[llvm-commits] [llvm] r45817 - in /llvm/trunk/utils/TableGen: CodeGenDAGPatterns.cpp CodeGenTarget.h InstrInfoEmitter.cpp
Chris Lattner
sabre at nondot.org
Wed Jan 9 20:38:57 PST 2008
Author: lattner
Date: Wed Jan 9 22:38:57 2008
New Revision: 45817
URL: http://llvm.org/viewvc/llvm-project?rev=45817&view=rev
Log:
realize that instructions who match intrinsics that read memory read memory.
Also, instructions with any nodes that are SDNPMayLoad also read memory.
Modified:
llvm/trunk/utils/TableGen/CodeGenDAGPatterns.cpp
llvm/trunk/utils/TableGen/CodeGenTarget.h
llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp
Modified: llvm/trunk/utils/TableGen/CodeGenDAGPatterns.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/CodeGenDAGPatterns.cpp?rev=45817&r1=45816&r2=45817&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/CodeGenDAGPatterns.cpp (original)
+++ llvm/trunk/utils/TableGen/CodeGenDAGPatterns.cpp Wed Jan 9 22:38:57 2008
@@ -319,6 +319,8 @@
Properties |= 1 << SDNPOptInFlag;
} else if (PropList[i]->getName() == "SDNPMayStore") {
Properties |= 1 << SDNPMayStore;
+ } else if (PropList[i]->getName() == "SDNPMayLoad") {
+ Properties |= 1 << SDNPMayLoad;
} else {
cerr << "Unknown SD Node property '" << PropList[i]->getName()
<< "' on node '" << R->getName() << "'!\n";
Modified: llvm/trunk/utils/TableGen/CodeGenTarget.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/CodeGenTarget.h?rev=45817&r1=45816&r2=45817&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/CodeGenTarget.h (original)
+++ llvm/trunk/utils/TableGen/CodeGenTarget.h Wed Jan 9 22:38:57 2008
@@ -37,6 +37,7 @@
SDNPOutFlag,
SDNPInFlag,
SDNPOptInFlag,
+ SDNPMayLoad,
SDNPMayStore
};
Modified: llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp?rev=45817&r1=45816&r2=45817&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp Wed Jan 9 22:38:57 2008
@@ -174,12 +174,21 @@
const SDNodeInfo &OpInfo = CDP.getSDNodeInfo(N->getOperator());
// If node writes to memory, it obviously stores to memory.
- if (OpInfo.hasProperty(SDNPMayStore)) {
+ if (OpInfo.hasProperty(SDNPMayStore))
mayStore = true;
- } else if (const CodeGenIntrinsic *IntInfo = N->getIntrinsicInfo(CDP)) {
+
+ // If it reads memory, remember this.
+ if (OpInfo.hasProperty(SDNPMayLoad))
+ mayLoad = true;
+
+ if (const CodeGenIntrinsic *IntInfo = N->getIntrinsicInfo(CDP)) {
// If this is an intrinsic, analyze it.
- if (IntInfo->ModRef >= CodeGenIntrinsic::WriteArgMem)
+ if (IntInfo->ModRef >= CodeGenIntrinsic::WriteArgMem) {
mayStore = true;// Intrinsics that can write to memory are 'mayStore'.
+ }
+
+ if (IntInfo->ModRef >= CodeGenIntrinsic::ReadArgMem)
+ mayLoad = true;// These may also load memory.
}
}
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