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Differential D37911 Diff 115506 llvm/trunk/test/DebugInfo/X86/spill-nontrivial-param.ll

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llvm/trunk/test/DebugInfo/X86/spill-nontrivial-param.ll

1​; RUN: llc < %s | FileCheck %s
2​
3​; Make sure we insert DW_OP_deref when spilling indirect DBG_VALUE instructions.
4​; In this example, 'nt' is passed by address because it is not trivially
5​; copyable. When we spill the physical argument register at the barrier, we need
6​; to insert DW_OP_deref.
7​
8​; #define FORCE_SPILL() \
9​; __asm volatile("" : : : \
10​; "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \
11​; "r9", "r10", "r11", "r12", "r13", "r14", "r15")
12​; struct NonTrivial {
13​; NonTrivial();
14​; ~NonTrivial();
15​; int i;
16​; };
17​; int foo(NonTrivial nt) {
18​; FORCE_SPILL();
19​; return nt.i;
20​; }
21​
22​; CHECK-LABEL: _Z3foo10NonTrivial:
23​; CHECK: #DEBUG_VALUE: foo:nt <- [%RDI+0]
24​; CHECK: movq %rdi, -8(%rsp) # 8-byte Spill
25​; CHECK: #DEBUG_VALUE: foo:nt <- [DW_OP_constu 8, DW_OP_minus, DW_OP_deref] [%RSP+0]
26​; CHECK: #APP
27​; CHECK: #NO_APP
28​; CHECK: movq -8(%rsp), %rax # 8-byte Reload
29​; CHECK: movl (%rax), %eax
30​
31​; ModuleID = 't.cpp'
32​source_filename = "t.cpp"
33​target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
34​target triple = "x86_64--linux"
35​
36​%struct.NonTrivial = type { i32 }
37​
38​; Function Attrs: nounwind uwtable
39​define i32 @_Z3foo10NonTrivial(%struct.NonTrivial* nocapture readonly %nt) local_unnamed_addr #0 !dbg !7 {
40​entry:
41​ tail call void @llvm.dbg.declare(metadata %struct.NonTrivial* %nt, metadata !20, metadata !DIExpression()), !dbg !21
42​ tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #2, !dbg !22, !srcloc !23
43​ %i = getelementptr inbounds %struct.NonTrivial, %struct.NonTrivial* %nt, i64 0, i32 0, !dbg !24
44​ %0 = load i32, i32* %i, align 4, !dbg !24, !tbaa !25
45​ ret i32 %0, !dbg !30
46​}
47​
48​; Function Attrs: nounwind readnone speculatable
49​declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
50​
51​attributes #0 = { nounwind uwtable }
52​attributes #1 = { nounwind readnone speculatable }
53​attributes #2 = { nounwind }
54​
55​!llvm.dbg.cu = !{!0}
56​!llvm.module.flags = !{!3, !4, !5}
57​!llvm.ident = !{!6}
58​
59​!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
60​!1 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild")
61​!2 = !{}
62​!3 = !{i32 2, !"Dwarf Version", i32 4}
63​!4 = !{i32 2, !"Debug Info Version", i32 3}
64​!5 = !{i32 1, !"wchar_size", i32 4}
65​!6 = !{!"clang version 6.0.0 "}
66​!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foo10NonTrivial", scope: !1, file: !1, line: 10, type: !8, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !19)
67​!8 = !DISubroutineType(types: !9)
68​!9 = !{!10, !11}
69​!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
70​!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "NonTrivial", file: !1, line: 5, size: 32, elements: !12, identifier: "_ZTS10NonTrivial")
71​!12 = !{!13, !14, !18}
72​!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 8, baseType: !10, size: 32)
73​!14 = !DISubprogram(name: "NonTrivial", scope: !11, file: !1, line: 6, type: !15, isLocal: false, isDefinition: false, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true)
74​!15 = !DISubroutineType(types: !16)
75​!16 = !{null, !17}
76​!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
77​!18 = !DISubprogram(name: "~NonTrivial", scope: !11, file: !1, line: 7, type: !15, isLocal: false, isDefinition: false, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true)
78​!19 = !{!20}
79​!20 = !DILocalVariable(name: "nt", arg: 1, scope: !7, file: !1, line: 10, type: !11)
80​!21 = !DILocation(line: 10, column: 20, scope: !7)
81​!22 = !DILocation(line: 11, column: 3, scope: !7)
82​!23 = !{i32 -2147471481}
83​!24 = !DILocation(line: 12, column: 13, scope: !7)
84​!25 = !{!26, !27, i64 0}
85​!26 = !{!"_ZTS10NonTrivial", !27, i64 0}
86​!27 = !{!"int", !28, i64 0}
87​!28 = !{!"omnipotent char", !29, i64 0}
88​!29 = !{!"Simple C++ TBAA"}
89​!30 = !DILocation(line: 12, column: 3, scope: !7)