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b398ab2619
This patch enables emitting DWARF `DW_OP_implicit_value` opcode when tuning debug information for LLDB (`-debugger-tune=lldb`). This will also propagate to Darwin platforms, since they use LLDB tuning as a default. rdar://67406059 Differential Revision: https://reviews.llvm.org/D90001 Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
75 lines
3.2 KiB
LLVM
75 lines
3.2 KiB
LLVM
;; This test checks for emission of DW_OP_implicit_value operation
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;; for float type.
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; RUN: llc -debugger-tune=gdb -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc -debugger-tune=lldb -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location ({{.*}}
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; CHECK-NEXT: [{{.*}}): DW_OP_implicit_value 0x4 0xc3 0xf5 0x48 0x40)
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; CHECK-NEXT: DW_AT_name ("f")
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; RUN: llc -debugger-tune=sce -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s -check-prefix=SCE-CHECK
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; SCE-CHECK: .debug_info contents:
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; SCE-CHECK: DW_TAG_variable
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; SCE-CHECK-NEXT: DW_AT_location ({{.*}}
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; SCE-CHECK-NEXT: [{{.*}}): DW_OP_constu 0x4048f5c3, DW_OP_stack_value)
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; SCE-CHECK-NEXT: DW_AT_name ("f")
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;; Generated from: clang -ggdb -O1
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;;int main() {
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;; float f = 3.14f;
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;; printf("dummy\n");
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;; f *= f;
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;; return 0;
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;;}
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; ModuleID = 'implicit_value-float.c'
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source_filename = "implicit_value-float.c"
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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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@str = private unnamed_addr constant [6 x i8] c"dummy\00", align 1
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; Function Attrs: nofree nounwind uwtable
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define dso_local i32 @main() local_unnamed_addr #0 !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata float 0x40091EB860000000, metadata !12, metadata !DIExpression()), !dbg !14
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%puts = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @str, i64 0, i64 0)), !dbg !15
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call void @llvm.dbg.value(metadata float undef, metadata !12, metadata !DIExpression()), !dbg !14
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ret i32 0, !dbg !16
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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; Function Attrs: nofree nounwind
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declare i32 @puts(i8* nocapture readonly) local_unnamed_addr #2
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attributes #0 = { nofree nounwind uwtable }
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attributes #1 = { nounwind readnone speculatable willreturn }
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attributes #2 = { nofree nounwind }
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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 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "implicit_value-float.c", directory: "/home/")
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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 11.0.0"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "f", scope: !7, file: !1, line: 2, type: !13)
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!13 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!14 = !DILocation(line: 0, scope: !7)
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!15 = !DILocation(line: 3, column: 2, scope: !7)
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!16 = !DILocation(line: 5, column: 2, scope: !7)
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