Proper handle case, when aliasee is external weak symbol referenced only by alias itself.
Also, fix a case, when target doesn't have weak symbols supported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41746 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index 9387847..fa6f569 100644
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -132,13 +132,11 @@
I!=E; ++I) {
std::string Name = Mang->getValueName(I);
std::string Target;
+
+ const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
+ Target = Mang->getValueName(GV);
- if (const GlobalValue *GV = I->getAliasedGlobal())
- Target = Mang->getValueName(GV);
- else
- assert(0 && "Unsupported aliasee");
-
- if (I->hasExternalLinkage())
+ if (I->hasExternalLinkage() || !TAI->getWeakRefDirective())
O << "\t.globl\t" << Name << "\n";
else if (I->hasWeakLinkage())
O << TAI->getWeakRefDirective() << Name << "\n";
@@ -146,6 +144,15 @@
assert(0 && "Invalid alias linkage");
O << TAI->getSetDirective() << Name << ", " << Target << "\n";
+
+ // If the aliasee has external weak linkage it can be referenced only by
+ // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
+ // weak reference in such case.
+ if (GV->hasExternalWeakLinkage())
+ if (TAI->getWeakRefDirective())
+ O << TAI->getWeakRefDirective() << Target << "\n";
+ else
+ O << "\t.globl\t" << Target << "\n";
}
}