From 0b2d8ed86d2b625d6d1a588777a187c0333c6a87 Mon Sep 17 00:00:00 2001 From: Kai Nacke Date: Wed, 5 Feb 2014 07:23:09 +0000 Subject: [PATCH] ARM: Enable use of relocation type tlsldo in debug info for tls data. This fixes PR18554. Reviewers: Renato Golin, Keith Walker git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200826 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/ARMTargetObjectFile.cpp | 6 ++++++ lib/Target/ARM/ARMTargetObjectFile.h | 3 +++ test/DebugInfo/ARM/tls.ll | 28 ++++++++++++++++++++++++++ 3 files changed, 37 insertions(+) create mode 100644 test/DebugInfo/ARM/tls.ll diff --git a/lib/Target/ARM/ARMTargetObjectFile.cpp b/lib/Target/ARM/ARMTargetObjectFile.cpp index 1c5dc51e7fa..e6b8cce0915 100644 --- a/lib/Target/ARM/ARMTargetObjectFile.cpp +++ b/lib/Target/ARM/ARMTargetObjectFile.cpp @@ -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()); +} diff --git a/lib/Target/ARM/ARMTargetObjectFile.h b/lib/Target/ARM/ARMTargetObjectFile.h index 7f60727e530..cb86896c03a 100644 --- a/lib/Target/ARM/ARMTargetObjectFile.h +++ b/lib/Target/ARM/ARMTargetObjectFile.h @@ -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 diff --git a/test/DebugInfo/ARM/tls.ll b/test/DebugInfo/ARM/tls.ll new file mode 100644 index 00000000000..e54d1600476 --- /dev/null +++ b/test/DebugInfo/ARM/tls.ll @@ -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 "} -- 2.34.1