[llvm-commits] [llvm] r52133 - /llvm/trunk/lib/Linker/LinkModules.cpp
Chris Lattner
sabre at nondot.org
Mon Jun 9 00:25:28 PDT 2008
Author: lattner
Date: Mon Jun 9 02:25:28 2008
New Revision: 52133
URL: http://llvm.org/viewvc/llvm-project?rev=52133&view=rev
Log:
simplify function visibility handling.
Modified:
llvm/trunk/lib/Linker/LinkModules.cpp
Modified: llvm/trunk/lib/Linker/LinkModules.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Linker/LinkModules.cpp?rev=52133&r1=52132&r2=52133&view=diff
==============================================================================
--- llvm/trunk/lib/Linker/LinkModules.cpp (original)
+++ llvm/trunk/lib/Linker/LinkModules.cpp Mon Jun 9 02:25:28 2008
@@ -827,19 +827,22 @@
&Dest->getTypeSymbolTable(), "");
}
+ if (DF && DF->hasInternalLinkage())
+ DF = NULL;
+
// Check visibility
- if (DF && !DF->hasInternalLinkage() &&
- SF->getVisibility() != DF->getVisibility()) {
+ if (DF && SF->getVisibility() != DF->getVisibility()) {
// If one is a prototype, ignore its visibility. Prototypes are always
// overridden by the definition.
if (!SF->isDeclaration() && !DF->isDeclaration())
return Error(Err, "Linking functions named '" + SF->getName() +
"': symbols have different visibilities!");
+
+ // Otherwise, replace the visibility of DF if DF is a prototype.
+ if (DF->isDeclaration())
+ DF->setVisibility(SF->getVisibility());
}
- if (DF && DF->hasInternalLinkage())
- DF = NULL;
-
if (DF && DF->getType() != SF->getType()) {
if (DF->isDeclaration() && !SF->isDeclaration()) {
// We have a definition of the same name but different type in the
@@ -911,8 +914,6 @@
// Link the external functions, update linkage qualifiers
ValueMap.insert(std::make_pair(SF, DF));
DF->setLinkage(SF->getLinkage());
- // Visibility of prototype is overridden by vis of definition.
- DF->setVisibility(SF->getVisibility());
} else if (SF->hasWeakLinkage() || SF->hasLinkOnceLinkage() ||
SF->hasCommonLinkage()) {
// At this point we know that DF has LinkOnce, Weak, or External* linkage.
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