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ARM: Enable use of relocation type tlsldo in debug info for tls data.

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This fixes PR18554.

Reviewers: Renato Golin, Keith Walker
llvm-svn: 200826
This commit is contained in:
Kai Nacke 2014-02-05 07:23:09 +00:00
parent 229a74634b
commit 6d1536fa76
3 changed files with 37 additions and 0 deletions
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6
lib/Target/ARM/ARMTargetObjectFile.cpp
View File

@ -51,3 +51,9 @@ getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
MCSymbolRefExpr::VK_ARM_TARGET2,
getContext());
}
const MCExpr *ARMElfTargetObjectFile::
getDebugThreadLocalSymbol(const MCSymbol *Sym) const {
return MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_ARM_TLSLDO,
getContext());
}

3
lib/Target/ARM/ARMTargetObjectFile.h
View File

@ -36,6 +36,9 @@ public:
virtual const MCSection *getAttributesSection() const {
return AttributesSection;
}
/// \brief Describe a TLS variable address within debug info.
virtual const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const;
};
} // end namespace llvm

28
test/DebugInfo/ARM/tls.ll Normal file
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@ -0,0 +1,28 @@
; RUN: llc -O0 -filetype=asm -mtriple=armv7-linux-gnuehabi < %s | FileCheck %s
;
; Generated with clang with source
; __thread int x;
@x = thread_local global i32 0, align 4
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!7, !8}
!llvm.ident = !{!9}
; 6 byte of data
; CHECK: .byte 6 @ DW_AT_location
; DW_OP_const4u
; CHECK: .byte 12
; The debug relocation of the address of the tls variable
; CHECK: .long x(tlsldo)
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !3, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/tls.c] [DW_LANG_C99]
!1 = metadata !{metadata !"tls.c", metadata !"/tmp"}
!2 = metadata !{}
!3 = metadata !{metadata !4}
!4 = metadata !{i32 786484, i32 0, null, metadata !"x", metadata !"x", metadata !"", metadata !5, i32 1, metadata !6, i32 0, i32 1, i32* @x, null} ; [ DW_TAG_variable ] [x] [line 1] [def]
!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/tls.c]
!6 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!8 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
!9 = metadata !{metadata !"clang version 3.5 "}