From: Gabor Greif <ggreif@gmail.com>
Date: Wed, 4 Aug 2010 10:00:52 +0000 (+0000)
Subject: by Alexander Herz:
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ac27ec0f5b592a5e8a11646dab6bcd8921685208;p=oota-llvm.git

by Alexander Herz:

"The CWriter::GetValueName() method does not check if a value as an alias
and emits the alias name which will never be defined in the output .c
file (so the output file fails to compile). This can happen if you have
multiple inheritance with several destructors defined by clang (...D0Ev,
...D1Ev, ...D2Ev)."

-- applied with minor tweaks. Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110194 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index e8d8474b5be..3b4d0a604cf 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1300,6 +1300,13 @@ void CWriter::printConstantWithCast(Constant* CPV, unsigned Opcode) {
 }
 
 std::string CWriter::GetValueName(const Value *Operand) {
+
+  // Resolve potential alias.
+  if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(Operand)) {
+    if (const Value *V = GA->resolveAliasedGlobal(false))
+      Operand = V;
+  }
+
   // Mangle globals with the standard mangler interface for LLC compatibility.
   if (const GlobalValue *GV = dyn_cast<GlobalValue>(Operand)) {
     SmallString<128> Str;