1; RUN: llc < %s | FileCheck %s 2; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s 3 4; This test ensures that no debuginfo is emitted for the constant "123456789" 5; string. These global variables have debug expressions because DWARF has the 6; ability to tie them to a file name and line number, but this isn't possible 7; in CodeView, so we make sure it's omitted to save file size. 8; 9; The various CodeView outputs should have a description of "my_string", but not 10; the string contents itself. 11 12; C++ source to regenerate: 13; $ cat a.cpp 14; char* my_string = 15; "12345679"; 16; 17; $ clang-cl a.cpp /GS- /Z7 /GR- /clang:-S /clang:-emit-llvm 18 19; CHECK-NOT: S_LDATA 20; CHECK: S_GDATA 21; CHECK-NOT: S_LDATA 22; CHECK-NOT: S_GDATA 23 24; ModuleID = '/tmp/a.c' 25source_filename = "/tmp/a.c" 26target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 27target triple = "x86_64-pc-windows-msvc19.20.0" 28 29$"??_C@_08HCBFHPJA@12345679?$AA@" = comdat any 30 31@"??_C@_08HCBFHPJA@12345679?$AA@" = linkonce_odr dso_local unnamed_addr constant [9 x i8] c"12345679\00", comdat, align 1, !dbg !0 32@my_string = dso_local global ptr @"??_C@_08HCBFHPJA@12345679?$AA@", align 8, !dbg !7 33 34!llvm.dbg.cu = !{!9} 35!llvm.linker.options = !{!13, !14} 36!llvm.module.flags = !{!15, !16, !17, !18, !19} 37!llvm.ident = !{!20} 38 39!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 40!1 = distinct !DIGlobalVariable(scope: null, file: !2, line: 2, type: !3, isLocal: true, isDefinition: true) 41!2 = !DIFile(filename: "/tmp/a.c", directory: "", checksumkind: CSK_MD5, checksum: "b972961d64de3c90497767110ab58eb6") 42!3 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 72, elements: !5) 43!4 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 44!5 = !{!6} 45!6 = !DISubrange(count: 9) 46!7 = !DIGlobalVariableExpression(var: !8, expr: !DIExpression()) 47!8 = distinct !DIGlobalVariable(name: "my_string", scope: !9, file: !2, line: 1, type: !12, isLocal: false, isDefinition: true) 48!9 = distinct !DICompileUnit(language: DW_LANG_C99, file: !10, producer: "clang version 15.0.0 (https://github.com/llvm/llvm-project.git 7c1c0849f8a1a6f1bf5f5b554484bbf8b0debd0a)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !11, splitDebugInlining: false, nameTableKind: None) 49!10 = !DIFile(filename: "/tmp/a.c", directory: "/usr/local/google/home/mitchp/llvm-build/opt", checksumkind: CSK_MD5, checksum: "b972961d64de3c90497767110ab58eb6") 50!11 = !{!0, !7} 51!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64) 52!13 = !{!"/DEFAULTLIB:libcmt.lib"} 53!14 = !{!"/DEFAULTLIB:oldnames.lib"} 54!15 = !{i32 2, !"CodeView", i32 1} 55!16 = !{i32 2, !"Debug Info Version", i32 3} 56!17 = !{i32 1, !"wchar_size", i32 2} 57!18 = !{i32 7, !"PIC Level", i32 2} 58!19 = !{i32 7, !"uwtable", i32 2} 59!20 = !{!"clang version 15.0.0 (https://github.com/llvm/llvm-project.git 7c1c0849f8a1a6f1bf5f5b554484bbf8b0debd0a)"} 60