ef8992b9f0
This patch was reverted in 7c182663a857fc87 due to some failures observed on PCC based machines. Failures were due to Endianness issue and long double representation issues. Patch is revised to address Endianness issue. Furthermore, support for emission of `DW_OP_implicit_value` for `long double` has been removed (since it was unclean at the moment). Planning to handle this in a clean way soon! For more context, please refer to following review link. Reviewed By: aprantl Differential Revision: https://reviews.llvm.org/D83560
66 lines
2.8 KiB
LLVM
66 lines
2.8 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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; 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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;; 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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