| # RUN: llc -debug-entry-values -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s |
| # |
| # The test case was artificially adjusted, in order to make proper diamond basic |
| # block structure relevant to the debug entry values clobbering. |
| # |
| # CHECK: ![[ARG_B:.*]] = !DILocalVariable(name: "b" |
| # CHECK: bb.0.entry |
| # CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() |
| # CHECK: bb.1.if.then |
| # CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() |
| # CHECK: $ebx = MOV32rr $esi |
| # CHECK-NEXT: DBG_VALUE $ebx, $noreg, ![[ARG_B]], !DIExpression() |
| # CHECK-NEXT: $esi = MOV32ri 5 |
| # CHECK-NEXT: $ebx = MOV32ri 1 |
| # CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) |
| # CHECK: bb.2.if.else |
| # CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() |
| # CHECK: $ebp = MOV32rr $esi |
| # CHECK: DBG_VALUE $ebp, $noreg, ![[ARG_B]], !DIExpression() |
| # CHECK-NEXT: $esi = MOV32ri 1 |
| # CHECK-NEXT: $ebp = MOV32ri 2 |
| # CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) |
| # CHECK: bb.3.if.end |
| # CHECK-NOT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) |
| # |
| --- | |
| ; ModuleID = 'test.c' |
| source_filename = "test.c" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: noinline nounwind uwtable |
| define dso_local i32 @fn2(i32 %a, i32 %b, i32 %c) local_unnamed_addr !dbg !12 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !20 |
| call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression()), !dbg !20 |
| call void @llvm.dbg.value(metadata i32 %c, metadata !18, metadata !DIExpression()), !dbg !20 |
| %add = add nsw i32 %a, 2, !dbg !21 |
| call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !20 |
| tail call void @fn1(i32 5, i32 6, i32 %add), !dbg !22 |
| %cmp = icmp slt i32 %b, 17, !dbg !23 |
| br i1 %cmp, label %if.then, label %if.else, !dbg !25 |
| |
| if.then: ; preds = %entry |
| %add1 = add nsw i32 %b, 7, !dbg !26 |
| call void @llvm.dbg.value(metadata i32 %add1, metadata !17, metadata !DIExpression()), !dbg !20 |
| tail call void @fn1(i32 5, i32 %add1, i32 %c), !dbg !28 |
| br label %if.end, !dbg !29 |
| |
| if.else: ; preds = %entry |
| %add2 = add nuw nsw i32 %b, 1, !dbg !30 |
| call void @llvm.dbg.value(metadata i32 %add2, metadata !17, metadata !DIExpression()), !dbg !20 |
| tail call void @fn1(i32 1, i32 %add2, i32 %c), !dbg !32 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %b.addr.0 = phi i32 [ %add1, %if.then ], [ %add2, %if.else ], !dbg !33 |
| call void @llvm.dbg.value(metadata i32 %b.addr.0, metadata !17, metadata !DIExpression()), !dbg !20 |
| ret i32 %b.addr.0, !dbg !34 |
| } |
| |
| declare !dbg !4 dso_local void @fn1(i32, i32, i32) local_unnamed_addr |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9, !10} |
| !llvm.ident = !{!11} |
| |
| !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) |
| !1 = !DIFile(filename: "test.c", directory: "/dir") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{null, !7, !7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !{i32 2, !"Dwarf Version", i32 4} |
| !9 = !{i32 2, !"Debug Info Version", i32 3} |
| !10 = !{i32 1, !"wchar_size", i32 4} |
| !11 = !{!"clang version 10.0.0"} |
| !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) |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{!7, !7, !7, !7} |
| !15 = !{!16, !17, !18, !19} |
| !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 5, type: !7) |
| !17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 5, type: !7) |
| !18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !1, line: 5, type: !7) |
| !19 = !DILocalVariable(name: "q", scope: !12, file: !1, line: 7, type: !7) |
| !20 = !DILocation(line: 0, scope: !12) |
| !21 = !DILocation(line: 7, column: 15, scope: !12) |
| !22 = !DILocation(line: 9, column: 5, scope: !12) |
| !23 = !DILocation(line: 11, column: 11, scope: !24) |
| !24 = distinct !DILexicalBlock(scope: !12, file: !1, line: 11, column: 9) |
| !25 = !DILocation(line: 11, column: 9, scope: !12) |
| !26 = !DILocation(line: 12, column: 13, scope: !27) |
| !27 = distinct !DILexicalBlock(scope: !24, file: !1, line: 11, column: 17) |
| !28 = !DILocation(line: 13, column: 8, scope: !27) |
| !29 = !DILocation(line: 14, column: 5, scope: !27) |
| !30 = !DILocation(line: 15, column: 13, scope: !31) |
| !31 = distinct !DILexicalBlock(scope: !24, file: !1, line: 14, column: 12) |
| !32 = !DILocation(line: 16, column: 7, scope: !31) |
| !33 = !DILocation(line: 0, scope: !24) |
| !34 = !DILocation(line: 19, column: 5, scope: !12) |
| |
| ... |
| --- |
| name: fn2 |
| alignment: 16 |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default, |
| callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '', |
| debug-info-expression: '', debug-info-location: '' } |
| - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default, |
| callee-saved-register: '$rbp', callee-saved-restored: true, debug-info-variable: '', |
| debug-info-expression: '', debug-info-location: '' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $edi, $edx, $esi, $rbp, $rbx |
| |
| DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 |
| DBG_VALUE $esi, $noreg, !17, !DIExpression(), debug-location !20 |
| DBG_VALUE $edx, $noreg, !18, !DIExpression(), debug-location !20 |
| frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 24 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 32 |
| CFI_INSTRUCTION offset $rbx, -24 |
| CFI_INSTRUCTION offset $rbp, -16 |
| $ebp = MOV32rr $edx |
| DBG_VALUE $ebp, $noreg, !18, !DIExpression(), debug-location !20 |
| renamable $edi = KILL $edi, implicit-def $rdi |
| DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 |
| renamable $edx = LEA64_32r killed renamable $rdi, 1, $noreg, 2, $noreg, debug-location !21 |
| DBG_VALUE $edx, $noreg, !19, !DIExpression(), debug-location !20 |
| $edi = MOV32ri 5, debug-location !22 |
| CMP32ri8 renamable $ebp, 16, implicit-def $eflags, debug-location !23 |
| JCC_1 %bb.2, 15, implicit killed $eflags, debug-location !25 |
| |
| bb.1.if.then: |
| successors: %bb.3(0x80000000) |
| liveins: $ebp, $ebx, $esi |
| |
| $ebx = MOV32rr $esi |
| DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20 |
| $esi = MOV32ri 5, debug-location !28 |
| $ebx = MOV32ri 1 |
| JMP_1 %bb.3 |
| |
| bb.2.if.else: |
| successors: %bb.3(0x80000000) |
| liveins: $ebp, $ebx, $esi |
| |
| $ebp = MOV32rr $esi |
| DBG_VALUE $ebp, $noreg, !17, !DIExpression(), debug-location !20 |
| $esi = MOV32ri 1, debug-location !32 |
| $ebp = MOV32ri 2 |
| |
| bb.3.if.end: |
| liveins: $ebx, $edi, $ebp |
| |
| $esi = MOV32rr $ebx, debug-location !33 |
| $edx = MOV32rr killed $ebp, debug-location !33 |
| CALL64pcrel32 @fn1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit-def $rsp, implicit-def $ssp, debug-location !33 |
| DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20 |
| $eax = MOV32rr killed $ebx, debug-location !34 |
| $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !34 |
| CFI_INSTRUCTION def_cfa_offset 24, debug-location !34 |
| $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34 |
| CFI_INSTRUCTION def_cfa_offset 16, debug-location !34 |
| $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !34 |
| RETQ killed $eax, debug-location !34 |
| |
| ... |
| |
