From 94ed5fca3f5ab5acb74e70b8393b837131e7110c Mon Sep 17 00:00:00 2001 From: Rafael Espindola Date: Mon, 15 Nov 2010 16:33:49 +0000 Subject: Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original variable if recursing fails to simplify it. Factor AliasedSymbol to be a method of MCSymbol. Update MCAssembler::EvaluateFixup to match the change in EvaluateAsRelocatableImpl. Remove the WeakRefExpr hack, as the object writer now sees the weakref with no extra effort needed. Nothing else is using MCTargetExpr, but keep it for now. Now that the ELF writer sees relocations with aliases, handle .weak foo2 foo2: .weak bar2 .set bar2,foo2 .quad bar2 the same way gas does and produce a relocation with bar2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119152 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/MC/MCSymbol.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'lib/MC/MCSymbol.cpp') diff --git a/lib/MC/MCSymbol.cpp b/lib/MC/MCSymbol.cpp index ebd3144..1c71f26 100644 --- a/lib/MC/MCSymbol.cpp +++ b/lib/MC/MCSymbol.cpp @@ -39,6 +39,18 @@ static bool NameNeedsQuoting(StringRef Str) { return false; } +const MCSymbol &MCSymbol::AliasedSymbol() const { + const MCSymbol *S = this; + while (S->isVariable()) { + const MCExpr *Value = S->getVariableValue(); + if (Value->getKind() != MCExpr::SymbolRef) + return *S; + const MCSymbolRefExpr *Ref = static_cast(Value); + S = &Ref->getSymbol(); + } + return *S; +} + void MCSymbol::setVariableValue(const MCExpr *Value) { assert(!IsUsed && "Cannot set a variable that has already been used."); assert(Value && "Invalid variable value!"); -- cgit v1.1