[llvm] r191578 - [mips] Define a derived class of PseudoSourceValue that represents a GOT entry
Akira Hatanaka
ahatanaka at mips.com
Fri Sep 27 15:30:36 PDT 2013
Author: ahatanak
Date: Fri Sep 27 17:30:36 2013
New Revision: 191578
URL: http://llvm.org/viewvc/llvm-project?rev=191578&view=rev
Log:
[mips] Define a derived class of PseudoSourceValue that represents a GOT entry
resolved by lazy-binding.
Modified:
llvm/trunk/lib/Target/Mips/MipsMachineFunction.cpp
llvm/trunk/lib/Target/Mips/MipsMachineFunction.h
Modified: llvm/trunk/lib/Target/Mips/MipsMachineFunction.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsMachineFunction.cpp?rev=191578&r1=191577&r2=191578&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsMachineFunction.cpp (original)
+++ llvm/trunk/lib/Target/Mips/MipsMachineFunction.cpp Fri Sep 27 17:30:36 2013
@@ -22,6 +22,53 @@ static cl::opt<bool>
FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
cl::desc("Always use $gp as the global base register."));
+// class MipsCallEntry.
+MipsCallEntry::MipsCallEntry(const StringRef &N) {
+#ifndef NDEBUG
+ Name = N;
+ Val = 0;
+#endif
+}
+
+MipsCallEntry::MipsCallEntry(const GlobalValue *V) {
+#ifndef NDEBUG
+ Val = V;
+#endif
+}
+
+bool MipsCallEntry::isConstant(const MachineFrameInfo *) const {
+ return false;
+}
+
+bool MipsCallEntry::isAliased(const MachineFrameInfo *) const {
+ return false;
+}
+
+bool MipsCallEntry::mayAlias(const MachineFrameInfo *) const {
+ return false;
+}
+
+void MipsCallEntry::printCustom(raw_ostream &O) const {
+ O << "MipsCallEntry: ";
+#ifndef NDEBUG
+ if (Val)
+ O << Val->getName();
+ else
+ O << Name;
+#endif
+}
+
+MipsFunctionInfo::~MipsFunctionInfo() {
+ for (StringMap<const MipsCallEntry *>::iterator
+ I = ExternalCallEntries.begin(), E = ExternalCallEntries.end(); I != E;
+ ++I)
+ delete I->getValue();
+
+ for (ValueMap<const GlobalValue *, const MipsCallEntry *>::iterator
+ I = GlobalCallEntries.begin(), E = GlobalCallEntries.end(); I != E; ++I)
+ delete I->second;
+}
+
bool MipsFunctionInfo::globalBaseRegSet() const {
return GlobalBaseReg;
}
@@ -72,4 +119,26 @@ bool MipsFunctionInfo::isEhDataRegFI(int
|| FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
}
+MachinePointerInfo MipsFunctionInfo::callPtrInfo(const StringRef &Name) {
+ StringMap<const MipsCallEntry *>::const_iterator I;
+ I = ExternalCallEntries.find(Name);
+
+ if (I != ExternalCallEntries.end())
+ return MachinePointerInfo(I->getValue());
+
+ const MipsCallEntry *E = ExternalCallEntries[Name] = new MipsCallEntry(Name);
+ return MachinePointerInfo(E);
+}
+
+MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
+ ValueMap<const GlobalValue *, const MipsCallEntry *>::const_iterator I;
+ I = GlobalCallEntries.find(Val);
+
+ if (I != GlobalCallEntries.end())
+ return MachinePointerInfo(I->second);
+
+ const MipsCallEntry *E = GlobalCallEntries[Val] = new MipsCallEntry(Val);
+ return MachinePointerInfo(E);
+}
+
void MipsFunctionInfo::anchor() { }
Modified: llvm/trunk/lib/Target/Mips/MipsMachineFunction.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsMachineFunction.h?rev=191578&r1=191577&r2=191578&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsMachineFunction.h (original)
+++ llvm/trunk/lib/Target/Mips/MipsMachineFunction.h Fri Sep 27 17:30:36 2013
@@ -15,14 +15,37 @@
#define MIPS_MACHINE_FUNCTION_INFO_H
#include "MipsSubtarget.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/ValueMap.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/IR/GlobalValue.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
#include <utility>
namespace llvm {
+/// \brief A class derived from PseudoSourceValue that represents a GOT entry
+/// resolved by lazy-binding.
+class MipsCallEntry : public PseudoSourceValue {
+public:
+ explicit MipsCallEntry(const StringRef &N);
+ explicit MipsCallEntry(const GlobalValue *V);
+ virtual bool isConstant(const MachineFrameInfo *) const;
+ virtual bool isAliased(const MachineFrameInfo *) const;
+ virtual bool mayAlias(const MachineFrameInfo *) const;
+
+private:
+ virtual void printCustom(raw_ostream &O) const;
+#ifndef NDEBUG
+ std::string Name;
+ const GlobalValue *Val;
+#endif
+};
+
/// MipsFunctionInfo - This class is derived from MachineFunction private
/// Mips target-specific information for each MachineFunction.
class MipsFunctionInfo : public MachineFunctionInfo {
@@ -32,6 +55,8 @@ public:
VarArgsFrameIndex(0), CallsEhReturn(false)
{}
+ ~MipsFunctionInfo();
+
unsigned getSRetReturnReg() const { return SRetReturnReg; }
void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
@@ -59,6 +84,14 @@ public:
int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; }
bool isEhDataRegFI(int FI) const;
+ /// \brief Create a MachinePointerInfo that has a MipsCallEntr object
+ /// representing a GOT entry for an external function.
+ MachinePointerInfo callPtrInfo(const StringRef &Name);
+
+ /// \brief Create a MachinePointerInfo that has a MipsCallEntr object
+ /// representing a GOT entry for a global function.
+ MachinePointerInfo callPtrInfo(const GlobalValue *Val);
+
private:
virtual void anchor();
@@ -92,6 +125,10 @@ private:
/// Frame objects for spilling eh data registers.
int EhDataRegFI[4];
+
+ /// MipsCallEntry maps.
+ StringMap<const MipsCallEntry *> ExternalCallEntries;
+ ValueMap<const GlobalValue *, const MipsCallEntry *> GlobalCallEntries;
};
} // end of namespace llvm
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