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