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Add a bunch more functions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11847 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-25 23:06:40 +00:00
parent 153f24070c
commit 52fc8d7ec9
1 changed files with 55 additions and 8 deletions
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63
lib/Analysis/DataStructure/Local.cpp
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@ -490,7 +490,11 @@ void GraphBuilder::visitCallSite(CallSite CS) {
F->getName() == "strcmp" || F->getName() == "strncmp" ||
F->getName() == "execl" || F->getName() == "execlp" ||
F->getName() == "execle" || F->getName() == "execv" ||
F->getName() == "execvp" || F->getName() == "chmod") {
F->getName() == "execvp" || F->getName() == "chmod" ||
F->getName() == "puts" || F->getName() == "write" ||
F->getName() == "open" || F->getName() == "create" ||
F->getName() == "truncate" || F->getName() == "chdir" ||
F->getName() == "mkdir" || F->getName() == "rmdir") {
// These functions read all of their pointer operands.
for (CallSite::arg_iterator AI = CS.arg_begin(), E = CS.arg_end();
AI != E; ++AI) {
@ -499,6 +503,16 @@ void GraphBuilder::visitCallSite(CallSite CS) {
N->setReadMarker();
}
return;
} else if (F->getName() == "read" || F->getName() == "pipe" ||
F->getName() == "wait") {
// These functions write all of their pointer operands.
for (CallSite::arg_iterator AI = CS.arg_begin(), E = CS.arg_end();
AI != E; ++AI) {
if (isPointerType((*AI)->getType()))
if (DSNode *N = getValueDest(**AI).getNode())
N->setModifiedMarker();
}
return;
} else if (F->getName() == "stat" || F->getName() == "fstat" ||
F->getName() == "lstat") {
// These functions read their first operand if its a pointer.
@ -516,8 +530,6 @@ void GraphBuilder::visitCallSite(CallSite CS) {
if (const PointerType *PTy = dyn_cast<PointerType>(StatTy))
N->mergeTypeInfo(PTy->getElementType(), StatBuf.getOffset());
}
return;
} else if (F->getName() == "fopen" || F->getName() == "fdopen") {
// fopen reads the mode argument strings.
@ -554,7 +566,8 @@ void GraphBuilder::visitCallSite(CallSite CS) {
} else if (CS.arg_end()-CS.arg_begin() == 1 &&
(F->getName() == "fflush" || F->getName() == "feof" ||
F->getName() == "fileno" || F->getName() == "clearerr" ||
F->getName() == "rewind" || F->getName() == "ftell")) {
F->getName() == "rewind" || F->getName() == "ftell" ||
F->getName() == "ferror")) {
// fflush reads and writes the memory for the file descriptor. It
// merges the FILE type into the descriptor.
DSNodeHandle H = getValueDest(**CS.arg_begin());
@ -605,15 +618,42 @@ void GraphBuilder::visitCallSite(CallSite CS) {
N->mergeTypeInfo(PTy->getElementType(), H.getOffset());
}
return;
} else if (F->getName() == "ungetc" &&CS.arg_end()-CS.arg_begin() == 2){
// ungetc reads and writes the memory for the file descriptor.
} else if (F->getName() == "ungetc" || F->getName() == "fputc" ||
F->getName() == "fputs" || F->getName() == "putc" ||
F->getName() == "ftell" || F->getName() == "rewind") {
// These functions read and write the memory for the file descriptor.
DSNodeHandle H = getValueDest(**--CS.arg_end());
if (DSNode *N = H.getNode()) {
N->setReadMarker()->setModifiedMarker();
const Type *ArgTy = F->getFunctionType()->getParamType(1);
const Type *ArgTy = *--F->getFunctionType()->param_end();
if (const PointerType *PTy = dyn_cast<PointerType>(ArgTy))
N->mergeTypeInfo(PTy->getElementType(), H.getOffset());
}
// Any pointer arguments are read.
for (CallSite::arg_iterator AI = CS.arg_begin(), E = CS.arg_end();
AI != E; ++AI)
if (isPointerType((*AI)->getType()))
if (DSNode *N = getValueDest(**AI).getNode())
N->setReadMarker();
return;
} else if (F->getName() == "fseek" || F->getName() == "fgetpos" ||
F->getName() == "fsetpos") {
// These functions read and write the memory for the file descriptor,
// and read/write all other arguments.
DSNodeHandle H = getValueDest(**CS.arg_begin());
if (DSNode *N = H.getNode()) {
const Type *ArgTy = *--F->getFunctionType()->param_end();
if (const PointerType *PTy = dyn_cast<PointerType>(ArgTy))
N->mergeTypeInfo(PTy->getElementType(), H.getOffset());
}
// Any pointer arguments are read.
for (CallSite::arg_iterator AI = CS.arg_begin(), E = CS.arg_end();
AI != E; ++AI)
if (isPointerType((*AI)->getType()))
if (DSNode *N = getValueDest(**AI).getNode())
N->setReadMarker()->setModifiedMarker();
return;
} else if (F->getName() == "printf" || F->getName() == "fprintf" ||
F->getName() == "sprintf") {
@ -708,7 +748,14 @@ void GraphBuilder::visitCallSite(CallSite CS) {
N->setReadMarker();
H.mergeWith(getValueDest(*CS.getInstruction())); // Returns buffer
return;
} else if (F->getName() == "modf" && CS.arg_end()-CS.arg_begin() == 2) {
// This writes its second argument, and forces it to double.
DSNodeHandle H = getValueDest(**--CS.arg_end());
if (DSNode *N = H.getNode()) {
N->setModifiedMarker();
N->mergeTypeInfo(Type::DoubleTy, H.getOffset());
}
return;
} else {
// Unknown function, warn if it returns a pointer type or takes a
// pointer argument.