a48e05030b
Two "totally definitely the last ones" instruction referencing test updates: * fp-stack.ll: this test targets i686, and so it won't be getting instruction referencing, or at least not right now, * X86/live-debug-values.ll: instruction referencing will produce entry values in this test, add check lines to account for this. It's not clear what the test is supposed to be testing anyway, but the entry values appear to be correct. Differential Revision: https://reviews.llvm.org/D114626
162 lines
6.9 KiB
LLVM
162 lines
6.9 KiB
LLVM
; RUN: llc -filetype=asm %s -o - -experimental-debug-variable-locations=false | FileCheck %s
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; RUN: llc -filetype=asm %s -o - -experimental-debug-variable-locations=true | FileCheck %s --check-prefixes=CHECK,INSTRREF
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; Test the extension of debug ranges from predecessors.
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; Generated from the source file LiveDebugValues.c:
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; #include <stdio.h>
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; int m;
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; extern int inc(int n);
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; extern int change(int n);
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; extern int modify(int n);
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; int main(int argc, char **argv) {
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; int n;
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; if (argc != 2)
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; n = 2;
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; else
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; n = atoi(argv[1]);
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; n = change(n);
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; if (n > 10) {
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; m = modify(n);
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; m = m + n; // var `m' doesn't has a dbg.value
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; }
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; else
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; m = inc(n); // var `m' doesn't has a dbg.value
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; printf("m(main): %d\n", m);
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; return 0;
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; }
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; with clang -g -O3 -emit-llvm -c LiveDebugValues.c -S -o live-debug-values.ll
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; This case will also produce multiple locations but only the debug range
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; extension is tested here.
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; DBG_VALUE for variable "n" is extended into %bb.5 from its predecessors %bb.3
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; and %bb.4.
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; CHECK: .LBB0_5:
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; INSTRREF-NEXT: #DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
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; INSTRREF-NEXT: #DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
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; CHECK-NEXT: #DEBUG_VALUE: main:n <- $ebx
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; Other register values have been clobbered.
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; CHECK-NOT: #DEBUG_VALUE:
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; CHECK: movl %e{{..}}, m(%rip)
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; ModuleID = 'LiveDebugValues.c'
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source_filename = "test/DebugInfo/X86/live-debug-values.ll"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@m = common dso_local global i32 0, align 4, !dbg !0
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@.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
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; Function Attrs: nounwind uwtable
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define dso_local i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !10 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %argc, metadata !17, metadata !20), !dbg !21
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tail call void @llvm.dbg.value(metadata i8** %argv, metadata !18, metadata !20), !dbg !22
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%cmp = icmp eq i32 %argc, 2, !dbg !24
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br i1 %cmp, label %if.else, label %if.end, !dbg !26
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if.else: ; preds = %entry
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%arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
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%0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
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%call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #1, !dbg !32
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tail call void @llvm.dbg.value(metadata i32 %call, metadata !19, metadata !20), !dbg !33
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br label %if.end
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if.end: ; preds = %if.else, %entry
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%n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
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%call1 = tail call i32 @change(i32 %n.0) #1, !dbg !34
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tail call void @llvm.dbg.value(metadata i32 %call1, metadata !19, metadata !20), !dbg !33
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%cmp2 = icmp sgt i32 %call1, 10, !dbg !35
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br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
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if.then.3: ; preds = %if.end
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%call4 = tail call i32 @modify(i32 %call1) #1, !dbg !38
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%add = add nsw i32 %call4, %call1, !dbg !40
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br label %if.end.7, !dbg !41
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if.else.5: ; preds = %if.end
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%call6 = tail call i32 @inc(i32 %call1) #1, !dbg !42
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br label %if.end.7
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if.end.7: ; preds = %if.else.5, %if.then.3
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%storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
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store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
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%call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #1, !dbg !46
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ret i32 0, !dbg !47
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}
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; Function Attrs: nounwind
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declare i32 @atoi(...) #1
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; Function Attrs: nounwind
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declare i32 @change(i32) #1
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; Function Attrs: nounwind
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declare i32 @modify(i32) #1
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; Function Attrs: nounwind
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declare i32 @inc(i32) #1
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; Function Attrs: nounwind
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declare i32 @printf(i8* nocapture readonly, ...) #1
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { nounwind uwtable }
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attributes #1 = { nounwind }
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attributes #2 = { nounwind readnone }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "m", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.8.0 (trunk 253049) "}
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!10 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 6, type: !11, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !16)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!6, !6, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64, align: 64)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64, align: 64)
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!15 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!16 = !{!17, !18, !19}
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!17 = !DILocalVariable(name: "argc", arg: 1, scope: !10, file: !3, line: 6, type: !6)
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!18 = !DILocalVariable(name: "argv", arg: 2, scope: !10, file: !3, line: 6, type: !13)
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!19 = !DILocalVariable(name: "n", scope: !10, file: !3, line: 7, type: !6)
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!20 = !DIExpression()
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!21 = !DILocation(line: 6, column: 14, scope: !10)
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!22 = !DILocation(line: 6, column: 27, scope: !23)
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!23 = !DILexicalBlockFile(scope: !10, file: !3, discriminator: 1)
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!24 = !DILocation(line: 8, column: 12, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !10, file: !3, line: 8, column: 7)
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!26 = !DILocation(line: 8, column: 7, scope: !10)
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!27 = !DILocation(line: 11, column: 14, scope: !25)
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!28 = !{!29, !29, i64 0}
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!29 = !{!"any pointer", !30, i64 0}
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!30 = !{!"omnipotent char", !31, i64 0}
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!31 = !{!"Simple C/C++ TBAA"}
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!32 = !DILocation(line: 11, column: 9, scope: !25)
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!33 = !DILocation(line: 7, column: 7, scope: !23)
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!34 = !DILocation(line: 12, column: 7, scope: !10)
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!35 = !DILocation(line: 13, column: 9, scope: !36)
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!36 = distinct !DILexicalBlock(scope: !10, file: !3, line: 13, column: 7)
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!37 = !DILocation(line: 13, column: 7, scope: !10)
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!38 = !DILocation(line: 14, column: 9, scope: !39)
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!39 = distinct !DILexicalBlock(scope: !36, file: !3, line: 13, column: 15)
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!40 = !DILocation(line: 15, column: 11, scope: !39)
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!41 = !DILocation(line: 16, column: 3, scope: !39)
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!42 = !DILocation(line: 18, column: 9, scope: !36)
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!43 = !DILocation(line: 15, column: 7, scope: !39)
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!44 = !{!45, !45, i64 0}
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!45 = !{!"int", !30, i64 0}
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!46 = !DILocation(line: 19, column: 3, scope: !10)
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!47 = !DILocation(line: 20, column: 3, scope: !10)
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