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fix crashes when we only have a prototype for main. 

llvm-svn: 20627
This commit is contained in:
Chris Lattner 2005-03-15 22:10:04 +00:00
parent dadf4b369e
commit 21a79edb27
3 changed files with 3 additions and 3 deletions
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2
llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp
View File

@ -85,7 +85,7 @@ bool BUDataStructures::runOnModule(Module &M) {
// Merge the globals variables (not the calls) from the globals graph back
// into the main function's graph so that the main function contains all of
// the information about global pools and GV usage in the program.
if (MainFunc) {
if (MainFunc && !MainFunc->isExternal()) {
DSGraph &MainGraph = getOrCreateGraph(MainFunc);
const DSGraph &GG = *MainGraph.getGlobalsGraph();
ReachabilityCloner RC(MainGraph, GG,

2
llvm/lib/Analysis/DataStructure/CompleteBottomUp.cpp
View File

@ -94,7 +94,7 @@ bool CompleteBUDataStructures::runOnModule(Module &M) {
// Merge the globals variables (not the calls) from the globals graph back
// into the main function's graph so that the main function contains all of
// the information about global pools and GV usage in the program.
if (MainFunc) {
if (MainFunc && !MainFunc->isExternal()) {
DSGraph &MainGraph = getOrCreateGraph(*MainFunc);
const DSGraph &GG = *MainGraph.getGlobalsGraph();
ReachabilityCloner RC(MainGraph, GG,

2
llvm/lib/Analysis/DataStructure/EquivClassGraphs.cpp
View File

@ -106,7 +106,7 @@ bool EquivClassGraphs::runOnModule(Module &M) {
// Merge the globals variables (not the calls) from the globals graph back
// into the main function's graph so that the main function contains all of
// the information about global pools and GV usage in the program.
if (MainFunc) {
if (MainFunc && !MainFunc->isExternal()) {
DSGraph &MainGraph = getOrCreateGraph(*MainFunc);
const DSGraph &GG = *MainGraph.getGlobalsGraph();
ReachabilityCloner RC(MainGraph, GG,