1# RUN: llc -run-pass=livedebugvalues -o - %s \ 2# RUN: -experimental-debug-variable-locations=false \ 3# RUN: | FileCheck %s --check-prefixes=CHECK,VARLOCLDV 4# 5# NB: clone of this file testing InstrRefBasedLDV is in 6# llvm/test/DebugInfo/MIR/X86/entry-value-of-modified-param.mir 7# 8#extern void fn1 (int, int, int); 9# 10#__attribute__((noinline)) 11#int 12#fn2 (int a, int b, int c) { 13# int q = 2 + a; 14# 15# fn1 (5, 6, q); 16# 17# b = b + 7; 18# if (b < 17) 19# return 1; 20# else 21# return 0; 22#} 23# 24# CHECK: ![[ARG_A:.*]] = !DILocalVariable(name: "a" 25# CHECK: ![[ARG_B:.*]] = !DILocalVariable(name: "b" 26# CHECK: ![[ARG_C:.*]] = !DILocalVariable(name: "c" 27## TODO: Support KILL instruction, which doesn't clobber parameter value. 28# VARLOCLDV: DBG_VALUE $edi, $noreg, ![[ARG_A]], !DIExpression() 29# CHECK: DBG_VALUE $edx, $noreg, ![[ARG_C]], !DIExpression(DW_OP_LLVM_entry_value, 1) 30# VARLOCLDV-NOT: DBG_VALUE $edi, $noreg, ![[ARG_A]], !DIExpression(DW_OP_LLVM_entry_value, 1) 31# CHECK-NOT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) 32# 33--- | 34 ; ModuleID = 'test.c' 35 source_filename = "test.c" 36 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 37 target triple = "x86_64-unknown-linux-gnu" 38 39 ; Function Attrs: noinline nounwind uwtable 40 define dso_local i32 @fn2(i32 %a, i32 %b, i32 %c) local_unnamed_addr !dbg !12 { 41 entry: 42 call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !20 43 call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression()), !dbg !20 44 call void @llvm.dbg.value(metadata i32 %c, metadata !18, metadata !DIExpression()), !dbg !20 45 %add = add nsw i32 %a, 2, !dbg !21 46 call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !20 47 tail call void @fn1(i32 5, i32 6, i32 %add), !dbg !22 48 call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression(DW_OP_plus_uconst, 7, DW_OP_stack_value)), !dbg !20 49 %cmp = icmp slt i32 %b, 10, !dbg !23 50 %. = zext i1 %cmp to i32, !dbg !25 51 ret i32 %., !dbg !26 52 } 53 54 declare !dbg !4 dso_local void @fn1(i32, i32, i32) local_unnamed_addr 55 56 ; Function Attrs: nounwind readnone speculatable willreturn 57 declare void @llvm.dbg.value(metadata, metadata, metadata) 58 59 !llvm.dbg.cu = !{!0} 60 !llvm.module.flags = !{!8, !9, !10} 61 !llvm.ident = !{!11} 62 63 !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) 64 !1 = !DIFile(filename: "test.c", directory: "/dir") 65 !2 = !{} 66 !3 = !{!4} 67 !4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 68 !5 = !DISubroutineType(types: !6) 69 !6 = !{null, !7, !7, !7} 70 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 71 !8 = !{i32 2, !"Dwarf Version", i32 4} 72 !9 = !{i32 2, !"Debug Info Version", i32 3} 73 !10 = !{i32 1, !"wchar_size", i32 4} 74 !11 = !{!"clang version 10.0.0"} 75 !12 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 5, type: !13, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15) 76 !13 = !DISubroutineType(types: !14) 77 !14 = !{!7, !7, !7, !7} 78 !15 = !{!16, !17, !18, !19} 79 !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 5, type: !7) 80 !17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 5, type: !7) 81 !18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !1, line: 5, type: !7) 82 !19 = !DILocalVariable(name: "q", scope: !12, file: !1, line: 7, type: !7) 83 !20 = !DILocation(line: 0, scope: !12) 84 !21 = !DILocation(line: 7, column: 15, scope: !12) 85 !22 = !DILocation(line: 9, column: 5, scope: !12) 86 !23 = !DILocation(line: 12, column: 11, scope: !24) 87 !24 = distinct !DILexicalBlock(scope: !12, file: !1, line: 12, column: 9) 88 !25 = !DILocation(line: 0, scope: !24) 89 !26 = !DILocation(line: 16, column: 1, scope: !12) 90 91... 92--- 93name: fn2 94alignment: 16 95body: | 96 bb.0.entry: 97 liveins: $edi, $esi, $rbx 98 99 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 100 DBG_VALUE $esi, $noreg, !17, !DIExpression(), debug-location !20 101 DBG_VALUE $edx, $noreg, !18, !DIExpression(), debug-location !20 102 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 103 CFI_INSTRUCTION def_cfa_offset 16 104 CFI_INSTRUCTION offset $rbx, -16 105 $ebx = MOV32rr $esi 106 DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20 107 renamable $edi = KILL $edi, implicit-def $rdi 108 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 109 renamable $edx = LEA64_32r killed renamable $rdi, 1, $noreg, 2, $noreg, debug-location !21 110 DBG_VALUE $edx, $noreg, !19, !DIExpression(), debug-location !20 111 $edi = MOV32ri 5, debug-location !22 112 $esi = MOV32ri 6, debug-location !22 113 CALL64pcrel32 @fn1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit-def $rsp, implicit-def $ssp, debug-location !22 114 DBG_VALUE $ebx, $noreg, !17, !DIExpression(DW_OP_plus_uconst, 7, DW_OP_stack_value), debug-location !20 115 renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !23 116 CMP32ri8 killed renamable $ebx, 10, implicit-def $eflags, debug-location !23 117 renamable $al = SETCCr 12, implicit killed $eflags, implicit killed $eax, implicit-def $eax, debug-location !23 118 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !26 119 CFI_INSTRUCTION def_cfa_offset 8, debug-location !26 120 RET64 $eax, debug-location !26 121 122... 123