1# We do not support the call site info for the target now, so we use the experimental option (-emit-call-site-info -debug-entry-values). 2 3# RUN: llc -emit-call-site-info -debug-entry-values -run-pass=livedebugvalues -o - %s | FileCheck %s 4 5# Verify that the entry values for the input parameters are inserted after the 6# bundles which contains the registers' clobbering instructions (the calls to 7# @clobber). Previously the insertions would thrash the bundles, later on 8# triggering a crash in DebugHandlerBase. 9 10--- | 11 target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" 12 target triple = "hexagon" 13 14 ; Function Attrs: nounwind 15 define i32 @foo(i32 %arg) !dbg !12 { 16 entry: 17 call void @llvm.dbg.value(metadata i32 %arg, metadata !16, metadata !DIExpression()), !dbg !17 18 %call = tail call i32 @clobber(), !dbg !18 19 ret i32 1, !dbg !19 20 } 21 22 declare !dbg !4 i32 @clobber() 23 24 ; Function Attrs: nounwind 25 define i32 @bar(i32 %b) !dbg !20 { 26 entry: 27 call void @llvm.dbg.value(metadata i32 %b, metadata !22, metadata !DIExpression()), !dbg !23 28 %tobool = icmp eq i32 %b, 0, !dbg !24 29 br i1 %tobool, label %land.end, label %land.rhs, !dbg !24 30 31 land.rhs: ; preds = %entry 32 %call = tail call i32 @clobber(), !dbg !25 33 br label %land.end 34 35 land.end: ; preds = %entry, %land.rhs 36 ret i32 undef, !dbg !27 37 } 38 39 ; Function Attrs: nounwind readnone speculatable 40 declare void @llvm.dbg.value(metadata, metadata, metadata) #0 41 42 attributes #0 = { nounwind readnone speculatable } 43 44 !llvm.dbg.cu = !{!0} 45 !llvm.module.flags = !{!8, !9, !10} 46 !llvm.ident = !{!11} 47 48 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None) 49 !1 = !DIFile(filename: "foo.c", directory: "/") 50 !2 = !{} 51 !3 = !{!4} 52 !4 = !DISubprogram(name: "clobber", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 53 !5 = !DISubroutineType(types: !6) 54 !6 = !{!7} 55 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 56 !8 = !{i32 2, !"Dwarf Version", i32 4} 57 !9 = !{i32 2, !"Debug Info Version", i32 3} 58 !10 = !{i32 1, !"wchar_size", i32 4} 59 !11 = !{!"clang version 10.0.0"} 60 !12 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15) 61 !13 = !DISubroutineType(types: !14) 62 !14 = !{!7, !7} 63 !15 = !{!16} 64 !16 = !DILocalVariable(name: "arg", arg: 1, scope: !12, file: !1, line: 3, type: !7) 65 !17 = !DILocation(line: 0, scope: !12) 66 !18 = !DILocation(line: 4, scope: !12) 67 !19 = !DILocation(line: 5, scope: !12) 68 !20 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 8, type: !13, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !21) 69 !21 = !{!22} 70 !22 = !DILocalVariable(name: "arg", arg: 1, scope: !20, file: !1, line: 8, type: !7) 71 !23 = !DILocation(line: 0, scope: !20) 72 !24 = !DILocation(line: 9, scope: !20) 73 !25 = !DILocation(line: 9, scope: !26) 74 !26 = distinct !DILexicalBlock(scope: !20, file: !1, line: 9) 75 !27 = !DILocation(line: 10, scope: !20) 76 77... 78--- 79name: foo 80tracksRegLiveness: true 81body: | 82 bb.0.entry: 83 DBG_VALUE $r0, $noreg, !16, !DIExpression(), debug-location !17 84 CFI_INSTRUCTION def_cfa $r30, 8 85 CFI_INSTRUCTION offset $r31, -4 86 CFI_INSTRUCTION offset $r30, -8 87 BUNDLE implicit-def $r29, implicit-def $r30, implicit-def dead $pc, implicit-def dead $r31, implicit-def dead $r0, implicit $r29, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !18 { 88 $r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !18 :: (store 4 into stack) 89 J2_call @clobber, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit internal killed $r29, implicit-def $r29, implicit-def dead $r0, debug-location !18 90 } 91 BUNDLE implicit-def dead $r0, implicit-def $d15, implicit-def $r30, implicit-def $r31, implicit-def $pc, implicit-def $r29, implicit killed $r30, implicit killed $framekey, debug-location !19 { 92 $r0 = A2_tfrsi 1, debug-location !19 93 $d15 = L4_return killed $r30, implicit-def $pc, implicit-def $r29, implicit killed $framekey, implicit-def dead $pc, implicit internal killed $r0, debug-location !19 94 } 95 96... 97 98# CHECK-LABEL: name: foo 99# CHECK: BUNDLE 100# CHECK-NEXT: $r29 = S2_allocframe $r29, 0 101# CHECK-NEXT: J2_call @clobber 102# CHECK-NEXT: } 103# CHECK-NEXT: DBG_VALUE $r0, $noreg, !16, !DIExpression(DW_OP_LLVM_entry_value, 1) 104 105--- 106name: bar 107tracksRegLiveness: true 108liveins: 109 - { reg: '$r0' } 110body: | 111 bb.0.entry: 112 successors: %bb.1 113 liveins: $r0 114 115 DBG_VALUE $r0, $noreg, !22, !DIExpression(), debug-location !23 116 DBG_VALUE $r0, $noreg, !22, !DIExpression(), debug-location !23 117 BUNDLE implicit-def dead $p0, implicit-def $pc, implicit killed $r0, implicit killed $r31, debug-location !24 { 118 renamable $p0 = C2_cmpeqi killed renamable $r0, 0, debug-location !24 119 PS_jmprettnew internal killed $p0, killed $r31, implicit-def $pc, implicit-def $pc, implicit killed undef $r0, debug-location !27 120 } 121 122 bb.1.land.rhs: 123 CFI_INSTRUCTION def_cfa $r30, 8 124 CFI_INSTRUCTION offset $r31, -4 125 CFI_INSTRUCTION offset $r30, -8 126 BUNDLE implicit-def $r29, implicit-def $r30, implicit-def $pc, implicit-def $r31, implicit-def dead $r0, implicit $r29, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !25 { 127 $r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !25 :: (store 4 into stack) 128 J2_call @clobber, hexagoncsr, implicit-def $pc, implicit-def $r31, implicit internal killed $r29, implicit-def $r29, implicit-def dead $r0, debug-location !25 129 } 130 $d15 = L2_deallocframe killed $r30, implicit-def $r29, implicit killed $framekey 131 PS_jmpret killed $r31, implicit-def $pc, implicit killed undef $r0, debug-location !27 132 133... 134 135# CHECK-LABEL: name: bar 136# CHECK: BUNDLE 137# CHECK: BUNDLE 138# CHECK-NEXT: $r29 = S2_allocframe $r29, 0 139# CHECK-NEXT: J2_call @clobber 140# CHECK-NEXT: } 141# CHECK-NEXT: DBG_VALUE $r0, $noreg, !22, !DIExpression(DW_OP_LLVM_entry_value, 1) 142