[cfe-commits] r66038 - in /cfe/trunk: lib/CodeGen/CodeGenModule.cpp test/CodeGen/2008-07-31-asm-labels.c

[Daniel Dunbar]

Author: ddunbar
Date: Wed Mar  4 11:31:19 2009
New Revision: 66038

URL: http://llvm.org/viewvc/llvm-project?rev=66038&view=rev
Log:
Support "asm" renaming of external symbols.
 - PR3698.

Modified:
    cfe/trunk/lib/CodeGen/CodeGenModule.cpp
    cfe/trunk/test/CodeGen/2008-07-31-asm-labels.c

Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=66038&r1=66037&r2=66038&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Wed Mar  4 11:31:19 2009
@@ -605,6 +605,12 @@
 
     if (D->getAttr<WeakAttr>())
       GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage);
+
+    if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
+      // Prefaced with special LLVM marker to indicate that the name
+      // should not be munged.
+      GV->setName("\01" + ALA->getLabel());
+    }  
   }
   
   // Make sure the result is of the correct type.

Modified: cfe/trunk/test/CodeGen/2008-07-31-asm-labels.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/2008-07-31-asm-labels.c?rev=66038&r1=66037&r2=66038&view=diff

==============================================================================
--- cfe/trunk/test/CodeGen/2008-07-31-asm-labels.c (original)
+++ cfe/trunk/test/CodeGen/2008-07-31-asm-labels.c Wed Mar  4 11:31:19 2009
@@ -1,6 +1,8 @@
 // RUN: clang -emit-llvm -o %t %s &&
 // RUN: grep "@pipe()" %t | count 0 &&
 // RUN: grep '_thisIsNotAPipe' %t | count 3 &&
+// RUN: grep 'g0' %t | count 0 &&
+// RUN: grep '_renamed' %t | count 2 &&
 // RUN: clang -DUSE_DEF -emit-llvm -o %t %s &&
 // RUN: grep "@pipe()" %t | count 0 &&
 // RUN: grep '_thisIsNotAPipe' %t | count 3
@@ -23,3 +25,9 @@
   int x = 10;
 }
 #endif
+
+// PR3698
+extern int g0 asm("_renamed");
+int f2() {
+  return g0;
+}