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memset and bcopy and now unified by the llvm.memset intrinsic

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11503 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-02-16 18:37:40 +00:00
parent e0f636a068
commit eee33b2691
1 changed files with 5 additions and 14 deletions
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19
lib/Analysis/DataStructure/Local.cpp
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@@ -468,6 +468,11 @@ void GraphBuilder::visitCallSite(CallSite CS) {
N->setModifiedMarker()->setReadMarker(); N->setModifiedMarker()->setReadMarker();
return; return;
} }
case Intrinsic::memset:
// Mark the memory modified.
if (DSNode *N = getValueDest(**CS.arg_begin()).getNode())
N->setModifiedMarker();
return;
default: default:
if (F->getName() == "calloc") { if (F->getName() == "calloc") {
setDestTo(*CS.getInstruction(), setDestTo(*CS.getInstruction(),
@@ -479,20 +484,6 @@ void GraphBuilder::visitCallSite(CallSite CS) {
if (DSNode *N = RetNH.getNode()) if (DSNode *N = RetNH.getNode())
N->setHeapNodeMarker()->setModifiedMarker()->setReadMarker(); N->setHeapNodeMarker()->setModifiedMarker()->setReadMarker();
return; return;
} else if (F->getName() == "memset") {
// Merge the first argument with the return value, and mark the memory
// modified.
DSNodeHandle RetNH = getValueDest(*CS.getInstruction());
RetNH.mergeWith(getValueDest(**CS.arg_begin()));
if (DSNode *N = RetNH.getNode())
N->setModifiedMarker();
return;
} else if (F->getName() == "bzero") {
// Mark the memory modified.
DSNodeHandle H = getValueDest(**CS.arg_begin());
if (DSNode *N = H.getNode())
N->setModifiedMarker();
return;
} else if (F->getName() == "fopen" && CS.arg_end()-CS.arg_begin() == 2){ } else if (F->getName() == "fopen" && CS.arg_end()-CS.arg_begin() == 2){
// fopen reads the mode argument strings. // fopen reads the mode argument strings.
CallSite::arg_iterator AI = CS.arg_begin(); CallSite::arg_iterator AI = CS.arg_begin();