Make AliasedSymbol able to handle MCTargetExpr. They can get here if
a weakref is used with a VariantKind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118798 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index f84164d..93ea77a 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -470,10 +470,23 @@
const MCSymbol *S = &Symbol;
while (S->isVariable()) {
const MCExpr *Value = S->getVariableValue();
- if (Value->getKind() != MCExpr::SymbolRef)
+ MCExpr::ExprKind Kind = Value->getKind();
+ switch (Kind) {
+ case MCExpr::SymbolRef: {
+ const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
+ S = &Ref->getSymbol();
+ break;
+ }
+ case MCExpr::Target: {
+ const MCTargetExpr *TExp = static_cast<const MCTargetExpr*>(Value);
+ MCValue Res;
+ TExp->EvaluateAsRelocatableImpl(Res, NULL);
+ S = &Res.getSymA()->getSymbol();
+ break;
+ }
+ default:
return *S;
- const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
- S = &Ref->getSymbol();
+ }
}
return *S;
}
diff --git a/test/MC/ELF/weakref-plt.s b/test/MC/ELF/weakref-plt.s
new file mode 100644
index 0000000..26ba3f6
--- /dev/null
+++ b/test/MC/ELF/weakref-plt.s
@@ -0,0 +1,8 @@
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump | FileCheck %s
+
+ .weakref bar,foo
+ call bar@PLT
+
+// CHECK: # Symbol 0x00000005
+// CHECK-NEXT: (('st_name', 0x00000001) # 'foo'
+// CHECK-NEXT: ('st_bind', 0x00000002)