Make FixedStackPseudoSourceValue a first-class PseudoSourceValue by
making it visible to clients and adding LLVM-style cast capability.
This will be used by AsmPrinter to determine when to emit spill comments
for an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87019 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/PseudoSourceValue.h b/include/llvm/CodeGen/PseudoSourceValue.h
index 26392f5..1a1dde9 100644
--- a/include/llvm/CodeGen/PseudoSourceValue.h
+++ b/include/llvm/CodeGen/PseudoSourceValue.h
@@ -15,6 +15,7 @@
#define LLVM_CODEGEN_PSEUDOSOURCEVALUE_H
#include "llvm/Value.h"
+#include "llvm/Support/raw_ostream.h"
namespace llvm {
class MachineFrameInfo;
@@ -32,7 +33,7 @@
virtual void printCustom(raw_ostream &O) const;
public:
- PseudoSourceValue();
+ PseudoSourceValue(enum ValueTy Subclass = PseudoSourceValueVal);
/// isConstant - Test whether the memory pointed to by this
/// PseudoSourceValue has a constant value.
@@ -76,6 +77,38 @@
/// constant, this doesn't need to identify a specific jump table.
static const PseudoSourceValue *getJumpTable();
};
+
+ /// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
+ /// for holding FixedStack values, which must include a frame
+ /// index.
+ class FixedStackPseudoSourceValue : public PseudoSourceValue {
+ const int FI;
+ public:
+ explicit FixedStackPseudoSourceValue(int fi) :
+ PseudoSourceValue(FixedStackPseudoSourceValueVal), FI(fi) {}
+
+ /// classof - Methods for support type inquiry through isa, cast, and
+ /// dyn_cast:
+ ///
+ static inline bool classof(const FixedStackPseudoSourceValue *) {
+ return true;
+ }
+ static inline bool classof(const Value *V) {
+ return V->getValueID() == FixedStackPseudoSourceValueVal;
+ }
+
+ virtual bool isConstant(const MachineFrameInfo *MFI) const;
+
+ virtual bool isAliased(const MachineFrameInfo *MFI) const;
+
+ virtual bool mayAlias(const MachineFrameInfo *) const;
+
+ virtual void printCustom(raw_ostream &OS) const {
+ OS << "FixedStack" << FI;
+ }
+
+ int getFrameIndex(void) const { return FI; }
+ };
} // End llvm namespace
#endif
diff --git a/lib/CodeGen/PseudoSourceValue.cpp b/lib/CodeGen/PseudoSourceValue.cpp
index 5507646..e95f017 100644
--- a/lib/CodeGen/PseudoSourceValue.cpp
+++ b/lib/CodeGen/PseudoSourceValue.cpp
@@ -43,35 +43,14 @@
// Eventually these should be uniqued on LLVMContext rather than in a managed
// static. For now, we can safely use the global context for the time being to
// squeak by.
-PseudoSourceValue::PseudoSourceValue() :
+PseudoSourceValue::PseudoSourceValue(enum ValueTy Subclass) :
Value(Type::getInt8PtrTy(getGlobalContext()),
- PseudoSourceValueVal) {}
+ Subclass) {}
void PseudoSourceValue::printCustom(raw_ostream &O) const {
O << PSVNames[this - *PSVs];
}
-namespace {
- /// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
- /// for holding FixedStack values, which must include a frame
- /// index.
- class FixedStackPseudoSourceValue : public PseudoSourceValue {
- const int FI;
- public:
- explicit FixedStackPseudoSourceValue(int fi) : FI(fi) {}
-
- virtual bool isConstant(const MachineFrameInfo *MFI) const;
-
- virtual bool isAliased(const MachineFrameInfo *MFI) const;
-
- virtual bool mayAlias(const MachineFrameInfo *) const;
-
- virtual void printCustom(raw_ostream &OS) const {
- OS << "FixedStack" << FI;
- }
- };
-}
-
static ManagedStatic<std::map<int, const PseudoSourceValue *> > FSValues;
const PseudoSourceValue *PseudoSourceValue::getFixedStack(int FI) {