| # RUN: llc -start-after=livedebugvalues -filetype=obj -o - %s \ |
| # RUN: | llvm-dwarfdump - | FileCheck %s |
| # CHECK: .debug_info contents: |
| # CHECK: DW_TAG_formal_parameter |
| # CHECK: DW_TAG_formal_parameter |
| # CHECK-NEXT: DW_AT_location |
| # CHECK-NEXT: [0x0000000000000010, 0x0000000000000014): DW_OP_reg1 W1 |
| # CHECK-NEXT: [0x0000000000000014, 0x0000000000000038): DW_OP_breg31 WSP+8 |
| # CHECK-NEXT: DW_AT_name {{.*}}"y" |
| |
| --- | |
| ; Generated at -Os from: |
| ; struct Rect { |
| ; double x, y, w, h; |
| ; }; |
| ; void g(struct Rect); |
| ; void h(int *); |
| ; int f(int x, int y, struct Rect s) { |
| ; g(s); |
| ; if (y) |
| ; h(&x); |
| ; return 0; |
| ; } |
| source_filename = "/tmp/clobber.c" |
| target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" |
| target triple = "arm64-apple-ios" |
| |
| %struct.Rect = type { double, double, double, double } |
| |
| ; Function Attrs: nounwind optsize ssp |
| define i32 @f(i32 %x, i32 %y, [4 x double] %s.coerce) local_unnamed_addr #0 !dbg !7 { |
| entry: |
| %x.addr = alloca i32, align 4 |
| tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !19, metadata !22), !dbg !23 |
| store i32 %x, i32* %x.addr, align 4, !tbaa !24 |
| tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !20, metadata !22), !dbg !28 |
| tail call void @llvm.dbg.declare(metadata %struct.Rect* undef, metadata !21, metadata !22), !dbg !29 |
| tail call void @g([4 x double] %s.coerce) #4, !dbg !30 |
| %tobool = icmp eq i32 %y, 0, !dbg !31 |
| br i1 %tobool, label %if.end, label %if.then, !dbg !33 |
| |
| if.then: ; preds = %entry |
| tail call void @llvm.dbg.value(metadata i32* %x.addr, i64 0, metadata !19, metadata !22), !dbg !23 |
| call void @h(i32* nonnull %x.addr) #4, !dbg !34 |
| br label %if.end, !dbg !34 |
| |
| if.end: ; preds = %if.then, %entry |
| ret i32 0, !dbg !35 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| declare void @g([4 x double]) local_unnamed_addr #2 |
| declare void @h(i32*) local_unnamed_addr #2 |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| declare void @llvm.stackprotector(i8*, i8**) #3 |
| |
| attributes #0 = { nounwind optsize ssp } |
| attributes #1 = { nounwind readnone speculatable } |
| attributes #2 = { optsize } |
| attributes #3 = { nounwind } |
| attributes #4 = { nounwind optsize } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 302682) (llvm/trunk 302683)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "/tmp/clobber.c", directory: "/Volumes/Data/apple-internal/swift") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 2} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 5.0.0 (trunk 302682) (llvm/trunk 302683)"} |
| !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 7, type: !8, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !18) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10, !10, !11} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Rect", file: !1, line: 1, size: 256, elements: !12) |
| !12 = !{!13, !15, !16, !17} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !11, file: !1, line: 2, baseType: !14, size: 64) |
| !14 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float) |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 64) |
| !16 = !DIDerivedType(tag: DW_TAG_member, name: "w", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 128) |
| !17 = !DIDerivedType(tag: DW_TAG_member, name: "h", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 192) |
| !18 = !{!19, !20, !21} |
| !19 = !DILocalVariable(name: "x", arg: 1, scope: !7, file: !1, line: 7, type: !10) |
| !20 = !DILocalVariable(name: "y", arg: 2, scope: !7, file: !1, line: 7, type: !10) |
| !21 = !DILocalVariable(name: "s", arg: 3, scope: !7, file: !1, line: 7, type: !11) |
| !22 = !DIExpression() |
| !23 = !DILocation(line: 7, column: 11, scope: !7) |
| !24 = !{!25, !25, i64 0} |
| !25 = !{!"int", !26, i64 0} |
| !26 = !{!"omnipotent char", !27, i64 0} |
| !27 = !{!"Simple C/C++ TBAA"} |
| !28 = !DILocation(line: 7, column: 18, scope: !7) |
| !29 = !DILocation(line: 7, column: 33, scope: !7) |
| !30 = !DILocation(line: 8, column: 3, scope: !7) |
| !31 = !DILocation(line: 9, column: 7, scope: !32) |
| !32 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 7) |
| !33 = !DILocation(line: 9, column: 7, scope: !7) |
| !34 = !DILocation(line: 10, column: 5, scope: !32) |
| !35 = !DILocation(line: 12, column: 3, scope: !7) |
| !36 = !DIExpression(DW_OP_constu, 8, DW_OP_plus) |
| |
| ... |
| --- |
| name: f |
| alignment: 4 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$w0' } |
| - { reg: '$w1' } |
| - { reg: '$d0' } |
| - { reg: '$d1' } |
| - { reg: '$d2' } |
| - { reg: '$d3' } |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 32 |
| offsetAdjustment: 0 |
| maxAlignment: 8 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| stack: |
| - { id: 0, name: x.addr, offset: -20, size: 4, alignment: 4, local-offset: -4 } |
| - { id: 1, type: spill-slot, offset: -24, size: 4, alignment: 4 } |
| - { id: 2, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' } |
| - { id: 3, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' } |
| body: | |
| bb.0.entry: |
| successors: %bb.2.if.end(0x40000000), %bb.1.if.then(0x40000000) |
| liveins: $w0, $w1, $d0, $d1, $d2, $d3, $lr |
| |
| $sp = frame-setup SUBXri $sp, 32, 0 |
| frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store (s64) into %stack.3), (store (s64) into %stack.2) |
| $fp = frame-setup ADDXri $sp, 16, 0 |
| DBG_VALUE $w0, _, !19, !22, debug-location !23 |
| STURWi killed $w0, $fp, -4 :: (store (s32) into %stack.0.x.addr) |
| DBG_VALUE $w1, _, !20, !22, debug-location !28 |
| STRWui killed $w1, $sp, 2, debug-location !30 :: (store (s32) into %stack.1) |
| DBG_VALUE $sp, 0, !20, !36, debug-location !28 |
| BL @g, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $d0, implicit killed $d1, implicit killed $d2, implicit killed $d3, implicit-def $sp, debug-location !30 |
| $w0 = LDRWui $sp, 2, debug-location !33 :: (load (s32) from %stack.1) |
| CBZW killed $w0, %bb.2.if.end, debug-location !33 |
| |
| bb.1.if.then: |
| successors: %bb.2.if.end(0x80000000) |
| |
| DBG_VALUE $sp, 0, !20, !36, debug-location !28 |
| $x0 = SUBXri $fp, 4, 0 |
| DBG_VALUE $x0, _, !19, !22, debug-location !23 |
| BL @h, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, debug-location !34 |
| |
| bb.2.if.end: |
| DBG_VALUE $sp, 0, !20, !36, debug-location !28 |
| $w8 = MOVZWi 0, 0 |
| $x0 = ORRXrs $xzr, undef $x8, 0, implicit killed $w8, debug-location !35 |
| $fp, $lr = LDPXi $sp, 2, debug-location !35 :: (load (s64) from %stack.3), (load (s64) from %stack.2) |
| $sp = ADDXri $sp, 32, 0, debug-location !35 |
| RET undef $lr, implicit killed $w0, debug-location !35 |
| |
| ... |