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1# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s -experimental-debug-variable-locations=false | FileCheck %s --implicit-check-not=DBG_VALUE_LIST2#3# Test that even after a move, clobbering a register terminates a DBG_VALUE_LIST.4# Check the same for DBG_VALUE $noreg.5#6# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c"7#8# CHECK-LABEL: bb.0.entry:9# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,10# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi11# CHECK: $rbx = COPY killed $rdi12# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,13# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi14# CHECK-LABEL: bb.1:15# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,16# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi17# CHECK: $rsi = MOV64ri 018# CHECK-LABEL: bb.2:19# no live-in!20# CHECK: $rsi = MOV64ri 021# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,22# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi23# CHECK-LABEL: bb.3:24# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,25# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi26# live-in to bb.3, then explicitly undef'd, should be no further locations27# propagated.28# CHECK-LABEL: bb.4:29--- |30 ; ModuleID = 'test.cpp'31 source_filename = "test.cpp"32 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"33 target triple = "x86_64-unknown-linux-gnu"34 35 ; Function Attrs: norecurse nounwind readnone uwtable36 define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 {37 entry:38 ret i32 0, !dbg !1739 }40 41 ; Function Attrs: nounwind readnone speculatable willreturn42 declare void @llvm.dbg.value(metadata, metadata, metadata)43 44 !llvm.dbg.cu = !{!0}45 !llvm.module.flags = !{!3, !4, !5}46 !llvm.ident = !{!6}47 48 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)49 !1 = !DIFile(filename: "test.cpp", directory: "/")50 !2 = !{}51 !3 = !{i32 7, !"Dwarf Version", i32 4}52 !4 = !{i32 2, !"Debug Info Version", i32 3}53 !5 = !{i32 1, !"wchar_size", i32 4}54 !6 = !{!"clang version 11.0.0"}55 !7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)56 !8 = !DISubroutineType(types: !9)57 !9 = !{!10, !10, !10}58 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)59 !11 = !{!12, !13, !14}60 !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)61 !13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10)62 !14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10)63 !15 = !DILocation(line: 0, scope: !7)64 !16 = !DILocation(line: 4, column: 12, scope: !7)65 !17 = !DILocation(line: 4, column: 3, scope: !7)66 67...68---69name: _Z3fooii70fixedStack:71 - { id: 0, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default,72 callee-saved-register: '$rbx', callee-saved-restored: true }73 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,74 callee-saved-register: '$rbp', callee-saved-restored: true }75body: |76 bb.0.entry:77 liveins: $rdi, $rsi78 79 DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !1580 $rbx = COPY killed $rdi81 $rdi = MOV64ri 082 JMP_1 %bb.183 84 bb.1:85 liveins: $rbx, $rsi86 $rsi = MOV64ri 087 JMP_1 %bb.288 89 bb.2:90 liveins: $rbx, $rsi91 92 $rsi = MOV64ri 093 DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi, debug-location !1594 JMP_1 %bb.395 96 bb.3:97 liveins: $rbx, $rsi98 DBG_VALUE $noreg, $noreg, !14, !DIExpression(), debug-location !1599 JMP_1 %bb.4100 101 bb.4:102 liveins: $rbx, $rsi103 RET64 $rbx, debug-location !17104 105...106 107