#include "SystemZMCInstLower.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInstBuilder.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Target/Mangler.h"
using namespace llvm;
+// Return an RI instruction like MI with opcode Opcode, but with the
+// GR64 register operands turned into GR32s.
+static MCInst lowerRILow(const MachineInstr *MI, unsigned Opcode) {
+ if (MI->isCompare())
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsGR32(MI->getOperand(0).getReg()))
+ .addImm(MI->getOperand(1).getImm());
+ else
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsGR32(MI->getOperand(0).getReg()))
+ .addReg(SystemZMC::getRegAsGR32(MI->getOperand(1).getReg()))
+ .addImm(MI->getOperand(2).getImm());
+}
+
+// Return an RI instruction like MI with opcode Opcode, but with the
+// GR64 register operands turned into GRH32s.
+static MCInst lowerRIHigh(const MachineInstr *MI, unsigned Opcode) {
+ if (MI->isCompare())
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsGRH32(MI->getOperand(0).getReg()))
+ .addImm(MI->getOperand(1).getImm());
+ else
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsGRH32(MI->getOperand(0).getReg()))
+ .addReg(SystemZMC::getRegAsGRH32(MI->getOperand(1).getReg()))
+ .addImm(MI->getOperand(2).getImm());
+}
+
+// Return an RI instruction like MI with opcode Opcode, but with the
+// R2 register turned into a GR64.
+static MCInst lowerRIEfLow(const MachineInstr *MI, unsigned Opcode) {
+ return MCInstBuilder(Opcode)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addReg(SystemZMC::getRegAsGR64(MI->getOperand(2).getReg()))
+ .addImm(MI->getOperand(3).getImm())
+ .addImm(MI->getOperand(4).getImm())
+ .addImm(MI->getOperand(5).getImm());
+}
+
+static const MCSymbolRefExpr *getTLSGetOffset(MCContext &Context) {
+ StringRef Name = "__tls_get_offset";
+ return MCSymbolRefExpr::create(Context.getOrCreateSymbol(Name),
+ MCSymbolRefExpr::VK_PLT,
+ Context);
+}
+
+static const MCSymbolRefExpr *getGlobalOffsetTable(MCContext &Context) {
+ StringRef Name = "_GLOBAL_OFFSET_TABLE_";
+ return MCSymbolRefExpr::create(Context.getOrCreateSymbol(Name),
+ MCSymbolRefExpr::VK_None,
+ Context);
+}
+
+// MI loads the high part of a vector from memory. Return an instruction
+// that uses replicating vector load Opcode to do the same thing.
+static MCInst lowerSubvectorLoad(const MachineInstr *MI, unsigned Opcode) {
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(0).getReg()))
+ .addReg(MI->getOperand(1).getReg())
+ .addImm(MI->getOperand(2).getImm())
+ .addReg(MI->getOperand(3).getReg());
+}
+
+// MI stores the high part of a vector to memory. Return an instruction
+// that uses elemental vector store Opcode to do the same thing.
+static MCInst lowerSubvectorStore(const MachineInstr *MI, unsigned Opcode) {
+ return MCInstBuilder(Opcode)
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(0).getReg()))
+ .addReg(MI->getOperand(1).getReg())
+ .addImm(MI->getOperand(2).getImm())
+ .addReg(MI->getOperand(3).getReg())
+ .addImm(0);
+}
+
void SystemZAsmPrinter::EmitInstruction(const MachineInstr *MI) {
- SystemZMCInstLower Lower(Mang, MF->getContext(), *this);
+ SystemZMCInstLower Lower(MF->getContext(), *this);
MCInst LoweredMI;
- Lower.lower(MI, LoweredMI);
- OutStreamer.EmitInstruction(LoweredMI);
+ switch (MI->getOpcode()) {
+ case SystemZ::Return:
+ LoweredMI = MCInstBuilder(SystemZ::BR).addReg(SystemZ::R14D);
+ break;
+
+ case SystemZ::CallBRASL:
+ LoweredMI = MCInstBuilder(SystemZ::BRASL)
+ .addReg(SystemZ::R14D)
+ .addExpr(Lower.getExpr(MI->getOperand(0), MCSymbolRefExpr::VK_PLT));
+ break;
+
+ case SystemZ::CallBASR:
+ LoweredMI = MCInstBuilder(SystemZ::BASR)
+ .addReg(SystemZ::R14D)
+ .addReg(MI->getOperand(0).getReg());
+ break;
+
+ case SystemZ::CallJG:
+ LoweredMI = MCInstBuilder(SystemZ::JG)
+ .addExpr(Lower.getExpr(MI->getOperand(0), MCSymbolRefExpr::VK_PLT));
+ break;
+
+ case SystemZ::CallBR:
+ LoweredMI = MCInstBuilder(SystemZ::BR).addReg(SystemZ::R1D);
+ break;
+
+ case SystemZ::TLS_GDCALL:
+ LoweredMI = MCInstBuilder(SystemZ::BRASL)
+ .addReg(SystemZ::R14D)
+ .addExpr(getTLSGetOffset(MF->getContext()))
+ .addExpr(Lower.getExpr(MI->getOperand(0), MCSymbolRefExpr::VK_TLSGD));
+ break;
+
+ case SystemZ::TLS_LDCALL:
+ LoweredMI = MCInstBuilder(SystemZ::BRASL)
+ .addReg(SystemZ::R14D)
+ .addExpr(getTLSGetOffset(MF->getContext()))
+ .addExpr(Lower.getExpr(MI->getOperand(0), MCSymbolRefExpr::VK_TLSLDM));
+ break;
+
+ case SystemZ::GOT:
+ LoweredMI = MCInstBuilder(SystemZ::LARL)
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(getGlobalOffsetTable(MF->getContext()));
+ break;
+
+ case SystemZ::IILF64:
+ LoweredMI = MCInstBuilder(SystemZ::IILF)
+ .addReg(SystemZMC::getRegAsGR32(MI->getOperand(0).getReg()))
+ .addImm(MI->getOperand(2).getImm());
+ break;
+
+ case SystemZ::IIHF64:
+ LoweredMI = MCInstBuilder(SystemZ::IIHF)
+ .addReg(SystemZMC::getRegAsGRH32(MI->getOperand(0).getReg()))
+ .addImm(MI->getOperand(2).getImm());
+ break;
+
+ case SystemZ::RISBHH:
+ case SystemZ::RISBHL:
+ LoweredMI = lowerRIEfLow(MI, SystemZ::RISBHG);
+ break;
+
+ case SystemZ::RISBLH:
+ case SystemZ::RISBLL:
+ LoweredMI = lowerRIEfLow(MI, SystemZ::RISBLG);
+ break;
+
+ case SystemZ::VLVGP32:
+ LoweredMI = MCInstBuilder(SystemZ::VLVGP)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(SystemZMC::getRegAsGR64(MI->getOperand(1).getReg()))
+ .addReg(SystemZMC::getRegAsGR64(MI->getOperand(2).getReg()));
+ break;
+
+ case SystemZ::VLR32:
+ case SystemZ::VLR64:
+ LoweredMI = MCInstBuilder(SystemZ::VLR)
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(0).getReg()))
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(1).getReg()));
+ break;
+
+ case SystemZ::VL32:
+ LoweredMI = lowerSubvectorLoad(MI, SystemZ::VLREPF);
+ break;
+
+ case SystemZ::VL64:
+ LoweredMI = lowerSubvectorLoad(MI, SystemZ::VLREPG);
+ break;
+
+ case SystemZ::VST32:
+ LoweredMI = lowerSubvectorStore(MI, SystemZ::VSTEF);
+ break;
+
+ case SystemZ::VST64:
+ LoweredMI = lowerSubvectorStore(MI, SystemZ::VSTEG);
+ break;
+
+ case SystemZ::LFER:
+ LoweredMI = MCInstBuilder(SystemZ::VLGVF)
+ .addReg(SystemZMC::getRegAsGR64(MI->getOperand(0).getReg()))
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(1).getReg()))
+ .addReg(0).addImm(0);
+ break;
+
+ case SystemZ::LEFR:
+ LoweredMI = MCInstBuilder(SystemZ::VLVGF)
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(0).getReg()))
+ .addReg(SystemZMC::getRegAsVR128(MI->getOperand(0).getReg()))
+ .addReg(MI->getOperand(1).getReg())
+ .addReg(0).addImm(0);
+ break;
+
+#define LOWER_LOW(NAME) \
+ case SystemZ::NAME##64: LoweredMI = lowerRILow(MI, SystemZ::NAME); break
+
+ LOWER_LOW(IILL);
+ LOWER_LOW(IILH);
+ LOWER_LOW(TMLL);
+ LOWER_LOW(TMLH);
+ LOWER_LOW(NILL);
+ LOWER_LOW(NILH);
+ LOWER_LOW(NILF);
+ LOWER_LOW(OILL);
+ LOWER_LOW(OILH);
+ LOWER_LOW(OILF);
+ LOWER_LOW(XILF);
+
+#undef LOWER_LOW
+
+#define LOWER_HIGH(NAME) \
+ case SystemZ::NAME##64: LoweredMI = lowerRIHigh(MI, SystemZ::NAME); break
+
+ LOWER_HIGH(IIHL);
+ LOWER_HIGH(IIHH);
+ LOWER_HIGH(TMHL);
+ LOWER_HIGH(TMHH);
+ LOWER_HIGH(NIHL);
+ LOWER_HIGH(NIHH);
+ LOWER_HIGH(NIHF);
+ LOWER_HIGH(OIHL);
+ LOWER_HIGH(OIHH);
+ LOWER_HIGH(OIHF);
+ LOWER_HIGH(XIHF);
+
+#undef LOWER_HIGH
+
+ case SystemZ::Serialize:
+ if (MF->getSubtarget<SystemZSubtarget>().hasFastSerialization())
+ LoweredMI = MCInstBuilder(SystemZ::AsmBCR)
+ .addImm(14).addReg(SystemZ::R0D);
+ else
+ LoweredMI = MCInstBuilder(SystemZ::AsmBCR)
+ .addImm(15).addReg(SystemZ::R0D);
+ break;
+
+ default:
+ Lower.lower(MI, LoweredMI);
+ break;
+ }
+ EmitToStreamer(*OutStreamer, LoweredMI);
}
// Convert a SystemZ-specific constant pool modifier into the associated
static MCSymbolRefExpr::VariantKind
getModifierVariantKind(SystemZCP::SystemZCPModifier Modifier) {
switch (Modifier) {
+ case SystemZCP::TLSGD: return MCSymbolRefExpr::VK_TLSGD;
+ case SystemZCP::TLSLDM: return MCSymbolRefExpr::VK_TLSLDM;
+ case SystemZCP::DTPOFF: return MCSymbolRefExpr::VK_DTPOFF;
case SystemZCP::NTPOFF: return MCSymbolRefExpr::VK_NTPOFF;
}
llvm_unreachable("Invalid SystemCPModifier!");
void SystemZAsmPrinter::
EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
- SystemZConstantPoolValue *ZCPV =
- static_cast<SystemZConstantPoolValue*>(MCPV);
+ auto *ZCPV = static_cast<SystemZConstantPoolValue*>(MCPV);
const MCExpr *Expr =
- MCSymbolRefExpr::Create(Mang->getSymbol(ZCPV->getGlobalValue()),
+ MCSymbolRefExpr::create(getSymbol(ZCPV->getGlobalValue()),
getModifierVariantKind(ZCPV->getModifier()),
OutContext);
- uint64_t Size = TM.getDataLayout()->getTypeAllocSize(ZCPV->getType());
+ uint64_t Size = getDataLayout().getTypeAllocSize(ZCPV->getType());
- OutStreamer.EmitValue(Expr, Size);
+ OutStreamer->EmitValue(Expr, Size);
}
bool SystemZAsmPrinter::PrintAsmOperand(const MachineInstr *MI,
return true;
OS << -int64_t(MI->getOperand(OpNo).getImm());
} else {
- SystemZMCInstLower Lower(Mang, MF->getContext(), *this);
+ SystemZMCInstLower Lower(MF->getContext(), *this);
MCOperand MO(Lower.lowerOperand(MI->getOperand(OpNo)));
- SystemZInstPrinter::printOperand(MO, OS);
+ SystemZInstPrinter::printOperand(MO, MAI, OS);
}
return false;
}
return false;
}
-void SystemZAsmPrinter::EmitEndOfAsmFile(Module &M) {
- if (Subtarget->isTargetELF()) {
- const TargetLoweringObjectFileELF &TLOFELF =
- static_cast<const TargetLoweringObjectFileELF &>(getObjFileLowering());
-
- MachineModuleInfoELF &MMIELF = MMI->getObjFileInfo<MachineModuleInfoELF>();
-
- // Output stubs for external and common global variables.
- MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList();
- if (!Stubs.empty()) {
- OutStreamer.SwitchSection(TLOFELF.getDataRelSection());
- const DataLayout *TD = TM.getDataLayout();
-
- for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
- OutStreamer.EmitLabel(Stubs[i].first);
- OutStreamer.EmitSymbolValue(Stubs[i].second.getPointer(),
- TD->getPointerSize(0), 0);
- }
- Stubs.clear();
- }
- }
-}
-
// Force static initialization.
extern "C" void LLVMInitializeSystemZAsmPrinter() {
RegisterAsmPrinter<SystemZAsmPrinter> X(TheSystemZTarget);
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