[llvm-commits] [llvm] r94623 - in /llvm/trunk/lib: CodeGen/AsmPrinter/AsmPrinter.cpp MC/MCAsmInfoCOFF.cpp

[Chris Lattner]

Author: lattner
Date: Tue Jan 26 17:51:52 2010
New Revision: 94623

URL: http://llvm.org/viewvc/llvm-project?rev=94623&view=rev
Log:
use EmitLinkage for functions as well as globals.  One output
change is that we now use ".linkonce discard" for global variables
instead of ".linkonce samesize".  These should be the same, just less
strict.  If anyone is interested in mcizing MCSection for COFF targets,
this should be easy to fix.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    llvm/trunk/lib/MC/MCAsmInfoCOFF.cpp

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp?rev=94623&r1=94622&r2=94623&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp Tue Jan 26 17:51:52 2010
@@ -169,7 +169,9 @@
       // FIXME: linkonce should be a section attribute, handled by COFF Section
       // assignment.
       // http://sourceware.org/binutils/docs-2.20/as/Linkonce.html#Linkonce
-      // .linkonce same_size
+      // .linkonce discard
+      // FIXME: It would be nice to use .linkonce samesize for non-common
+      // globals.
       O << LinkOnce;
     } else {
       // .weak _foo
@@ -300,38 +302,9 @@
   OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
   printVisibility(CurrentFnSym, F->getVisibility());
 
-  switch (F->getLinkage()) {
-  default: llvm_unreachable("Unknown linkage type!");
-  case Function::InternalLinkage:  // Symbols default to internal.
-  case Function::PrivateLinkage:
-    break;
-  case Function::DLLExportLinkage:
-  case Function::ExternalLinkage:
-    OutStreamer.EmitSymbolAttribute(CurrentFnSym, MCSA_Global);
-    break;
-  case Function::LinkerPrivateLinkage:
-  case Function::LinkOnceAnyLinkage:
-  case Function::LinkOnceODRLinkage:
-  case Function::WeakAnyLinkage:
-  case Function::WeakODRLinkage:
-    if (MAI->getWeakDefDirective() != 0) {
-      OutStreamer.EmitSymbolAttribute(CurrentFnSym, MCSA_Global);
-      O << MAI->getWeakDefDirective() << *CurrentFnSym << '\n';
-    } else if (MAI->getLinkOnceDirective() != 0) {
-      OutStreamer.EmitSymbolAttribute(CurrentFnSym, MCSA_Global);
-      // FIXME: linkonce should be a section attribute, handled by COFF Section
-      // assignment.
-      // http://sourceware.org/binutils/docs-2.20/as/Linkonce.html#Linkonce
-      O << "\t.linkonce discard\n";
-    } else {
-      O << "\t.weak\t" << *CurrentFnSym << '\n';
-    }
-    break;
-  }
-
+  EmitLinkage(F->getLinkage(), CurrentFnSym);
   EmitAlignment(MF->getAlignment(), F);
 
-
   if (MAI->hasDotTypeDotSizeDirective())
     OutStreamer.EmitSymbolAttribute(CurrentFnSym, MCSA_ELF_TypeFunction);
 

Modified: llvm/trunk/lib/MC/MCAsmInfoCOFF.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCAsmInfoCOFF.cpp?rev=94623&r1=94622&r2=94623&view=diff

==============================================================================
--- llvm/trunk/lib/MC/MCAsmInfoCOFF.cpp (original)
+++ llvm/trunk/lib/MC/MCAsmInfoCOFF.cpp Tue Jan 26 17:51:52 2010
@@ -24,7 +24,7 @@
   HasSingleParameterDotFile = false;
   PrivateGlobalPrefix = "L";  // Prefix for private global symbols
   WeakRefDirective = "\t.weak\t";
-  LinkOnceDirective = "\t.linkonce same_size\n";
+  LinkOnceDirective = "\t.linkonce discard\n";
   
   // Doesn't support visibility:
   HiddenVisibilityAttr = ProtectedVisibilityAttr = MCSA_Invalid;