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Formally added an explicit enum for DWARF TLS support. No functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192118 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Mitton
2013-10-07 18:39:18 +00:00
parent c4a8c07f64
commit 379f76e873
3 changed files with 11 additions and 6 deletions
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7
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -1505,14 +1505,15 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
// 1) Start with a constNu of the appropriate pointer size
addUInt(Block, 0, dwarf::DW_FORM_data1,
PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
// 2) containing the (relocated) address of the TLS variable
// 2) containing the (relocated) offset of the TLS variable
// within the module's TLS block.
addExpr(Block, 0, dwarf::DW_FORM_udata, Expr);
} else {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
addUInt(Block, 0, dwarf::DW_FORM_udata, DU->getAddrPoolIndex(Expr));
}
// 3) followed by a custom OP to tell the debugger about TLS (presumably)
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_lo_user);
// 3) followed by a custom OP to make the debugger do a TLS lookup.
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_push_tls_address);
} else
addOpAddress(Block, Sym);
// Do not create specification DIE if context is either compile unit