134 lines
5.9 KiB
LLVM
134 lines
5.9 KiB
LLVM
; RUN: llc < %s -O0 -verify-machineinstrs | FileCheck %s
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; Test verifies if .loc is properly set for loop and block instructions --
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; the line number is not a 0 when DebugLoc is defined.
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; Compiled from the dbg-loop-loc.c:
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; int fib(int n) {
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; int i, t, a = 0, b = 1;
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; for (i = 0; i < n; i++) {
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; t = a + b; a = b; b = t;
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; }
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; return b;
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; }
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; ModuleID = 'dbg-loop-loc.bc'
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source_filename = "dbg-loop-loc.c"
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; CHECK: .file 1
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; CHECK: .loc 1 1 0
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; CHECK: .loc 1 3 15
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; CHECK-NEXT: block
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; CHECK-NEXT: loop
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; CHECK: br 0
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; CHECK-NOT: .loc 1 0
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; CHECK: end_loop
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; CHECK: end_block
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; CHECK-NOT: .loc 1 0
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; CHECK: end_function
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; Function Attrs: noinline nounwind optnone
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define hidden i32 @fib(i32 %n) #0 !dbg !7 {
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entry:
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%n.addr = alloca i32, align 4
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%i = alloca i32, align 4
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%t = alloca i32, align 4
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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store i32 %n, i32* %n.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %n.addr, metadata !11, metadata !DIExpression()), !dbg !12
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call void @llvm.dbg.declare(metadata i32* %i, metadata !13, metadata !DIExpression()), !dbg !14
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call void @llvm.dbg.declare(metadata i32* %t, metadata !15, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.declare(metadata i32* %a, metadata !17, metadata !DIExpression()), !dbg !18
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store i32 0, i32* %a, align 4, !dbg !18
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call void @llvm.dbg.declare(metadata i32* %b, metadata !19, metadata !DIExpression()), !dbg !20
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store i32 1, i32* %b, align 4, !dbg !20
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store i32 0, i32* %i, align 4, !dbg !21
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br label %for.cond, !dbg !23
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for.cond: ; preds = %for.inc, %entry
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%0 = load i32, i32* %i, align 4, !dbg !24
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%1 = load i32, i32* %n.addr, align 4, !dbg !26
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%cmp = icmp slt i32 %0, %1, !dbg !27
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br i1 %cmp, label %for.body, label %for.end, !dbg !28
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for.body: ; preds = %for.cond
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%2 = load i32, i32* %a, align 4, !dbg !29
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%3 = load i32, i32* %b, align 4, !dbg !31
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%add = add nsw i32 %2, %3, !dbg !32
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store i32 %add, i32* %t, align 4, !dbg !33
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%4 = load i32, i32* %b, align 4, !dbg !34
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store i32 %4, i32* %a, align 4, !dbg !35
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%5 = load i32, i32* %t, align 4, !dbg !36
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store i32 %5, i32* %b, align 4, !dbg !37
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br label %for.inc, !dbg !38
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for.inc: ; preds = %for.body
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%6 = load i32, i32* %i, align 4, !dbg !39
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%inc = add nsw i32 %6, 1, !dbg !39
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store i32 %inc, i32* %i, align 4, !dbg !39
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br label %for.cond, !dbg !40, !llvm.loop !41
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for.end: ; preds = %for.cond
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%7 = load i32, i32* %b, align 4, !dbg !43
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ret i32 %7, !dbg !44
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 326837)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "dbg-loop-loc.c", directory: "/Users/yury/llvmwasm")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 7.0.0 (trunk 326837)"}
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!7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "n", arg: 1, scope: !7, file: !1, line: 1, type: !10)
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!12 = !DILocation(line: 1, column: 13, scope: !7)
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!13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 2, type: !10)
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!14 = !DILocation(line: 2, column: 7, scope: !7)
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!15 = !DILocalVariable(name: "t", scope: !7, file: !1, line: 2, type: !10)
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!16 = !DILocation(line: 2, column: 10, scope: !7)
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!17 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !10)
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!18 = !DILocation(line: 2, column: 13, scope: !7)
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!19 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 2, type: !10)
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!20 = !DILocation(line: 2, column: 20, scope: !7)
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!21 = !DILocation(line: 3, column: 10, scope: !22)
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!22 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)
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!23 = !DILocation(line: 3, column: 8, scope: !22)
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!24 = !DILocation(line: 3, column: 15, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 3)
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!26 = !DILocation(line: 3, column: 19, scope: !25)
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!27 = !DILocation(line: 3, column: 17, scope: !25)
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!28 = !DILocation(line: 3, column: 3, scope: !22)
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!29 = !DILocation(line: 4, column: 9, scope: !30)
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!30 = distinct !DILexicalBlock(scope: !25, file: !1, line: 3, column: 27)
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!31 = !DILocation(line: 4, column: 13, scope: !30)
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!32 = !DILocation(line: 4, column: 11, scope: !30)
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!33 = !DILocation(line: 4, column: 7, scope: !30)
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!34 = !DILocation(line: 4, column: 20, scope: !30)
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!35 = !DILocation(line: 4, column: 18, scope: !30)
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!36 = !DILocation(line: 4, column: 27, scope: !30)
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!37 = !DILocation(line: 4, column: 25, scope: !30)
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!38 = !DILocation(line: 5, column: 3, scope: !30)
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!39 = !DILocation(line: 3, column: 23, scope: !25)
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!40 = !DILocation(line: 3, column: 3, scope: !25)
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!41 = distinct !{!41, !28, !42}
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!42 = !DILocation(line: 5, column: 3, scope: !22)
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!43 = !DILocation(line: 6, column: 10, scope: !7)
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!44 = !DILocation(line: 6, column: 3, scope: !7)
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