| ; RUN: llc < %s -O0 -verify-machineinstrs | FileCheck %s |
| |
| ; Test verifies if .loc is properly set for loop and block instructions -- |
| ; the line number is not a 0 when DebugLoc is defined. |
| |
| ; Compiled from the dbg-loop-loc.c: |
| ; int fib(int n) { |
| ; int i, t, a = 0, b = 1; |
| ; for (i = 0; i < n; i++) { |
| ; t = a + b; a = b; b = t; |
| ; } |
| ; return b; |
| ; } |
| |
| ; ModuleID = 'dbg-loop-loc.bc' |
| source_filename = "dbg-loop-loc.c" |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown" |
| |
| ; CHECK: .file 1 |
| ; CHECK: .loc 1 1 0 |
| ; CHECK: .loc 1 3 15 |
| ; CHECK-NEXT: block |
| ; CHECK-NEXT: loop |
| ; CHECK: br 0 |
| ; CHECK-NOT: .loc 1 0 |
| ; CHECK: end_loop |
| ; CHECK: end_block |
| ; CHECK-NOT: .loc 1 0 |
| ; CHECK: end_function |
| |
| ; Function Attrs: noinline nounwind optnone |
| define hidden i32 @fib(i32 %n) #0 !dbg !7 { |
| entry: |
| %n.addr = alloca i32, align 4 |
| %i = alloca i32, align 4 |
| %t = alloca i32, align 4 |
| %a = alloca i32, align 4 |
| %b = alloca i32, align 4 |
| store i32 %n, i32* %n.addr, align 4 |
| call void @llvm.dbg.declare(metadata i32* %n.addr, metadata !11, metadata !DIExpression()), !dbg !12 |
| call void @llvm.dbg.declare(metadata i32* %i, metadata !13, metadata !DIExpression()), !dbg !14 |
| call void @llvm.dbg.declare(metadata i32* %t, metadata !15, metadata !DIExpression()), !dbg !16 |
| call void @llvm.dbg.declare(metadata i32* %a, metadata !17, metadata !DIExpression()), !dbg !18 |
| store i32 0, i32* %a, align 4, !dbg !18 |
| call void @llvm.dbg.declare(metadata i32* %b, metadata !19, metadata !DIExpression()), !dbg !20 |
| store i32 1, i32* %b, align 4, !dbg !20 |
| store i32 0, i32* %i, align 4, !dbg !21 |
| br label %for.cond, !dbg !23 |
| |
| for.cond: ; preds = %for.inc, %entry |
| %0 = load i32, i32* %i, align 4, !dbg !24 |
| %1 = load i32, i32* %n.addr, align 4, !dbg !26 |
| %cmp = icmp slt i32 %0, %1, !dbg !27 |
| br i1 %cmp, label %for.body, label %for.end, !dbg !28 |
| |
| for.body: ; preds = %for.cond |
| %2 = load i32, i32* %a, align 4, !dbg !29 |
| %3 = load i32, i32* %b, align 4, !dbg !31 |
| %add = add nsw i32 %2, %3, !dbg !32 |
| store i32 %add, i32* %t, align 4, !dbg !33 |
| %4 = load i32, i32* %b, align 4, !dbg !34 |
| store i32 %4, i32* %a, align 4, !dbg !35 |
| %5 = load i32, i32* %t, align 4, !dbg !36 |
| store i32 %5, i32* %b, align 4, !dbg !37 |
| br label %for.inc, !dbg !38 |
| |
| for.inc: ; preds = %for.body |
| %6 = load i32, i32* %i, align 4, !dbg !39 |
| %inc = add nsw i32 %6, 1, !dbg !39 |
| store i32 %inc, i32* %i, align 4, !dbg !39 |
| br label %for.cond, !dbg !40, !llvm.loop !41 |
| |
| for.end: ; preds = %for.cond |
| %7 = load i32, i32* %b, align 4, !dbg !43 |
| ret i32 %7, !dbg !44 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| 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" } |
| attributes #1 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "dbg-loop-loc.c", directory: "/Users/yury/llvmwasm") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 7.0.0 (trunk 326837)"} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DILocalVariable(name: "n", arg: 1, scope: !7, file: !1, line: 1, type: !10) |
| !12 = !DILocation(line: 1, column: 13, scope: !7) |
| !13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 2, type: !10) |
| !14 = !DILocation(line: 2, column: 7, scope: !7) |
| !15 = !DILocalVariable(name: "t", scope: !7, file: !1, line: 2, type: !10) |
| !16 = !DILocation(line: 2, column: 10, scope: !7) |
| !17 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !10) |
| !18 = !DILocation(line: 2, column: 13, scope: !7) |
| !19 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 2, type: !10) |
| !20 = !DILocation(line: 2, column: 20, scope: !7) |
| !21 = !DILocation(line: 3, column: 10, scope: !22) |
| !22 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3) |
| !23 = !DILocation(line: 3, column: 8, scope: !22) |
| !24 = !DILocation(line: 3, column: 15, scope: !25) |
| !25 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 3) |
| !26 = !DILocation(line: 3, column: 19, scope: !25) |
| !27 = !DILocation(line: 3, column: 17, scope: !25) |
| !28 = !DILocation(line: 3, column: 3, scope: !22) |
| !29 = !DILocation(line: 4, column: 9, scope: !30) |
| !30 = distinct !DILexicalBlock(scope: !25, file: !1, line: 3, column: 27) |
| !31 = !DILocation(line: 4, column: 13, scope: !30) |
| !32 = !DILocation(line: 4, column: 11, scope: !30) |
| !33 = !DILocation(line: 4, column: 7, scope: !30) |
| !34 = !DILocation(line: 4, column: 20, scope: !30) |
| !35 = !DILocation(line: 4, column: 18, scope: !30) |
| !36 = !DILocation(line: 4, column: 27, scope: !30) |
| !37 = !DILocation(line: 4, column: 25, scope: !30) |
| !38 = !DILocation(line: 5, column: 3, scope: !30) |
| !39 = !DILocation(line: 3, column: 23, scope: !25) |
| !40 = !DILocation(line: 3, column: 3, scope: !25) |
| !41 = distinct !{!41, !28, !42} |
| !42 = !DILocation(line: 5, column: 3, scope: !22) |
| !43 = !DILocation(line: 6, column: 10, scope: !7) |
| !44 = !DILocation(line: 6, column: 3, scope: !7) |