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300 lines
13 KiB
300 lines
13 KiB
# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
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# Test the extension of debug ranges from 3 predecessors.
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# Generated from the source file LiveDebugValues-3preds.c:
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# #include <stdio.h>
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# int add(int x, int y, int z, int a) {
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# int i;
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# for (i = 0; i < x * y; i++) {
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# if (i < x) {
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# a = a * x;
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# break;
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# }
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# if (i < y) {
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# a = a * y;
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# break;
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# }
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# if (i < z) {
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# a = a * z;
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# break;
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# }
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# }
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# return a;
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# }
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# with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll
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# then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir
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# DBG_VALUE for variables "x", "y" and "z" are extended into BB#9 from its
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# predecessors BB#0, BB#2 and BB#8.
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# CHECK: bb.9.for.end:
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# CHECK-DAG: DBG_VALUE debug-use %edi, debug-use _, !11, !16, debug-location !17
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# CHECK-DAG: DBG_VALUE debug-use %edx, debug-use _, !13, !16, debug-location !20
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# CHECK-DAG: DBG_VALUE debug-use %esi, debug-use _, !12, !16, debug-location !18
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# CHECK: RET
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--- |
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; ModuleID = 'live-debug-values-3preds.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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; Function Attrs: norecurse nounwind readnone uwtable
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define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18
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tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19
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tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21
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tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23
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tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25
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%mul = mul nsw i32 %y, %x, !dbg !26
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%cmp.24 = icmp sgt i32 %mul, 0, !dbg !30
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br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !32
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for.cond: ; preds = %if.end.6
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%cmp = icmp slt i32 %inc, %mul, !dbg !30
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br i1 %cmp, label %for.body, label %for.end, !dbg !31
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for.body: ; preds = %for.cond, %for.body.preheader
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%i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ]
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%0 = icmp sgt i32 %x, 0
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br i1 %0, label %if.then, label %if.end, !dbg !35
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if.then: ; preds = %for.body
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%mul2 = mul nsw i32 %a, %x, !dbg !36
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tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23
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br label %for.end, !dbg !38
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if.end: ; preds = %for.body
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%1 = icmp sgt i32 %y, 0
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br i1 %1, label %if.then.4, label %if.end.6, !dbg !39
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if.then.4: ; preds = %if.end
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%mul5 = mul nsw i32 %a, %y, !dbg !40
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tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23
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br label %for.end, !dbg !43
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if.end.6: ; preds = %if.end
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%2 = icmp sgt i32 %z, 0
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%inc = add nuw nsw i32 %i.025, 1, !dbg !44
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tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25
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br i1 %2, label %if.then.8, label %for.cond, !dbg !45
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if.then.8: ; preds = %if.end.6
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%mul9 = mul nsw i32 %a, %z, !dbg !46
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tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23
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br label %for.end, !dbg !49
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for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry
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%a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ]
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ret i32 %a.addr.0, !dbg !50
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { norecurse nounwind readnone uwtable }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!14, !15}
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!llvm.ident = !{!16}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !7, !7, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{!9, !10, !11, !12, !13}
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!9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7)
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!10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7)
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!11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7)
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!12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7)
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!13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7)
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!14 = !{i32 2, !"Dwarf Version", i32 4}
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!15 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !{!"clang version 3.8.0 (trunk 253049) "}
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!17 = !DIExpression()
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!18 = !DILocation(line: 1, column: 13, scope: !4)
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!19 = !DILocation(line: 1, column: 20, scope: !20)
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!20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
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!21 = !DILocation(line: 1, column: 27, scope: !22)
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!22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2)
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!23 = !DILocation(line: 1, column: 34, scope: !24)
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!24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
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!25 = !DILocation(line: 2, column: 7, scope: !20)
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!26 = !DILocation(line: 3, column: 21, scope: !27)
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!27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1)
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!28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3)
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!29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3)
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!30 = !DILocation(line: 3, column: 17, scope: !27)
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!31 = !DILocation(line: 3, column: 3, scope: !27)
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!32 = !DILocation(line: 4, column: 11, scope: !33)
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!33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9)
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!34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31)
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!35 = !DILocation(line: 4, column: 9, scope: !34)
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!36 = !DILocation(line: 5, column: 13, scope: !37)
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!37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16)
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!38 = !DILocation(line: 6, column: 7, scope: !37)
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!39 = !DILocation(line: 8, column: 9, scope: !34)
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!40 = !DILocation(line: 9, column: 13, scope: !41)
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!41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16)
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!42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9)
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!43 = !DILocation(line: 10, column: 7, scope: !41)
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!44 = !DILocation(line: 3, column: 27, scope: !28)
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!45 = !DILocation(line: 12, column: 9, scope: !34)
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!46 = !DILocation(line: 13, column: 13, scope: !47)
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!47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16)
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!48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9)
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!49 = !DILocation(line: 14, column: 7, scope: !47)
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!50 = !DILocation(line: 17, column: 3, scope: !4)
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...
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---
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name: add
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alignment: 4
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exposesReturnsTwice: false
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hasInlineAsm: false
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allVRegsAllocated: true
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isSSA: false
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tracksRegLiveness: true
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tracksSubRegLiveness: false
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liveins:
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- { reg: '%edi' }
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- { reg: '%esi' }
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- { reg: '%edx' }
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- { reg: '%ecx' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 0
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adjustsStack: false
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hasCalls: false
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maxCallFrameSize: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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body: |
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bb.0.entry:
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successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12)
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liveins: %ecx, %edi, %edx, %esi
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%r8d = MOV32rr %esi, debug-location !26
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%r8d = IMUL32rr killed %r8d, %edi, implicit-def dead %eflags, debug-location !26
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TEST32rr %r8d, %r8d, implicit-def %eflags, debug-location !31
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JLE_1 %bb.9.for.end, implicit %eflags
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bb.1.for.body.preheader:
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successors: %bb.3.for.body(0)
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liveins: %ecx, %edi, %edx, %esi, %r8d
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags
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bb.3.for.body (align 4):
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successors: %bb.4.if.then(4), %bb.5.if.end(124)
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liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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TEST32rr %edi, %edi, implicit-def %eflags, debug-location !35
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JG_1 %bb.4.if.then, implicit %eflags
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bb.5.if.end:
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successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124)
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liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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TEST32rr %esi, %esi, implicit-def %eflags, debug-location !39
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JG_1 %bb.6.if.then.4, implicit %eflags
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bb.7.if.end.6:
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successors: %bb.8.if.then.8(4), %bb.2.for.cond(124)
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liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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TEST32rr %edx, %edx, implicit-def %eflags, debug-location !45
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JG_1 %bb.8.if.then.8, implicit %eflags
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bb.2.for.cond:
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successors: %bb.3.for.body(124), %bb.9.for.end(4)
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liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%eax = INC32r killed %eax, implicit-def dead %eflags, debug-location !44
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DBG_VALUE debug-use %eax, debug-use _, !13, !17, debug-location !25
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CMP32rr %eax, %r8d, implicit-def %eflags, debug-location !31
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JL_1 %bb.3.for.body, implicit %eflags
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JMP_1 %bb.9.for.end
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bb.4.if.then:
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liveins: %ecx, %edi
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DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%ecx = IMUL32rr killed %ecx, killed %edi, implicit-def dead %eflags, debug-location !36
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%eax = MOV32rr killed %ecx, debug-location !50
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RETQ %eax, debug-location !50
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bb.6.if.then.4:
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liveins: %ecx, %esi
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DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%ecx = IMUL32rr killed %ecx, killed %esi, implicit-def dead %eflags, debug-location !40
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%eax = MOV32rr killed %ecx, debug-location !50
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RETQ %eax, debug-location !50
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bb.8.if.then.8:
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successors: %bb.9.for.end(0)
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liveins: %ecx, %edx
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DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
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DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%ecx = IMUL32rr killed %ecx, killed %edx, implicit-def dead %eflags, debug-location !46
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bb.9.for.end:
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liveins: %ecx
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DBG_VALUE 0, 0, !13, !17, debug-location !25
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%eax = MOV32rr killed %ecx, debug-location !50
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RETQ %eax, debug-location !50
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...
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