It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
new file mode 100644
index 0000000..12b5682
--- /dev/null
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -0,0 +1,245 @@
+//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::viewGraph() -----===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This implements the SelectionDAG::viewGraph method.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Constants.h"
+#include "llvm/Function.h"
+#include "llvm/Assembly/Writer.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/GraphWriter.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Config/config.h"
+#include <fstream>
+#include <sstream>
+using namespace llvm;
+
+namespace llvm {
+ template<>
+ struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
+ static std::string getGraphName(const SelectionDAG *G) {
+ return G->getMachineFunction().getFunction()->getName();
+ }
+
+ static bool renderGraphFromBottomUp() {
+ return true;
+ }
+
+ static bool hasNodeAddressLabel(const SDNode *Node,
+ const SelectionDAG *Graph) {
+ return true;
+ }
+
+ /// If you want to override the dot attributes printed for a particular
+ /// edge, override this method.
+ template<typename EdgeIter>
+ static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
+ SDOperand Op = EI.getNode()->getOperand(EI.getOperand());
+ MVT::ValueType VT = Op.getValueType();
+ if (VT == MVT::Flag)
+ return "color=red,style=bold";
+ else if (VT == MVT::Other)
+ return "color=blue,style=dashed";
+ return "";
+ }
+
+
+ static std::string getNodeLabel(const SDNode *Node,
+ const SelectionDAG *Graph);
+ static std::string getNodeAttributes(const SDNode *N,
+ const SelectionDAG *Graph) {
+#ifndef NDEBUG
+ const std::string &Attrs = Graph->getGraphAttrs(N);
+ if (!Attrs.empty()) {
+ if (Attrs.find("shape=") == std::string::npos)
+ return std::string("shape=Mrecord,") + Attrs;
+ else
+ return Attrs;
+ }
+#endif
+ return "shape=Mrecord";
+ }
+
+ static void addCustomGraphFeatures(SelectionDAG *G,
+ GraphWriter<SelectionDAG*> &GW) {
+ GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
+ if (G->getRoot().Val)
+ GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
+ }
+ };
+}
+
+std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
+ const SelectionDAG *G) {
+ std::string Op = Node->getOperationName(G);
+
+ for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
+ if (Node->getValueType(i) == MVT::Other)
+ Op += ":ch";
+ else
+ Op = Op + ":" + MVT::getValueTypeString(Node->getValueType(i));
+
+ if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
+ Op += ": " + utostr(CSDN->getValue());
+ } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
+ Op += ": " + ftostr(CSDN->getValue());
+ } else if (const GlobalAddressSDNode *GADN =
+ dyn_cast<GlobalAddressSDNode>(Node)) {
+ int offset = GADN->getOffset();
+ Op += ": " + GADN->getGlobal()->getName();
+ if (offset > 0)
+ Op += "+" + itostr(offset);
+ else
+ Op += itostr(offset);
+ } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(Node)) {
+ Op += " " + itostr(FIDN->getIndex());
+ } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(Node)) {
+ Op += " " + itostr(JTDN->getIndex());
+ } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
+ if (CP->isMachineConstantPoolEntry()) {
+ std::ostringstream SS;
+ CP->getMachineCPVal()->print(SS);
+ Op += "<" + SS.str() + ">";
+ } else {
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
+ Op += "<" + ftostr(CFP->getValue()) + ">";
+ else if (ConstantInt *CI = dyn_cast<ConstantInt>(CP->getConstVal()))
+ Op += "<" + utostr(CI->getZExtValue()) + ">";
+ else {
+ std::ostringstream SS;
+ WriteAsOperand(SS, CP->getConstVal(), false);
+ Op += "<" + SS.str() + ">";
+ }
+ }
+ } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(Node)) {
+ Op = "BB: ";
+ const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
+ if (LBB)
+ Op += LBB->getName();
+ //Op += " " + (const void*)BBDN->getBasicBlock();
+ } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
+ if (G && R->getReg() != 0 &&
+ MRegisterInfo::isPhysicalRegister(R->getReg())) {
+ Op = Op + " " + G->getTarget().getRegisterInfo()->getName(R->getReg());
+ } else {
+ Op += " #" + utostr(R->getReg());
+ }
+ } else if (const ExternalSymbolSDNode *ES =
+ dyn_cast<ExternalSymbolSDNode>(Node)) {
+ Op += "'" + std::string(ES->getSymbol()) + "'";
+ } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(Node)) {
+ if (M->getValue())
+ Op += "<" + M->getValue()->getName() + ":" + itostr(M->getOffset()) + ">";
+ else
+ Op += "<null:" + itostr(M->getOffset()) + ">";
+ } else if (const VTSDNode *N = dyn_cast<VTSDNode>(Node)) {
+ Op = Op + " VT=" + MVT::getValueTypeString(N->getVT());
+ } else if (const StringSDNode *N = dyn_cast<StringSDNode>(Node)) {
+ Op = Op + "\"" + N->getValue() + "\"";
+ } else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(Node)) {
+ bool doExt = true;
+ switch (LD->getExtensionType()) {
+ default: doExt = false; break;
+ case ISD::EXTLOAD:
+ Op = Op + "<anyext ";
+ break;
+ case ISD::SEXTLOAD:
+ Op = Op + " <sext ";
+ break;
+ case ISD::ZEXTLOAD:
+ Op = Op + " <zext ";
+ break;
+ }
+ if (doExt)
+ Op = Op + MVT::getValueTypeString(LD->getLoadedVT()) + ">";
+
+ Op += LD->getIndexedModeName(LD->getAddressingMode());
+ } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(Node)) {
+ if (ST->isTruncatingStore())
+ Op = Op + "<trunc " + MVT::getValueTypeString(ST->getStoredVT()) + ">";
+ Op += ST->getIndexedModeName(ST->getAddressingMode());
+ }
+
+ return Op;
+}
+
+
+/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
+/// rendered using 'dot'.
+///
+void SelectionDAG::viewGraph() {
+// This code is only for debugging!
+#ifndef NDEBUG
+ ViewGraph(this, "dag." + getMachineFunction().getFunction()->getName());
+#else
+ cerr << "SelectionDAG::viewGraph is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
+}
+
+
+/// clearGraphAttrs - Clear all previously defined node graph attributes.
+/// Intended to be used from a debugging tool (eg. gdb).
+void SelectionDAG::clearGraphAttrs() {
+#ifndef NDEBUG
+ NodeGraphAttrs.clear();
+#else
+ cerr << "SelectionDAG::clearGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+
+/// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
+///
+void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) {
+#ifndef NDEBUG
+ NodeGraphAttrs[N] = Attrs;
+#else
+ cerr << "SelectionDAG::setGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+
+/// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
+/// Used from getNodeAttributes.
+const std::string SelectionDAG::getGraphAttrs(const SDNode *N) const {
+#ifndef NDEBUG
+ std::map<const SDNode *, std::string>::const_iterator I =
+ NodeGraphAttrs.find(N);
+
+ if (I != NodeGraphAttrs.end())
+ return I->second;
+ else
+ return "";
+#else
+ cerr << "SelectionDAG::getGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+ return std::string("");
+#endif
+}
+
+/// setGraphColor - Convenience for setting node color attribute.
+///
+void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) {
+#ifndef NDEBUG
+ NodeGraphAttrs[N] = std::string("color=") + Color;
+#else
+ cerr << "SelectionDAG::setGraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+