#ifndef B3MemoryValue_h
#define B3MemoryValue_h
#if ENABLE(B3_JIT)
#include "B3HeapRange.h"
#include "B3Value.h"
namespace JSC { namespace B3 {
class JS_EXPORT_PRIVATE MemoryValue : public Value {
public:
static bool accepts(Opcode opcode)
{
switch (opcode) {
case Load8Z:
case Load8S:
case Load16Z:
case Load16S:
case Load:
case Store8:
case Store16:
case Store:
return true;
default:
return false;
}
}
static bool isStore(Opcode opcode)
{
switch (opcode) {
case Store8:
case Store16:
case Store:
return true;
default:
return false;
}
}
static bool isLoad(Opcode opcode)
{
return accepts(opcode) && !isStore(opcode);
}
~MemoryValue();
int32_t offset() const { return m_offset; }
void setOffset(int32_t offset) { m_offset = offset; }
const HeapRange& range() const { return m_range; }
void setRange(const HeapRange& range) { m_range = range; }
bool isStore() const { return type() == Void; }
bool isLoad() const { return type() != Void; }
size_t accessByteSize() const;
protected:
void dumpMeta(CommaPrinter& comma, PrintStream&) const override;
Value* cloneImpl() const override;
private:
friend class Procedure;
MemoryValue(Opcode opcode, Type type, Origin origin, Value* pointer, int32_t offset = 0)
: Value(CheckedOpcode, opcode, type, origin, pointer)
, m_offset(offset)
, m_range(HeapRange::top())
{
if (!ASSERT_DISABLED) {
switch (opcode) {
case Load:
break;
case Load8Z:
case Load8S:
case Load16Z:
case Load16S:
ASSERT(type == Int32);
break;
case Store8:
case Store16:
case Store:
ASSERT(type == Void);
break;
default:
ASSERT_NOT_REACHED();
}
}
}
MemoryValue(Opcode opcode, Origin origin, Value* pointer, int32_t offset = 0)
: MemoryValue(opcode, Int32, origin, pointer, offset)
{
}
MemoryValue(Opcode opcode, Origin origin, Value* value, Value* pointer, int32_t offset = 0)
: Value(CheckedOpcode, opcode, Void, origin, value, pointer)
, m_offset(offset)
, m_range(HeapRange::top())
{
if (!ASSERT_DISABLED) {
switch (opcode) {
case Store8:
case Store16:
case Store:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
}
int32_t m_offset { 0 };
HeapRange m_range;
};
} }
#endif // ENABLE(B3_JIT)
#endif // B3MemoryValue_h