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Diffstat (limited to 'lib/Target/Mips/MipsAsmPrinter.cpp')
-rw-r--r--lib/Target/Mips/MipsAsmPrinter.cpp254
1 files changed, 134 insertions, 120 deletions
diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp
index 8206cfc15704..00ff7545c14a 100644
--- a/lib/Target/Mips/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/MipsAsmPrinter.cpp
@@ -13,29 +13,29 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "mips-asm-printer"
-#include "MipsAsmPrinter.h"
#include "Mips.h"
+#include "MipsAsmPrinter.h"
#include "MipsInstrInfo.h"
+#include "MipsMCInstLower.h"
#include "InstPrinter/MipsInstPrinter.h"
#include "MCTargetDesc/MipsBaseInfo.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Twine.h"
-#include "llvm/Analysis/DebugInfo.h"
#include "llvm/BasicBlock.h"
-#include "llvm/Instructions.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
-#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/TargetRegistry.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
@@ -43,19 +43,6 @@
using namespace llvm;
-void MipsAsmPrinter::EmitInstrWithMacroNoAT(const MachineInstr *MI) {
- MCInst TmpInst;
-
- MCInstLowering.Lower(MI, TmpInst);
- OutStreamer.EmitRawText(StringRef("\t.set\tmacro"));
- if (MipsFI->getEmitNOAT())
- OutStreamer.EmitRawText(StringRef("\t.set\tat"));
- OutStreamer.EmitInstruction(TmpInst);
- if (MipsFI->getEmitNOAT())
- OutStreamer.EmitRawText(StringRef("\t.set\tnoat"));
- OutStreamer.EmitRawText(StringRef("\t.set\tnomacro"));
-}
-
bool MipsAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
MipsFI = MF.getInfo<MipsFunctionInfo>();
AsmPrinter::runOnMachineFunction(MF);
@@ -71,84 +58,33 @@ void MipsAsmPrinter::EmitInstruction(const MachineInstr *MI) {
return;
}
- unsigned Opc = MI->getOpcode();
- MCInst TmpInst0;
- SmallVector<MCInst, 4> MCInsts;
-
- switch (Opc) {
- case Mips::ULW:
- case Mips::ULH:
- case Mips::ULHu:
- case Mips::USW:
- case Mips::USH:
- case Mips::ULW_P8:
- case Mips::ULH_P8:
- case Mips::ULHu_P8:
- case Mips::USW_P8:
- case Mips::USH_P8:
- case Mips::ULD:
- case Mips::ULW64:
- case Mips::ULH64:
- case Mips::ULHu64:
- case Mips::USD:
- case Mips::USW64:
- case Mips::USH64:
- case Mips::ULD_P8:
- case Mips::ULW64_P8:
- case Mips::ULH64_P8:
- case Mips::ULHu64_P8:
- case Mips::USD_P8:
- case Mips::USW64_P8:
- case Mips::USH64_P8: {
- if (OutStreamer.hasRawTextSupport()) {
- EmitInstrWithMacroNoAT(MI);
- return;
- }
-
- MCInstLowering.LowerUnalignedLoadStore(MI, MCInsts);
- for (SmallVector<MCInst, 4>::iterator I = MCInsts.begin(); I
- != MCInsts.end(); ++I)
- OutStreamer.EmitInstruction(*I);
-
- return;
- }
- case Mips::CPRESTORE: {
- const MachineOperand &MO = MI->getOperand(0);
- assert(MO.isImm() && "CPRESTORE's operand must be an immediate.");
- int64_t Offset = MO.getImm();
-
- if (OutStreamer.hasRawTextSupport()) {
- if (!isInt<16>(Offset)) {
- EmitInstrWithMacroNoAT(MI);
+ // Direct object specific instruction lowering
+ if (!OutStreamer.hasRawTextSupport())
+ switch (MI->getOpcode()) {
+ case Mips::DSLL:
+ case Mips::DSRL:
+ case Mips::DSRA:
+ assert(MI->getNumOperands() == 3 &&
+ "Invalid no. of machine operands for shift!");
+ assert(MI->getOperand(2).isImm());
+ int64_t Shift = MI->getOperand(2).getImm();
+ if (Shift > 31) {
+ MCInst TmpInst0;
+ MCInstLowering.LowerLargeShift(MI, TmpInst0, Shift - 32);
+ OutStreamer.EmitInstruction(TmpInst0);
return;
}
- } else {
- MCInstLowering.LowerCPRESTORE(Offset, MCInsts);
-
- for (SmallVector<MCInst, 4>::iterator I = MCInsts.begin();
- I != MCInsts.end(); ++I)
- OutStreamer.EmitInstruction(*I);
-
- return;
+ break;
}
- break;
- }
- case Mips::SETGP01: {
- MCInstLowering.LowerSETGP01(MI, MCInsts);
-
- for (SmallVector<MCInst, 4>::iterator I = MCInsts.begin();
- I != MCInsts.end(); ++I)
- OutStreamer.EmitInstruction(*I);
-
- return;
- }
- default:
- break;
- }
+ MachineBasicBlock::const_instr_iterator I = MI;
+ MachineBasicBlock::const_instr_iterator E = MI->getParent()->instr_end();
- MCInstLowering.Lower(MI, TmpInst0);
- OutStreamer.EmitInstruction(TmpInst0);
+ do {
+ MCInst TmpInst0;
+ MCInstLowering.Lower(I++, TmpInst0);
+ OutStreamer.EmitInstruction(TmpInst0);
+ } while ((I != E) && I->isInsideBundle());
}
//===----------------------------------------------------------------------===//
@@ -197,9 +133,9 @@ void MipsAsmPrinter::printSavedRegsBitmask(raw_ostream &O) {
const MachineFrameInfo *MFI = MF->getFrameInfo();
const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
// size of stack area to which FP callee-saved regs are saved.
- unsigned CPURegSize = Mips::CPURegsRegisterClass->getSize();
- unsigned FGR32RegSize = Mips::FGR32RegisterClass->getSize();
- unsigned AFGR64RegSize = Mips::AFGR64RegisterClass->getSize();
+ unsigned CPURegSize = Mips::CPURegsRegClass.getSize();
+ unsigned FGR32RegSize = Mips::FGR32RegClass.getSize();
+ unsigned AFGR64RegSize = Mips::AFGR64RegClass.getSize();
bool HasAFGR64Reg = false;
unsigned CSFPRegsSize = 0;
unsigned i, e = CSI.size();
@@ -207,11 +143,11 @@ void MipsAsmPrinter::printSavedRegsBitmask(raw_ostream &O) {
// Set FPU Bitmask.
for (i = 0; i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- if (Mips::CPURegsRegisterClass->contains(Reg))
+ if (Mips::CPURegsRegClass.contains(Reg))
break;
unsigned RegNum = getMipsRegisterNumbering(Reg);
- if (Mips::AFGR64RegisterClass->contains(Reg)) {
+ if (Mips::AFGR64RegClass.contains(Reg)) {
FPUBitmask |= (3 << RegNum);
CSFPRegsSize += AFGR64RegSize;
HasAFGR64Reg = true;
@@ -283,8 +219,15 @@ const char *MipsAsmPrinter::getCurrentABIString() const {
}
void MipsAsmPrinter::EmitFunctionEntryLabel() {
- if (OutStreamer.hasRawTextSupport())
+ if (OutStreamer.hasRawTextSupport()) {
+ if (Subtarget->inMips16Mode())
+ OutStreamer.EmitRawText(StringRef("\t.set\tmips16"));
+ else
+ OutStreamer.EmitRawText(StringRef("\t.set\tnomips16"));
+ // leave out until FSF available gas has micromips changes
+ // OutStreamer.EmitRawText(StringRef("\t.set\tnomicromips"));
OutStreamer.EmitRawText("\t.ent\t" + Twine(CurrentFnSym->getName()));
+ }
OutStreamer.EmitLabel(CurrentFnSym);
}
@@ -295,10 +238,6 @@ void MipsAsmPrinter::EmitFunctionBodyStart() {
emitFrameDirective();
- bool EmitCPLoad = (MF->getTarget().getRelocationModel() == Reloc::PIC_) &&
- Subtarget->isABI_O32() && MipsFI->globalBaseRegSet() &&
- MipsFI->globalBaseRegFixed();
-
if (OutStreamer.hasRawTextSupport()) {
SmallString<128> Str;
raw_svector_ostream OS(Str);
@@ -306,20 +245,9 @@ void MipsAsmPrinter::EmitFunctionBodyStart() {
OutStreamer.EmitRawText(OS.str());
OutStreamer.EmitRawText(StringRef("\t.set\tnoreorder"));
-
- // Emit .cpload directive if needed.
- if (EmitCPLoad)
- OutStreamer.EmitRawText(StringRef("\t.cpload\t$25"));
-
OutStreamer.EmitRawText(StringRef("\t.set\tnomacro"));
if (MipsFI->getEmitNOAT())
OutStreamer.EmitRawText(StringRef("\t.set\tnoat"));
- } else if (EmitCPLoad) {
- SmallVector<MCInst, 4> MCInsts;
- MCInstLowering.LowerCPLOAD(MCInsts);
- for (SmallVector<MCInst, 4>::iterator I = MCInsts.begin();
- I != MCInsts.end(); ++I)
- OutStreamer.EmitInstruction(*I);
}
}
@@ -382,14 +310,99 @@ bool MipsAsmPrinter::isBlockOnlyReachableByFallthrough(const MachineBasicBlock*
}
// Print out an operand for an inline asm expression.
-bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
unsigned AsmVariant,const char *ExtraCode,
raw_ostream &O) {
// Does this asm operand have a single letter operand modifier?
- if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
- printOperand(MI, OpNo, O);
+ const MachineOperand &MO = MI->getOperand(OpNum);
+ switch (ExtraCode[0]) {
+ default:
+ // See if this is a generic print operand
+ return AsmPrinter::PrintAsmOperand(MI,OpNum,AsmVariant,ExtraCode,O);
+ case 'X': // hex const int
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << "0x" << StringRef(utohexstr(MO.getImm())).lower();
+ return false;
+ case 'x': // hex const int (low 16 bits)
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << "0x" << StringRef(utohexstr(MO.getImm() & 0xffff)).lower();
+ return false;
+ case 'd': // decimal const int
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << MO.getImm();
+ return false;
+ case 'm': // decimal const int minus 1
+ if ((MO.getType()) != MachineOperand::MO_Immediate)
+ return true;
+ O << MO.getImm() - 1;
+ return false;
+ case 'z': {
+ // $0 if zero, regular printing otherwise
+ if (MO.getType() != MachineOperand::MO_Immediate)
+ return true;
+ int64_t Val = MO.getImm();
+ if (Val)
+ O << Val;
+ else
+ O << "$0";
+ return false;
+ }
+ case 'D': // Second part of a double word register operand
+ case 'L': // Low order register of a double word register operand
+ case 'M': // High order register of a double word register operand
+ {
+ if (OpNum == 0)
+ return true;
+ const MachineOperand &FlagsOP = MI->getOperand(OpNum - 1);
+ if (!FlagsOP.isImm())
+ return true;
+ unsigned Flags = FlagsOP.getImm();
+ unsigned NumVals = InlineAsm::getNumOperandRegisters(Flags);
+ // Number of registers represented by this operand. We are looking
+ // for 2 for 32 bit mode and 1 for 64 bit mode.
+ if (NumVals != 2) {
+ if (Subtarget->isGP64bit() && NumVals == 1 && MO.isReg()) {
+ unsigned Reg = MO.getReg();
+ O << '$' << MipsInstPrinter::getRegisterName(Reg);
+ return false;
+ }
+ return true;
+ }
+
+ unsigned RegOp = OpNum;
+ if (!Subtarget->isGP64bit()){
+ // Endianess reverses which register holds the high or low value
+ // between M and L.
+ switch(ExtraCode[0]) {
+ case 'M':
+ RegOp = (Subtarget->isLittle()) ? OpNum + 1 : OpNum;
+ break;
+ case 'L':
+ RegOp = (Subtarget->isLittle()) ? OpNum : OpNum + 1;
+ break;
+ case 'D': // Always the second part
+ RegOp = OpNum + 1;
+ }
+ if (RegOp >= MI->getNumOperands())
+ return true;
+ const MachineOperand &MO = MI->getOperand(RegOp);
+ if (!MO.isReg())
+ return true;
+ unsigned Reg = MO.getReg();
+ O << '$' << MipsInstPrinter::getRegisterName(Reg);
+ return false;
+ }
+ }
+ }
+ }
+
+ printOperand(MI, OpNum, O);
return false;
}
@@ -398,11 +411,12 @@ bool MipsAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
const char *ExtraCode,
raw_ostream &O) {
if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
+ return true; // Unknown modifier.
const MachineOperand &MO = MI->getOperand(OpNum);
assert(MO.isReg() && "unexpected inline asm memory operand");
O << "0($" << MipsInstPrinter::getRegisterName(MO.getReg()) << ")";
+
return false;
}
@@ -450,7 +464,7 @@ void MipsAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
break;
case MachineOperand::MO_BlockAddress: {
- MCSymbol* BA = GetBlockAddressSymbol(MO.getBlockAddress());
+ MCSymbol *BA = GetBlockAddressSymbol(MO.getBlockAddress());
O << BA->getName();
break;
}
@@ -511,7 +525,7 @@ printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O) {
void MipsAsmPrinter::
printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
const char *Modifier) {
- const MachineOperand& MO = MI->getOperand(opNum);
+ const MachineOperand &MO = MI->getOperand(opNum);
O << Mips::MipsFCCToString((Mips::CondCode)MO.getImm());
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-22 22:56:35 +0000