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Fix PR62, and llvm/test/Regression/CBackend/2003-10-28-CastToPtrToStruct.ll

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ConstantExpr's can use unrelated types, make sure to scan them.

llvm-svn: 9569
This commit is contained in:
Chris Lattner 2003-10-28 23:09:45 +00:00
parent 1139e335a5
commit 305fcb1536
1 changed files with 20 additions and 5 deletions
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25
lib/Analysis/IPA/FindUsedTypes.cpp
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@ -12,10 +12,11 @@
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/FindUsedTypes.h"
#include "llvm/Assembly/CachedWriter.h"
#include "llvm/SymbolTable.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/SymbolTable.h"
#include "llvm/Assembly/CachedWriter.h"
#include "llvm/Support/InstIterator.h"
static RegisterAnalysis<FindUsedTypes>
@ -50,6 +51,18 @@ void FindUsedTypes::IncorporateSymbolTable(const SymbolTable &ST) {
IncorporateType(cast<Type>(I->second));
}
void FindUsedTypes::IncorporateValue(const Value *V) {
IncorporateType(V->getType());
// If this is a constant, it could be using other types...
if (const Constant *C = dyn_cast<Constant>(V)) {
for (User::const_op_iterator OI = C->op_begin(), OE = C->op_end();
OI != OE; ++OI)
IncorporateValue(*OI);
}
}
// run - This incorporates all types used by the specified module
//
bool FindUsedTypes::run(Module &m) {
@ -58,8 +71,11 @@ bool FindUsedTypes::run(Module &m) {
IncorporateSymbolTable(m.getSymbolTable());
// Loop over global variables, incorporating their types
for (Module::const_giterator I = m.gbegin(), E = m.gend(); I != E; ++I)
for (Module::const_giterator I = m.gbegin(), E = m.gend(); I != E; ++I) {
IncorporateType(I->getType());
if (I->hasInitializer())
IncorporateValue(I->getInitializer());
}
for (Module::iterator MI = m.begin(), ME = m.end(); MI != ME; ++MI) {
IncorporateType(MI->getType());
@ -77,8 +93,7 @@ bool FindUsedTypes::run(Module &m) {
IncorporateType(Ty); // Incorporate the type of the instruction
for (User::const_op_iterator OI = I->op_begin(), OE = I->op_end();
OI != OE; ++OI)
if ((*OI)->getType() != Ty) // Avoid set lookup in common case
IncorporateType((*OI)->getType());// Insert inst operand types as well
IncorporateValue(*OI); // Insert inst operand types as well
}
}