg.declare(metadata ptr %a, metadata !12, metadata !DIExpression()), !dbg !14
; CHECK: @llvm.dbg.declare{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 4)
call void @llvm.dbg.declare(metadata ptr %a, metadata !12, metadata !DIExpression()), !dbg !14
%b = alloca ptr
; CHECK: @llvm.dbg.declare{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 5)
call void @llvm.dbg.declare(metadata ptr %b, metadata !13, metadata !DIExpression()), !dbg !14
; CHECK: @llvm.dbg.declare{{.*}} !DIExpression(DW_OP_LLVM_tag_offset, 5)
call void @llvm.dbg.declare(metadata ptr %b, metadata !13, metadata !DIExpression()), !dbg !14
call void @g(ptr %nodebug0, ptr %nodebug1, ptr %nodebug2, ptr %nodebug3, ptr %a, ptr %b)
ret void, !dbg !15
}

declare void @llvm.dbg.declare(metadata, metadata, metadata)

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "x.c", directory: "/")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{!"clang"}
!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags:
DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
!7 = !DISubroutineType(types: !8)
!8 = !{null, !9}
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
!10 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !11)
!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!12 = !DILocalVariable(name: "a", scope: !6, file: !1, line: 1, type: !9)
!13 = !DILocalVariable(name: "b", scope: !6, file: !1, line: 1, type: !9)
!14 = !DILocation(line: 1, column: 29, scope: !6)
!15 = !DILocation(line: 1, column: 37, scope: !6)
59 changes: 59 additions & 0 deletions llvm/test/CodeGen/AArch64/stack-tagging-dbg-value-tag-offset-nopad.ll
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; RUN: opt -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-android10000"

define dso_local void @f() sanitize_memtag !dbg !14 {
%a1 = alloca i128, align 4
%a2 = alloca i128, align 4
; CHECK: call void @llvm.dbg.value(metadata i128 1, {{.*}}, metadata !DIExpression())
call void @llvm.dbg.value(metadata i128 1, metadata !20, metadata !DIExpression()), !dbg !22
store i128 1, ptr %a2, align 4, !dbg !23, !tbaa !24
; CHECK: call void @llvm.dbg.value(metadata ptr %a1, {{.*}}, metadata !DIExpression(DW_OP_LLVM_tag_offset, 0, DW_OP_deref))
call void @llvm.dbg.value(metadata ptr %a1, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !22
call void @use(ptr nonnull %a1), !dbg !28
; CHECK: call void @llvm.dbg.value(metadata ptr %a2, {{.*}}, metadata !DIExpression(DW_OP_LLVM_tag_offset, 1, DW_OP_deref))
call void @llvm.dbg.value(metadata ptr %a2, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !22
call void @use(ptr nonnull %a2), !dbg !29
ret void, !dbg !30
}

declare !dbg !5 void @use(ptr)

declare void @llvm.dbg.value(metadata, metadata, metadata)

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9, !10, !11, !12}
!llvm.ident = !{!13}

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 10.0.0 ([email protected]:llvm/llvm-project.git 5560dd08b99a0e8b0c55116376624e4f967caec5)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "dbg.cc", directory: "/tmp")
!2 = !{}
!3 = !{!4, !5}
!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
!5 = !DISubprogram(name: "use", scope: !1, file: !1, line: 2, type: !6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!6 = !DISubroutineType(types: !7)
!7 = !{null, !4}
!8 = !{i32 7, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{i32 7, !"PIC Level", i32 2}
!12 = !{i32 7, !"PIE Level", i32 2}
!13 = !{!"clang version 10.0.0 ([email protected]:llvm/llvm-project.git 5560dd08b99a0e8b0c55116376624e4f967caec5)"}
!14 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 4, type: !15, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !17)
!15 = !DISubroutineType(types: !16)
!16 = !{null}
!17 = !{!18, !20}
!18 = !DILocalVariable(name: "x", scope: !14, file: !1, line: 5, type: !19)
!19 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!20 = !DILocalVariable(name: "y", scope: !14, file: !1, line: 5, type: !19)
!21 = !DILocation(line: 5, column: 3, scope: !14)
!22 = !DILocation(line: 0, scope: !14)
!23 = !DILocation(line: 5, column: 10, scope: !14)
!24 = !{!25, !25, i64 0}
!25 = !{!"int", !26, i64 0}
!26 = !{!"omnipotent char", !27, i64 0}
!27 = !{!"Simple C++ TBAA"}
!28 = !DILocation(line: 6, column: 3, scope: !14)
!29 = !DILocation(line: 7, column: 3, scope: !14)
!30 = !DILocation(line: 8, column: 1, scope: !14)
59 changes: 59 additions & 0 deletions llvm/test/CodeGen/AArch64/stack-tagging-dbg-value-tag-offset.ll
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; RUN: opt -aarch64-stack-tagging -stack-tagging-record-stack-history=instr -S -o - %s | FileCheck %s

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-android10000"

define dso_local void @f() sanitize_memtag !dbg !14 {
%a1 = alloca i32, align 4
%a2 = alloca i32, align 4
; CHECK: call void @llvm.dbg.value(metadata i32 1, {{.*}}, metadata !DIExpression())
call void @llvm.dbg.value(metadata i32 1, metadata !20, metadata !DIExpression()), !dbg !22
store i32 1, ptr %a2, align 4, !dbg !23, !tbaa !24
; CHECK: call void @llvm.dbg.value(metadata ptr %a1, {{.*}} metadata !DIExpression(DW_OP_LLVM_tag_offset, 0, DW_OP_deref))
call void @llvm.dbg.value(metadata ptr %a1, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !22
call void @use(ptr nonnull %a1), !dbg !28
; CHECK: call void @llvm.dbg.value(metadata ptr %a2, {{.*}} metadata !DIExpression(DW_OP_LLVM_tag_offset, 1, DW_OP_deref))
call void @llvm.dbg.value(metadata ptr %a2, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !22
call void @use(ptr nonnull %a2), !dbg !29
ret void, !dbg !30
}

declare !dbg !5 void @use(ptr)

declare void @llvm.dbg.value(metadata, metadata, metadata)

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9, !10, !11, !12}
!llvm.ident = !{!13}

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 10.0.0 ([email protected]:llvm/llvm-project.git 5560dd08b99a0e8b0c55116376624e4f967caec5)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "dbg.cc", directory: "/tmp")
!2 = !{}
!3 = !{!4, !5}
!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
!5 = !DISubprogram(name: "use", scope: !1, file: !1, line: 2, type: !6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!6 = !DISubroutineType(types: !7)
!7 = !{null, !4}
!8 = !{i32 7, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{i32 7, !"PIC Level", i32 2}
!12 = !{i32 7, !"PIE Level", i32 2}
!13 = !{!"clang version 10.0.0 ([email protected]:llvm/llvm-project.git 5560dd08b99a0e8b0c55116376624e4f967caec5)"}
!14 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 4, type: !15, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !17)
!15 = !DISubroutineType(types: !16)
!16 = !{null}
!17 = !{!18, !20}
!18 = !DILocalVariable(name: "x", scope: !14, file: !1, line: 5, type: !19)
!19 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!20 = !DILocalVariable(name: "y", scope: !14, file: !1, line: 5, type: !19)
!21 = !DILocation(line: 5, column: 3, scope: !14)
!22 = !DILocation(line: 0, scope: !14)
!23 = !DILocation(line: 5, column: 10, scope: !14)
!24 = !{!25, !25, i64 0}
!25 = !{!"int", !26, i64 0}
!26 = !{!"omnipotent char", !27, i64 0}
!27 = !{!"Simple C++ TBAA"}
!28 = !DILocation(line: 6, column: 3, scope: !14)
!29 = !DILocation(line: 7, column: 3, scope: !14)
!30 = !DILocation(line: 8, column: 1, scope: !14)
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