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Work correctly with ICC, Patch contributed by Bjørn Wennberg
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18630 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -629,9 +629,12 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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// If this is freopen, merge the file descriptor passed in with the
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// result.
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if (F->getName() == "freopen")
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Result.mergeWith(getValueDest(**--CS.arg_end()));
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if (F->getName() == "freopen") {
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// ICC doesn't handle getting the iterator, decrementing and
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// dereferencing it in one operation without error. Do it in 2 steps
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CallSite::arg_iterator compit = CS.arg_end();
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Result.mergeWith(getValueDest(**--compit));
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}
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return;
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} else if (F->getName() == "fclose" && CS.arg_end()-CS.arg_begin() ==1){
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// fclose reads and deallocates the memory in an unknown way for the
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@ -665,7 +668,8 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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(F->getName() == "fwrite" || F->getName() == "fread")) {
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// fread writes the first operand, fwrite reads it. They both
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// read/write the FILE descriptor, and merges the FILE type.
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DSNodeHandle H = getValueDest(**--CS.arg_end());
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CallSite::arg_iterator compit = CS.arg_end();
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DSNodeHandle H = getValueDest(**--compit);
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if (DSNode *N = H.getNode()) {
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N->setReadMarker()->setModifiedMarker();
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const Type *ArgTy = F->getFunctionType()->getParamType(3);
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@ -706,10 +710,12 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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F->getName() == "_IO_putc") {
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// These functions read and write the memory for the file descriptor,
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// which is passes as the last argument.
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DSNodeHandle H = getValueDest(**--CS.arg_end());
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CallSite::arg_iterator compit = CS.arg_end();
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DSNodeHandle H = getValueDest(**--compit);
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if (DSNode *N = H.getNode()) {
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N->setReadMarker()->setModifiedMarker();
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const Type *ArgTy = *--F->getFunctionType()->param_end();
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FunctionType::param_iterator compit2 = F->getFunctionType()->param_end();
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const Type *ArgTy = *--compit2;
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if (const PointerType *PTy = dyn_cast<PointerType>(ArgTy))
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N->mergeTypeInfo(PTy->getElementType(), H.getOffset());
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}
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@ -727,7 +733,8 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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// and read/write all other arguments.
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DSNodeHandle H = getValueDest(**CS.arg_begin());
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if (DSNode *N = H.getNode()) {
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const Type *ArgTy = *--F->getFunctionType()->param_end();
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FunctionType::param_iterator compit2 = F->getFunctionType()->param_end();
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const Type *ArgTy = *--compit2;
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if (const PointerType *PTy = dyn_cast<PointerType>(ArgTy))
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N->mergeTypeInfo(PTy->getElementType(), H.getOffset());
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}
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@ -897,7 +904,8 @@ void GraphBuilder::visitCallSite(CallSite CS) {
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return;
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} else if (F->getName() == "modf" && CS.arg_end()-CS.arg_begin() == 2) {
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// This writes its second argument, and forces it to double.
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DSNodeHandle H = getValueDest(**--CS.arg_end());
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CallSite::arg_iterator compit = CS.arg_end();
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DSNodeHandle H = getValueDest(**--compit);
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if (DSNode *N = H.getNode()) {
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N->setModifiedMarker();
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N->mergeTypeInfo(Type::DoubleTy, H.getOffset());
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