1# RUN: llc %s -o - -filetype=obj -start-after=livedebugvalues \ 2# RUN: -emit-call-site-info | \ 3# RUN: llvm-dwarfdump - | FileCheck %s --implicit-check-not=call_value 4# 5## Test that call-site information is produced for this input, but use the 6## implicit not above to check that no call value entries are produced for 7## the tail call. They're clobbered by the restoration of r14 and rbx. 8## 9## Addresses https://github.com/llvm/llvm-project/issues/57444 10# 11# CHECK: DW_TAG_call_site 12# CHECK-NEXT: DW_AT_call_origin 13# CHECK-NEXT: DW_AT_call_return_pc 14# 15# CHECK: DW_TAG_call_site 16# CHECK-NEXT: DW_AT_call_origin 17# CHECK-NEXT: DW_AT_call_tail_call (true) 18# CHECK-NEXT: DW_AT_call_pc 19 20--- | 21 ; ModuleID = 'out.ll' 22 source_filename = "test.c" 23 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 24 target triple = "x86_64-unknown-linux-gnu" 25 26 @str = private unnamed_addr constant [5 x i8] c"ohai\00", align 1 27 28 ; Function Attrs: nounwind uwtable 29 define dso_local i32 @foo(i64 noundef %a, i64 noundef %b) local_unnamed_addr #0 !dbg !16 { 30 entry: 31 call void @llvm.dbg.value(metadata i64 %a, metadata !22, metadata !DIExpression()), !dbg !24 32 call void @llvm.dbg.value(metadata i64 %b, metadata !23, metadata !DIExpression()), !dbg !24 33 %call = tail call i32 (...) @baz() #5, !dbg !25 34 %conv = trunc i64 %a to i32, !dbg !26 35 %conv1 = trunc i64 %b to i32, !dbg !27 36 %call2 = tail call i32 @bar(i32 noundef %conv, i32 noundef %conv1) #5, !dbg !28 37 ret i32 %call2, !dbg !29 38 } 39 40 declare !dbg !30 i32 @baz(...) local_unnamed_addr #1 41 42 declare !dbg !34 i32 @bar(i32 noundef, i32 noundef) local_unnamed_addr #1 43 44 ; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) 45 declare void @llvm.dbg.value(metadata, metadata, metadata) #3 46 47 !llvm.dbg.cu = !{!0} 48 !llvm.module.flags = !{!9, !10, !11, !12, !13, !14} 49 !llvm.ident = !{!15} 50 51 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2, splitDebugInlining: false, nameTableKind: None) 52 !1 = !DIFile(filename: "test.c", directory: ".", checksumkind: CSK_MD5, checksum: "98e51a9cf3bc6e1c3cc216ca4c82353a") 53 !2 = !{!3} 54 !3 = !DIGlobalVariableExpression(var: !4, expr: !DIExpression()) 55 !4 = distinct !DIGlobalVariable(scope: null, file: !1, line: 11, type: !5, isLocal: true, isDefinition: true) 56 !5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 48, elements: !7) 57 !6 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 58 !7 = !{!8} 59 !8 = !DISubrange(count: 6) 60 !9 = !{i32 7, !"Dwarf Version", i32 5} 61 !10 = !{i32 2, !"Debug Info Version", i32 3} 62 !11 = !{i32 1, !"wchar_size", i32 4} 63 !12 = !{i32 8, !"PIC Level", i32 2} 64 !13 = !{i32 7, !"PIE Level", i32 2} 65 !14 = !{i32 7, !"uwtable", i32 2} 66 !15 = !{!"clang"} 67 !16 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 5, type: !17, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !21) 68 !17 = !DISubroutineType(types: !18) 69 !18 = !{!19, !20, !20} 70 !19 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 71 !20 = !DIBasicType(name: "long", size: 64, encoding: DW_ATE_signed) 72 !21 = !{!22, !23} 73 !22 = !DILocalVariable(name: "a", arg: 1, scope: !16, file: !1, line: 5, type: !20) 74 !23 = !DILocalVariable(name: "b", arg: 2, scope: !16, file: !1, line: 5, type: !20) 75 !24 = !DILocation(line: 0, scope: !16) 76 !25 = !DILocation(line: 6, column: 3, scope: !16) 77 !26 = !DILocation(line: 7, column: 14, scope: !16) 78 !27 = !DILocation(line: 7, column: 17, scope: !16) 79 !28 = !DILocation(line: 7, column: 10, scope: !16) 80 !29 = !DILocation(line: 7, column: 3, scope: !16) 81 !30 = !DISubprogram(name: "baz", scope: !1, file: !1, line: 4, type: !31, spFlags: DISPFlagOptimized, retainedNodes: !33) 82 !31 = !DISubroutineType(types: !32) 83 !32 = !{!19} 84 !33 = !{} 85 !34 = !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !35, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !33) 86 !35 = !DISubroutineType(types: !36) 87 !36 = !{!19, !19, !19} 88 !37 = distinct !DISubprogram(name: "qux", scope: !1, file: !1, line: 10, type: !31, scopeLine: 10, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !33) 89 !38 = !DILocation(line: 11, column: 3, scope: !37) 90 !39 = !DILocation(line: 12, column: 3, scope: !37) 91 92... 93--- 94name: foo 95alignment: 16 96tracksRegLiveness: true 97tracksDebugUserValues: true 98liveins: 99 - { reg: '$rdi' } 100 - { reg: '$rsi' } 101frameInfo: 102 stackSize: 24 103 offsetAdjustment: -24 104 maxAlignment: 1 105 adjustsStack: true 106 hasCalls: true 107 maxCallFrameSize: 0 108 cvBytesOfCalleeSavedRegisters: 16 109 hasTailCall: true 110fixedStack: 111 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' } 112 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$r14' } 113callSites: 114 - { bb: 0, offset: 15 } 115 - { bb: 0, offset: 28, fwdArgRegs: 116 - { arg: 0, reg: '$edi' } 117 - { arg: 1, reg: '$esi' } } 118debugValueSubstitutions: 119 - { srcinst: 2, srcop: 0, dstinst: 1, dstop: 0, subreg: 6 } 120 - { srcinst: 4, srcop: 0, dstinst: 3, dstop: 0, subreg: 6 } 121machineFunctionInfo: {} 122body: | 123 bb.0.entry: 124 liveins: $rdi, $rsi, $r14, $rbx 125 126 DBG_VALUE $rdi, $noreg, !22, !DIExpression(), debug-location !24 127 DBG_VALUE $rsi, $noreg, !23, !DIExpression(), debug-location !24 128 frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp 129 frame-setup CFI_INSTRUCTION def_cfa_offset 16 130 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 131 frame-setup CFI_INSTRUCTION def_cfa_offset 24 132 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp 133 frame-setup CFI_INSTRUCTION def_cfa_offset 32 134 CFI_INSTRUCTION offset $rbx, -24 135 CFI_INSTRUCTION offset $r14, -16 136 DBG_PHI $rsi, 3 137 DBG_PHI $rdi, 1 138 $rbx = MOV64rr $rsi 139 $r14 = MOV64rr $rdi 140 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !25 141 CALL64pcrel32 target-flags(x86-plt) @baz, csr_64, implicit $rsp, implicit $ssp, implicit killed $al, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eax, debug-location !25 142 DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !24 143 DBG_VALUE $r14, $noreg, !22, !DIExpression(), debug-location !24 144 $edi = MOV32rr $r14d, implicit killed $r14, debug-location !28 145 $esi = MOV32rr $ebx, implicit killed $rbx, debug-location !28 146 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !28 147 frame-destroy CFI_INSTRUCTION def_cfa_offset 24, debug-location !28 148 ;; This tail-call popping of rbx clobbers the call site information 149 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !28 150 DBG_VALUE $rsi, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !24 151 frame-destroy CFI_INSTRUCTION def_cfa_offset 16, debug-location !28 152 ;; This tail-call popping of r14 clobbers the call site information 153 $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !28 154 DBG_VALUE $rdi, $noreg, !22, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !24 155 frame-destroy CFI_INSTRUCTION def_cfa_offset 8, debug-location !28 156 TAILJMPd64 target-flags(x86-plt) @bar, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, debug-location !28 157 158... 159