//===-- X86InstrBuilder.h - Functions to aid building x86 insts -*- C++ -*-===//
-//
+//
// 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 file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This file exposes functions that may be used with BuildMI from the
#ifndef X86INSTRBUILDER_H
#define X86INSTRBUILDER_H
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
namespace llvm {
/// with BP or SP and Disp being offsetted accordingly. The displacement may
/// also include the offset of a global value.
struct X86AddressMode {
- enum {
- RegBase,
- FrameIndexBase,
- } BaseType;
-
- union {
- unsigned Reg;
- int FrameIndex;
- } Base;
-
- unsigned Scale;
- unsigned IndexReg;
- unsigned Disp;
- GlobalValue *GV;
-
- X86AddressMode() : BaseType(RegBase), Scale(1), IndexReg(0), Disp(0),
- GV(NULL) {
- Base.Reg = 0;
- }
+ enum {
+ RegBase,
+ FrameIndexBase
+ } BaseType;
+
+ union {
+ unsigned Reg;
+ int FrameIndex;
+ } Base;
+
+ unsigned Scale;
+ unsigned IndexReg;
+ unsigned Disp;
+ GlobalValue *GV;
+
+ X86AddressMode() : BaseType(RegBase), Scale(1), IndexReg(0), Disp(0), GV(0) {
+ Base.Reg = 0;
+ }
};
/// addDirectMem - This function is used to add a direct memory reference to the
unsigned Reg) {
// Because memory references are always represented with four
// values, this adds: Reg, [1, NoReg, 0] to the instruction.
- return MIB.addReg(Reg).addZImm(1).addReg(0).addSImm(0);
+ return MIB.addReg(Reg).addImm(1).addReg(0).addImm(0);
}
/// displacement. An example is: DWORD PTR [EAX + 4].
///
inline const MachineInstrBuilder &addRegOffset(const MachineInstrBuilder &MIB,
- unsigned Reg, int Offset) {
- return MIB.addReg(Reg).addZImm(1).addReg(0).addSImm(Offset);
+ unsigned Reg, bool isKill,
+ int Offset) {
+ return MIB.addReg(Reg, false, false, isKill)
+ .addImm(1).addReg(0).addImm(Offset);
}
/// addRegReg - This function is used to add a memory reference of the form:
/// [Reg + Reg].
inline const MachineInstrBuilder &addRegReg(const MachineInstrBuilder &MIB,
- unsigned Reg1, unsigned Reg2) {
- return MIB.addReg(Reg1).addZImm(1).addReg(Reg2).addSImm(0);
+ unsigned Reg1, bool isKill1,
+ unsigned Reg2, bool isKill2) {
+ return MIB.addReg(Reg1, false, false, isKill1).addImm(1)
+ .addReg(Reg2, false, false, isKill2).addImm(0);
}
inline const MachineInstrBuilder &addFullAddress(const MachineInstrBuilder &MIB,
MIB.addFrameIndex(AM.Base.FrameIndex);
else
assert (0);
- MIB.addZImm(AM.Scale).addReg(AM.IndexReg);
+ MIB.addImm(AM.Scale).addReg(AM.IndexReg);
if (AM.GV)
- return MIB.addGlobalAddress(AM.GV, false, AM.Disp);
+ return MIB.addGlobalAddress(AM.GV, AM.Disp);
else
- return MIB.addSImm(AM.Disp);
+ return MIB.addImm(AM.Disp);
}
/// addFrameReference - This function is used to add a reference to the base of
///
inline const MachineInstrBuilder &
addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0) {
- return MIB.addFrameIndex(FI).addZImm(1).addReg(0).addSImm(Offset);
+ MachineInstr *MI = MIB;
+ MachineFunction &MF = *MI->getParent()->getParent();
+ MachineFrameInfo &MFI = *MF.getFrameInfo();
+ const TargetInstrDesc &TID = MI->getDesc();
+ unsigned Flags = 0;
+ if (TID.mayLoad())
+ Flags |= MachineMemOperand::MOLoad;
+ if (TID.mayStore())
+ Flags |= MachineMemOperand::MOStore;
+ MachineMemOperand MMO(PseudoSourceValue::getFixedStack(FI),
+ Flags,
+ MFI.getObjectOffset(FI) + Offset,
+ MFI.getObjectSize(FI),
+ MFI.getObjectAlignment(FI));
+ return MIB.addFrameIndex(FI).addImm(1).addReg(0).addImm(Offset)
+ .addMemOperand(MMO);
}
/// addConstantPoolReference - This function is used to add a reference to the
/// base of a constant value spilled to the per-function constant pool. The
-/// reference has base register ConstantPoolIndex offset which is retained until
-/// either machine code emission or assembly output. This allows an optional
-/// offset to be added as well.
+/// reference uses the abstract ConstantPoolIndex which is retained until
+/// either machine code emission or assembly output. In PIC mode on x86-32,
+/// the GlobalBaseReg parameter can be used to make this a
+/// GlobalBaseReg-relative reference.
///
inline const MachineInstrBuilder &
addConstantPoolReference(const MachineInstrBuilder &MIB, unsigned CPI,
- int Offset = 0) {
- return MIB.addConstantPoolIndex(CPI).addZImm(1).addReg(0).addSImm(Offset);
+ unsigned GlobalBaseReg = 0) {
+ return MIB.addReg(GlobalBaseReg).addImm(1).addReg(0).addConstantPoolIndex(CPI);
}
} // End llvm namespace