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1# RUN: llc -run-pass=livedebugvalues -verify-machineinstrs -mtriple=x86_64 -o - %s | FileCheck %s2# RUN: llc -force-instr-ref-livedebugvalues=1 -run-pass=livedebugvalues -verify-machineinstrs -mtriple=x86_64 -o - %s | FileCheck %s3#4#extern void fn2(int);5#6#__attribute__((noinline))7#void8#fn1 (int x, int y) {9# int u = x + y;10# if (x > 1)11# u += 1;12# else13# u += 2;14# int a = 7;15# fn2 (a);16# u --;17#}18# CHECK: DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}19# CHECK-NOT: DBG_VALUE $esi, $noreg, !15, !DIExpression(DW_OP_LLVM_entry_value, 1)20 21--- |22 ; ModuleID = 'test.c'23 source_filename = "test.c"24 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"25 26 ; Function Attrs: noinline nounwind uwtable27 define dso_local void @fn1(i32 %x, i32 %y) local_unnamed_addr !dbg !9 {28 entry:29 call void @llvm.dbg.value(metadata i32 %x, metadata !14, metadata !DIExpression()), !dbg !1830 call void @llvm.dbg.value(metadata i32 %y, metadata !15, metadata !DIExpression()), !dbg !1831 call void @llvm.dbg.value(metadata i32 7, metadata !17, metadata !DIExpression()), !dbg !1832 tail call void @fn2(i32 7), !dbg !1833 ret void, !dbg !1834 }35 36 declare !dbg !4 dso_local void @fn2(i32) local_unnamed_addr37 38 ; Function Attrs: nounwind readnone speculatable39 declare void @llvm.dbg.value(metadata, metadata, metadata)40 41 42 !llvm.dbg.cu = !{!0}43 !llvm.module.flags = !{!5, !6, !7}44 !llvm.ident = !{!8}45 46 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)47 !1 = !DIFile(filename: "test.c", directory: "/dir")48 !2 = !{}49 !3 = !{!4}50 !4 = !DISubprogram(name: "fn2", scope: !1, file: !1, line: 11, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)51 !5 = !{i32 2, !"Dwarf Version", i32 4}52 !6 = !{i32 2, !"Debug Info Version", i32 3}53 !7 = !{i32 1, !"wchar_size", i32 4}54 !8 = !{!"clang version 9.0.0"}55 !9 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 15, type: !10, scopeLine: 15, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)56 !10 = !DISubroutineType(types: !11)57 !11 = !{null, !12, !12}58 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)59 !13 = !{!14, !15, !16, !17}60 !14 = !DILocalVariable(name: "x", arg: 1, scope: !9, file: !1, line: 15, type: !12)61 !15 = !DILocalVariable(name: "y", arg: 2, scope: !9, file: !1, line: 15, type: !12)62 !16 = !DILocalVariable(name: "u", scope: !9, file: !1, line: 16, type: !12)63 !17 = !DILocalVariable(name: "a", scope: !9, file: !1, line: 21, type: !12)64 !18 = !DILocation(line: 15, column: 10, scope: !9)65 66...67---68name: fn169alignment: 1670tracksRegLiveness: true71liveins: []72body: |73 bb.0.entry:74 DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !1875 DBG_VALUE $esi, $noreg, !15, !DIExpression(), debug-location !1876 DBG_VALUE 7, $noreg, !17, !DIExpression(), debug-location !1877 $edi = MOV32ri 7, debug-location !1878 TAILJMPd64 @fn2, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit killed $edi, debug-location !1879 80...81