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102 lines
4.0 KiB
102 lines
4.0 KiB
4 months ago
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; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -stop-before=finalize-isel \
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; RUN: | FileCheck %s --check-prefix=NORMAL-INPUT
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; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -stop-before=finalize-isel \
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; RUN: -experimental-debug-variable-locations \
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; RUN: | FileCheck %s --check-prefix=EXPER-INPUT
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; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -stop-after=livedebugvars \
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; RUN: | FileCheck %s --check-prefix=OUTPUT
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; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - -stop-after=livedebugvars \
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; RUN: -experimental-debug-variable-locations \
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; RUN: | FileCheck %s --check-prefix=OUTPUT
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; This test checks that LiveDebugVariables strips all debug instructions
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; from nodebug functions. Such instructions occur when a function with debug
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; info is inlined into a nodebug function.
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; The test first verifies that DBG_VALUE/DBG_LABEL instructions are present in
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; the input to LiveDebugVariables. It then verifies that after the pass is ran
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; no debug instructions are present.
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; When -experimental-debug-variable-locations is enabled, certain variable
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; locations are represented by DBG_INSTR_REF instead of DBG_VALUE. The test
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; verifies that a DBG_INSTR_REF is emitted by the option, and that it is also
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; stripped.
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; Generated from:
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;
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; extern int foobar();
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;
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; int bar(int a) {
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; int b = 10;
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; b += foobar();
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; label:
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; if (a) goto label;
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; return b;
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; }
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;
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; __attribute__((nodebug))
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; int foo(int a) {
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; return bar(a);
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; }
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; NORMAL-INPUT-DAG: DBG_VALUE
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; NORMAL-INPUT-DAG: DBG_LABEL
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; EXPER-INPUT-DAG: DBG_INSTR_REF
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; EXPER-INPUT-DAG: DBG_LABEL
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; OUTPUT-NOT: DBG_VALUE
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; OUTPUT-NOT: DBG_INSTR_REF
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; OUTPUT-NOT: DBG_LABEL
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local i32 @_Z3fooi(i32 %a) local_unnamed_addr #0 {
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entry:
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call void @llvm.dbg.value(metadata i32 %a, metadata !12, metadata !DIExpression()), !dbg !15
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call void @llvm.dbg.value(metadata i32 10, metadata !13, metadata !DIExpression()), !dbg !15
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%call.i = tail call i32 @_Z6foobarv()
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call void @llvm.dbg.value(metadata i32 undef, metadata !13, metadata !DIExpression()), !dbg !15
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%tobool.not.i = icmp eq i32 %a, 0
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br i1 %tobool.not.i, label %_Z3bari.exit, label %label.i
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label.i: ; preds = %entry, %label.i
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call void @llvm.dbg.label(metadata !14), !dbg !18
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br label %label.i
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_Z3bari.exit: ; preds = %entry
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%add.i = add nsw i32 %call.i, 10
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call void @llvm.dbg.value(metadata i32 %add.i, metadata !13, metadata !DIExpression()), !dbg !15
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ret i32 %add.i
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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declare dso_local i32 @_Z6foobarv() local_unnamed_addr #1
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declare void @llvm.dbg.label(metadata) #2
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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_C_plus_plus_14, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "f.cpp", directory: "")
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!2 = !{}
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!3 = !{i32 7, !"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 12.0.0"}
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!7 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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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 = !{!12, !13, !14}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10)
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!13 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 4, type: !10)
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!14 = !DILabel(scope: !7, name: "label", file: !1, line: 6)
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!15 = !DILocation(line: 0, scope: !7)
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!18 = !DILocation(line: 6, column: 1, scope: !7)
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