[llvm] r224827 - CodeGen: Allow aliases to be overridden by variables

[David Majnemer]

Author: majnemer
Date: Wed Dec 24 16:44:29 2014
New Revision: 224827

URL: http://llvm.org/viewvc/llvm-project?rev=224827&view=rev
Log:
CodeGen: Allow aliases to be overridden by variables

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    llvm/trunk/test/CodeGen/X86/pr22019.ll

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp?rev=224827&r1=224826&r2=224827&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp Wed Dec 24 16:44:29 2014
@@ -337,6 +337,8 @@ void AsmPrinter::EmitGlobalVariable(cons
   if (!GV->hasInitializer())   // External globals require no extra code.
     return;
 
+  GVSym->redefineIfPossible();
+
   if (MAI->hasDotTypeDotSizeDirective())
     OutStreamer.EmitSymbolAttribute(GVSym, MCSA_ELF_TypeObject);
 

Modified: llvm/trunk/test/CodeGen/X86/pr22019.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/pr22019.ll?rev=224827&r1=224826&r2=224827&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/pr22019.ll (original)
+++ llvm/trunk/test/CodeGen/X86/pr22019.ll Wed Dec 24 16:44:29 2014
@@ -3,10 +3,21 @@ target datalayout = "e-m:e-i64:64-f80:12
 target triple = "x86_64-unknown-linux-gnu"
 
 module asm "pselect = __pselect"
+module asm "var = __var"
+module asm "alias = __alias"
 ; CHECK: pselect = __pselect
+; CHECK: var = __var
+; CHECK: alias = __alias
 
 ; CHECK: pselect:
 ; CHECK: retq
 define void @pselect() {
   ret void
 }
+
+; CHECK: var:
+; CHECK: .long 0
+ at var = global i32 0
+
+; CHECK: alias = var
+ at alias = alias i32* @var