diff options
Diffstat (limited to 'llvm/test/DebugInfo/X86/spill-nontrivial-param.ll')
| -rw-r--r-- | llvm/test/DebugInfo/X86/spill-nontrivial-param.ll | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/X86/spill-nontrivial-param.ll b/llvm/test/DebugInfo/X86/spill-nontrivial-param.ll new file mode 100644 index 00000000000..9ac82374a0e --- /dev/null +++ b/llvm/test/DebugInfo/X86/spill-nontrivial-param.ll @@ -0,0 +1,89 @@ +; RUN: llc < %s | FileCheck %s + +; Make sure we insert DW_OP_deref when spilling indirect DBG_VALUE instructions. +; In this example, 'nt' is passed by address because it is not trivially +; copyable. When we spill the physical argument register at the barrier, we need +; to insert DW_OP_deref. + +; #define FORCE_SPILL() \ +; __asm volatile("" : : : \ +; "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \ +; "r9", "r10", "r11", "r12", "r13", "r14", "r15") +; struct NonTrivial { +; NonTrivial(); +; ~NonTrivial(); +; int i; +; }; +; int foo(NonTrivial nt) { +; FORCE_SPILL(); +; return nt.i; +; } + +; CHECK-LABEL: _Z3foo10NonTrivial: +; CHECK: #DEBUG_VALUE: foo:nt <- [%RDI+0] +; CHECK: movq %rdi, -8(%rsp) # 8-byte Spill +; CHECK: #DEBUG_VALUE: foo:nt <- [DW_OP_constu 8, DW_OP_minus, DW_OP_deref] [%RSP+0] +; CHECK: #APP +; CHECK: #NO_APP +; CHECK: movq -8(%rsp), %rax # 8-byte Reload +; CHECK: movl (%rax), %eax + +; ModuleID = 't.cpp' +source_filename = "t.cpp" +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64--linux" + +%struct.NonTrivial = type { i32 } + +; Function Attrs: nounwind uwtable +define i32 @_Z3foo10NonTrivial(%struct.NonTrivial* nocapture readonly %nt) local_unnamed_addr #0 !dbg !7 { +entry: + tail call void @llvm.dbg.declare(metadata %struct.NonTrivial* %nt, metadata !20, metadata !DIExpression()), !dbg !21 + 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 + %i = getelementptr inbounds %struct.NonTrivial, %struct.NonTrivial* %nt, i64 0, i32 0, !dbg !24 + %0 = load i32, i32* %i, align 4, !dbg !24, !tbaa !25 + ret i32 %0, !dbg !30 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 + +attributes #0 = { nounwind uwtable } +attributes #1 = { nounwind readnone speculatable } +attributes #2 = { nounwind } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4, !5} +!llvm.ident = !{!6} + +!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) +!1 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild") +!2 = !{} +!3 = !{i32 2, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{i32 1, !"wchar_size", i32 4} +!6 = !{!"clang version 6.0.0 "} +!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) +!8 = !DISubroutineType(types: !9) +!9 = !{!10, !11} +!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "NonTrivial", file: !1, line: 5, size: 32, elements: !12, identifier: "_ZTS10NonTrivial") +!12 = !{!13, !14, !18} +!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 8, baseType: !10, size: 32) +!14 = !DISubprogram(name: "NonTrivial", scope: !11, file: !1, line: 6, type: !15, isLocal: false, isDefinition: false, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true) +!15 = !DISubroutineType(types: !16) +!16 = !{null, !17} +!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) +!18 = !DISubprogram(name: "~NonTrivial", scope: !11, file: !1, line: 7, type: !15, isLocal: false, isDefinition: false, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true) +!19 = !{!20} +!20 = !DILocalVariable(name: "nt", arg: 1, scope: !7, file: !1, line: 10, type: !11) +!21 = !DILocation(line: 10, column: 20, scope: !7) +!22 = !DILocation(line: 11, column: 3, scope: !7) +!23 = !{i32 -2147471481} +!24 = !DILocation(line: 12, column: 13, scope: !7) +!25 = !{!26, !27, i64 0} +!26 = !{!"_ZTS10NonTrivial", !27, i64 0} +!27 = !{!"int", !28, i64 0} +!28 = !{!"omnipotent char", !29, i64 0} +!29 = !{!"Simple C++ TBAA"} +!30 = !DILocation(line: 12, column: 3, scope: !7) |
