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If the DIUnit has flags passed on it then have DW_AT_producer be a combination of DICompileUnit::Producer and Flags.

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The darwin behavior is unchanged and will continue to use DW_AT_APPLE_flags.

Patch by Zhizhou Yang

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299038 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2017-03-29 23:34:27 +00:00
parent 19db443310
commit fef24043fa
2 changed files with 52 additions and 1 deletions
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9
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -423,7 +423,14 @@ DwarfDebug::constructDwarfCompileUnit(const DICompileUnit *DIUnit) {
Asm->OutStreamer->getContext().setMCLineTableCompilationDir(
NewCU.getUniqueID(), CompilationDir);
NewCU.addString(Die, dwarf::DW_AT_producer, DIUnit->getProducer());
StringRef Producer = DIUnit->getProducer();
StringRef Flags = DIUnit->getFlags();
if (!Flags.empty()) {
std::string ProducerWithFlags = Producer.str() + " " + Flags.str();
NewCU.addString(Die, dwarf::DW_AT_producer, ProducerWithFlags);
} else
NewCU.addString(Die, dwarf::DW_AT_producer, Producer);
NewCU.addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
DIUnit->getSourceLanguage());
NewCU.addString(Die, dwarf::DW_AT_name, FN);

44
test/DebugInfo/X86/debug-info-producer-with-flags.ll Normal file
View File

@ -0,0 +1,44 @@
; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o %t -filetype=obj
; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
;
; Test the DW_AT_producer DWARG attribute.
; When producer and flags are both given in DIComileUnit, set DW_AT_producer
; as two values combined.
;
; The test splits into two parts, this is LLVM part. The frontend part can be
; found at llvm/tools/clang/test/Driver/debug-options.c.
;
; Generated and reduced from:
; clang++ -g -grecord-gcc-switches test.cc -S -llvm-emit -o -
;
; test.cc:
; int main() {
; return 0;
; }
; CHECK: DW_AT_producer
; CHECK-SAME: "clang++ -g -grecord-gcc-switches test.cc -S -emit-llvm -o -"
target triple = "x86_64-unknown-linux-gnu"
define i32 @main() !dbg !6 {
entry:
%retval = alloca i32, align 4
store i32 0, i32* %retval, align 4
ret i32 0, !dbg !10
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang++", isOptimized: false, flags: "-g -grecord-gcc-switches test.cc -S -emit-llvm -o -", runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "test.cc", directory: "d")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{!"clang"}
!6 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !7, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!7 = !DISubroutineType(types: !8)
!8 = !{!9}
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DILocation(line: 5, column: 3, scope: !6)