1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 < %s | FileCheck %s 3 4%struct.A = type { [100 x i32] } 5 6; The 64-bit pointer argument %arg1 will be split into two registers 7; and for its llvm.dbg.declare, DAG should emit two DBG_VALUE instructions 8; with the fragment expressions. 9define hidden void @ptr_arg_split_subregs(%struct.A* %arg1) #0 !dbg !9 { 10; CHECK-LABEL: ptr_arg_split_subregs: 11; CHECK: .Lfunc_begin0: 12; CHECK: .loc 1 5 0 ; example.cpp:5:0 13; CHECK-NEXT: .cfi_sections .debug_frame 14; CHECK-NEXT: .cfi_startproc 15; CHECK-NEXT: ; %bb.0: 16; CHECK-NEXT: ;DEBUG_VALUE: ptr_arg_split_subregs:a <- [DW_OP_LLVM_fragment 32 32] [$vgpr1+0] 17; CHECK-NEXT: ;DEBUG_VALUE: ptr_arg_split_subregs:a <- [DW_OP_LLVM_fragment 0 32] [$vgpr0+0] 18; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 19; CHECK-NEXT: v_mov_b32_e32 v2, 1 20; CHECK-NEXT: .Ltmp0: 21; CHECK-NEXT: .loc 1 7 13 prologue_end ; example.cpp:7:13 22; CHECK-NEXT: flat_store_dword v[0:1], v2 offset:396 23; CHECK-NEXT: .loc 1 8 5 ; example.cpp:8:5 24; CHECK-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0) 25; CHECK-NEXT: s_setpc_b64 s[30:31] 26; CHECK-NEXT: .Ltmp1: 27; CHECK: .cfi_endproc 28 call void @llvm.dbg.declare(metadata %struct.A* %arg1, metadata !20, metadata !DIExpression()), !dbg !21 29 %gep1 = getelementptr inbounds %struct.A, %struct.A* %arg1, i32 0, i32 0, i32 99, !dbg !22 30 store i32 1, i32* %gep1, align 4, !dbg !23 31 ret void, !dbg !24 32} 33 34; FIXME: The 64-bit pointer argument %arg2 will be split between a register and 35; the stack memory. The SelectionDAG though failed to emit the DBG_VALUE for the 36; split part in memory. The two DBG_VALUE instructions emitted in the output pattern 37; are totally misleading. The former represent part of the incoming argument in register 38; while the latter was emitted for the parameter copy to a virtual register inserted 39; at the function entry by DAGBuilder. 40define hidden void @ptr_arg_split_reg_mem(<30 x i32>, %struct.A* %arg2) #0 !dbg !25 { 41; CHECK-LABEL: ptr_arg_split_reg_mem: 42; CHECK: .Lfunc_begin1: 43; CHECK-NEXT: .loc 1 10 0 ; example.cpp:10:0 44; CHECK-NEXT: .cfi_startproc 45; CHECK-NEXT: ; %bb.0: 46; CHECK-NEXT: ;DEBUG_VALUE: ptr_arg_split_reg_mem:b <- [$vgpr30+0] 47; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 48; CHECK-NEXT: buffer_load_dword v31, off, s[0:3], s32{{$}} 49; CHECK-NEXT: v_mov_b32_e32 v0, 1 50; CHECK-NEXT: .Ltmp2: 51; CHECK-NEXT: .loc 1 12 13 prologue_end ; example.cpp:12:13 52; CHECK-NEXT: s_waitcnt vmcnt(0) 53; CHECK-NEXT: flat_store_dword v[30:31], v0 offset:396 54; CHECK-NEXT: .loc 1 13 5 ; example.cpp:13:5 55; CHECK-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0) 56; CHECK-NEXT: s_setpc_b64 s[30:31] 57; CHECK-NEXT: .Ltmp3: 58; CHECK: .cfi_endproc 59 call void @llvm.dbg.declare(metadata %struct.A* %arg2, metadata !26, metadata !DIExpression()), !dbg !27 60 %gep2 = getelementptr inbounds %struct.A, %struct.A* %arg2, i32 0, i32 0, i32 99, !dbg !28 61 store i32 1, i32* %gep2, align 4, !dbg !29 62 ret void, !dbg !30 63} 64 65; FIXME: The 64-bit pointer argument %arg3 will be entirely in the stack memory. 66; No DBG_VALUE emitted for the incoming argument in this case and it should be fixed. 67define hidden void @ptr_arg_in_memory(<32 x i32>, %struct.A* %arg3) #0 !dbg !31 { 68; CHECK-LABEL: ptr_arg_in_memory: 69; CHECK: .Lfunc_begin2: 70; CHECK-NEXT: .loc 1 15 0 ; example.cpp:15:0 71; CHECK-NEXT: .cfi_startproc 72; CHECK-NEXT: ; %bb.0: 73; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 74; CHECK-NEXT: buffer_load_dword v1, off, s[0:3], s32 offset:8 75; CHECK-NEXT: buffer_load_dword v0, off, s[0:3], s32 offset:4 76; CHECK-NEXT: v_mov_b32_e32 v2, 1 77; CHECK-NEXT: .Ltmp4: 78; CHECK-NEXT: .loc 1 17 13 prologue_end ; example.cpp:17:13 79; CHECK-NEXT: s_waitcnt vmcnt(0) 80; CHECK-NEXT: flat_store_dword v[0:1], v2 offset:396 81; CHECK-NEXT: .loc 1 18 5 ; example.cpp:18:5 82; CHECK-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0) 83; CHECK-NEXT: s_setpc_b64 s[30:31] 84; CHECK-NEXT: .Ltmp5: 85; CHECK: .cfi_endproc 86 call void @llvm.dbg.declare(metadata %struct.A* %arg3, metadata !32, metadata !DIExpression()), !dbg !33 87 %gep3 = getelementptr inbounds %struct.A, %struct.A* %arg3, i32 0, i32 0, i32 99, !dbg !34 88 store i32 1, i32* %gep3, align 4, !dbg !35 89 ret void, !dbg !36 90} 91 92declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 93 94attributes #0 = { nounwind } 95 96!llvm.dbg.cu = !{!0} 97!llvm.module.flags = !{!3, !4, !5, !6, !7} 98!llvm.ident = !{!8} 99 100!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 101!1 = !DIFile(filename: "example.cpp", directory: "temp") 102!2 = !{} 103!3 = !{i32 7, !"Dwarf Version", i32 4} 104!4 = !{i32 2, !"Debug Info Version", i32 3} 105!5 = !{i32 1, !"wchar_size", i32 4} 106!6 = !{i32 7, !"uwtable", i32 1} 107!7 = !{i32 7, !"frame-pointer", i32 2} 108!8 = !{!"clang version 13.0.0"} 109!9 = distinct !DISubprogram(name: "ptr_arg_split_subregs", scope: !10, file: !10, line: 5, type: !11, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 110!10 = !DIFile(filename: "example.cpp", directory: "temp") 111!11 = !DISubroutineType(types: !12) 112!12 = !{!13} 113!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !10, line: 1, size: 3200, flags: DIFlagTypePassByValue, elements: !14, identifier: "_ZTS1A") 114!14 = !{!15} 115!15 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !13, file: !10, line: 2, baseType: !16, size: 3200) 116!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 3200, elements: !18) 117!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 118!18 = !{!19} 119!19 = !DISubrange(count: 100) 120!20 = !DILocalVariable(name: "a", scope: !9, file: !10, line: 6, type: !13) 121!21 = !DILocation(line: 6, column: 7, scope: !9) 122!22 = !DILocation(line: 7, column: 7, scope: !9) 123!23 = !DILocation(line: 7, column: 13, scope: !9) 124!24 = !DILocation(line: 8, column: 5, scope: !9) 125!25 = distinct !DISubprogram(name: "ptr_arg_split_reg_mem", scope: !10, file: !10, line: 10, type: !11, scopeLine: 10, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 126!26 = !DILocalVariable(name: "b", scope: !25, file: !10, line: 11, type: !13) 127!27 = !DILocation(line: 11, column: 7, scope: !25) 128!28 = !DILocation(line: 12, column: 7, scope: !25) 129!29 = !DILocation(line: 12, column: 13, scope: !25) 130!30 = !DILocation(line: 13, column: 5, scope: !25) 131!31 = distinct !DISubprogram(name: "ptr_arg_in_memory", scope: !10, file: !10, line: 15, type: !11, scopeLine: 15, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 132!32 = !DILocalVariable(name: "c", scope: !31, file: !10, line: 16, type: !13) 133!33 = !DILocation(line: 16, column: 7, scope: !31) 134!34 = !DILocation(line: 17, column: 7, scope: !31) 135!35 = !DILocation(line: 17, column: 13, scope: !31) 136!36 = !DILocation(line: 18, column: 5, scope: !31) 137