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path: root/lib/Target/PowerPC/PPCAsmPrinter.cpp
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Diffstat (limited to 'lib/Target/PowerPC/PPCAsmPrinter.cpp')
-rw-r--r--lib/Target/PowerPC/PPCAsmPrinter.cpp343
1 files changed, 251 insertions, 92 deletions
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 5648873..1327290 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -18,9 +18,9 @@
#include "PPC.h"
#include "InstPrinter/PPCInstPrinter.h"
-#include "PPCMachineFunctionInfo.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "MCTargetDesc/PPCPredicates.h"
+#include "PPCMachineFunctionInfo.h"
#include "PPCSubtarget.h"
#include "PPCTargetMachine.h"
#include "PPCTargetStreamer.h"
@@ -34,6 +34,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/StackMaps.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfo.h"
@@ -67,12 +68,13 @@ namespace {
class PPCAsmPrinter : public AsmPrinter {
protected:
MapVector<MCSymbol*, MCSymbol*> TOC;
- const PPCSubtarget &Subtarget;
+ const PPCSubtarget *Subtarget;
uint64_t TOCLabelID;
+ StackMaps SM;
public:
- explicit PPCAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
- : AsmPrinter(TM, Streamer),
- Subtarget(TM.getSubtarget<PPCSubtarget>()), TOCLabelID(0) {}
+ explicit PPCAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : AsmPrinter(TM, std::move(Streamer)), TOCLabelID(0), SM(*this) {}
const char *getPassName() const override {
return "PowerPC Assembly Printer";
@@ -90,13 +92,26 @@ namespace {
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O) override;
+
+ void EmitEndOfAsmFile(Module &M) override;
+
+ void LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM,
+ const MachineInstr &MI);
+ void LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM,
+ const MachineInstr &MI);
+ void EmitTlsCall(const MachineInstr *MI, MCSymbolRefExpr::VariantKind VK);
+ bool runOnMachineFunction(MachineFunction &MF) override {
+ Subtarget = &MF.getSubtarget<PPCSubtarget>();
+ return AsmPrinter::runOnMachineFunction(MF);
+ }
};
/// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
class PPCLinuxAsmPrinter : public PPCAsmPrinter {
public:
- explicit PPCLinuxAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
- : PPCAsmPrinter(TM, Streamer) {}
+ explicit PPCLinuxAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : PPCAsmPrinter(TM, std::move(Streamer)) {}
const char *getPassName() const override {
return "Linux PPC Assembly Printer";
@@ -115,8 +130,9 @@ namespace {
/// OS X
class PPCDarwinAsmPrinter : public PPCAsmPrinter {
public:
- explicit PPCDarwinAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
- : PPCAsmPrinter(TM, Streamer) {}
+ explicit PPCDarwinAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : PPCAsmPrinter(TM, std::move(Streamer)) {}
const char *getPassName() const override {
return "Darwin PPC Assembly Printer";
@@ -135,6 +151,7 @@ static const char *stripRegisterPrefix(const char *RegName) {
switch (RegName[0]) {
case 'r':
case 'f':
+ case 'q': // for QPX
case 'v':
if (RegName[1] == 's')
return RegName + 2;
@@ -147,7 +164,7 @@ static const char *stripRegisterPrefix(const char *RegName) {
void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
- const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
+ const DataLayout *DL = TM.getDataLayout();
const MachineOperand &MO = MI->getOperand(OpNo);
switch (MO.getType()) {
@@ -155,7 +172,8 @@ void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
const char *RegName = PPCInstPrinter::getRegisterName(MO.getReg());
// Linux assembler (Others?) does not take register mnemonics.
// FIXME - What about special registers used in mfspr/mtspr?
- if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName);
+ if (!Subtarget->isDarwin())
+ RegName = stripRegisterPrefix(RegName);
O << RegName;
return;
}
@@ -270,7 +288,8 @@ bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
case 'y': // A memory reference for an X-form instruction
{
const char *RegName = "r0";
- if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName);
+ if (!Subtarget->isDarwin())
+ RegName = stripRegisterPrefix(RegName);
O << RegName << ", ";
printOperand(MI, OpNo, O);
return false;
@@ -302,7 +321,7 @@ bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
/// exists for it. If not, create one. Then return a symbol that references
/// the TOC entry.
MCSymbol *PPCAsmPrinter::lookUpOrCreateTOCEntry(MCSymbol *Sym) {
- const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
+ const DataLayout *DL = TM.getDataLayout();
MCSymbol *&TOCEntry = TOC[Sym];
// To avoid name clash check if the name already exists.
@@ -316,13 +335,120 @@ MCSymbol *PPCAsmPrinter::lookUpOrCreateTOCEntry(MCSymbol *Sym) {
return TOCEntry;
}
+void PPCAsmPrinter::EmitEndOfAsmFile(Module &M) {
+ SM.serializeToStackMapSection();
+}
+
+void PPCAsmPrinter::LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM,
+ const MachineInstr &MI) {
+ unsigned NumNOPBytes = MI.getOperand(1).getImm();
+
+ SM.recordStackMap(MI);
+ assert(NumNOPBytes % 4 == 0 && "Invalid number of NOP bytes requested!");
+
+ // Scan ahead to trim the shadow.
+ const MachineBasicBlock &MBB = *MI.getParent();
+ MachineBasicBlock::const_iterator MII(MI);
+ ++MII;
+ while (NumNOPBytes > 0) {
+ if (MII == MBB.end() || MII->isCall() ||
+ MII->getOpcode() == PPC::DBG_VALUE ||
+ MII->getOpcode() == TargetOpcode::PATCHPOINT ||
+ MII->getOpcode() == TargetOpcode::STACKMAP)
+ break;
+ ++MII;
+ NumNOPBytes -= 4;
+ }
+
+ // Emit nops.
+ for (unsigned i = 0; i < NumNOPBytes; i += 4)
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP));
+}
+
+// Lower a patchpoint of the form:
+// [<def>], <id>, <numBytes>, <target>, <numArgs>
+void PPCAsmPrinter::LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM,
+ const MachineInstr &MI) {
+ SM.recordPatchPoint(MI);
+ PatchPointOpers Opers(&MI);
+
+ int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm();
+ unsigned EncodedBytes = 0;
+ if (CallTarget) {
+ assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget &&
+ "High 16 bits of call target should be zero.");
+ unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg();
+ EncodedBytes = 6*4;
+ // Materialize the jump address:
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LI8)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 32) & 0xFFFF));
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::RLDIC)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(32).addImm(16));
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORIS8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 16) & 0xFFFF));
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORI8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(CallTarget & 0xFFFF));
+
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR8).addReg(ScratchReg));
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTRL8));
+ }
+
+ // Emit padding.
+ unsigned NumBytes = Opers.getMetaOper(PatchPointOpers::NBytesPos).getImm();
+ assert(NumBytes >= EncodedBytes &&
+ "Patchpoint can't request size less than the length of a call.");
+ assert((NumBytes - EncodedBytes) % 4 == 0 &&
+ "Invalid number of NOP bytes requested!");
+ for (unsigned i = EncodedBytes; i < NumBytes; i += 4)
+ EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP));
+}
+
+/// EmitTlsCall -- Given a GETtls[ld]ADDR[32] instruction, print a
+/// call to __tls_get_addr to the current output stream.
+void PPCAsmPrinter::EmitTlsCall(const MachineInstr *MI,
+ MCSymbolRefExpr::VariantKind VK) {
+ StringRef Name = "__tls_get_addr";
+ MCSymbol *TlsGetAddr = OutContext.GetOrCreateSymbol(Name);
+ MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
+
+ assert(MI->getOperand(0).isReg() &&
+ ((Subtarget->isPPC64() && MI->getOperand(0).getReg() == PPC::X3) ||
+ (!Subtarget->isPPC64() && MI->getOperand(0).getReg() == PPC::R3)) &&
+ "GETtls[ld]ADDR[32] must define GPR3");
+ assert(MI->getOperand(1).isReg() &&
+ ((Subtarget->isPPC64() && MI->getOperand(1).getReg() == PPC::X3) ||
+ (!Subtarget->isPPC64() && MI->getOperand(1).getReg() == PPC::R3)) &&
+ "GETtls[ld]ADDR[32] must read GPR3");
+
+ if (!Subtarget->isPPC64() && !Subtarget->isDarwin() &&
+ TM.getRelocationModel() == Reloc::PIC_)
+ Kind = MCSymbolRefExpr::VK_PLT;
+ const MCSymbolRefExpr *TlsRef =
+ MCSymbolRefExpr::Create(TlsGetAddr, Kind, OutContext);
+ const MachineOperand &MO = MI->getOperand(2);
+ const GlobalValue *GValue = MO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar = MCSymbolRefExpr::Create(MOSymbol, VK, OutContext);
+ EmitToStreamer(OutStreamer,
+ MCInstBuilder(Subtarget->isPPC64() ?
+ PPC::BL8_NOP_TLS : PPC::BL_TLS)
+ .addExpr(TlsRef)
+ .addExpr(SymVar));
+}
/// EmitInstruction -- Print out a single PowerPC MI in Darwin syntax to
/// the current output stream.
///
void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCInst TmpInst;
- bool isPPC64 = Subtarget.isPPC64();
+ bool isPPC64 = Subtarget->isPPC64();
bool isDarwin = Triple(TM.getTargetTriple()).isOSDarwin();
const Module *M = MF->getFunction()->getParent();
PICLevel::Level PL = M->getPICLevel();
@@ -332,6 +458,11 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
default: break;
case TargetOpcode::DBG_VALUE:
llvm_unreachable("Should be handled target independently");
+ case TargetOpcode::STACKMAP:
+ return LowerSTACKMAP(OutStreamer, SM, *MI);
+ case TargetOpcode::PATCHPOINT:
+ return LowerPATCHPOINT(OutStreamer, SM, *MI);
+
case PPC::MoveGOTtoLR: {
// Transform %LR = MoveGOTtoLR
// Into this: bl _GLOBAL_OFFSET_TABLE_@local-4
@@ -602,7 +733,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
case PPC::ADDISgotTprelHA: {
// Transform: %Xd = ADDISgotTprelHA %X2, <ga:@sym>
// Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC");
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -611,7 +742,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8)
.addReg(MI->getOperand(0).getReg())
- .addReg(PPC::X2)
+ .addReg(MI->getOperand(1).getReg())
.addExpr(SymGotTprel));
return;
}
@@ -681,7 +812,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
case PPC::ADDIStlsgdHA: {
// Transform: %Xd = ADDIStlsgdHA %X2, <ga:@sym>
// Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC");
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -690,7 +821,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8)
.addReg(MI->getOperand(0).getReg())
- .addReg(PPC::X2)
+ .addReg(MI->getOperand(1).getReg())
.addExpr(SymGotTlsGD));
return;
}
@@ -703,22 +834,30 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
- const MCExpr *SymGotTlsGD =
- MCSymbolRefExpr::Create(MOSymbol, Subtarget.isPPC64() ?
- MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO :
- MCSymbolRefExpr::VK_PPC_GOT_TLSGD,
- OutContext);
+ const MCExpr *SymGotTlsGD = MCSymbolRefExpr::Create(
+ MOSymbol, Subtarget->isPPC64() ? MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO
+ : MCSymbolRefExpr::VK_PPC_GOT_TLSGD,
+ OutContext);
EmitToStreamer(OutStreamer,
- MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
+ MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI)
.addReg(MI->getOperand(0).getReg())
.addReg(MI->getOperand(1).getReg())
.addExpr(SymGotTlsGD));
return;
}
+ case PPC::GETtlsADDR:
+ // Transform: %X3 = GETtlsADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym at tlsgd)
+ case PPC::GETtlsADDR32: {
+ // Transform: %R3 = GETtlsADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym at tlsgd)@PLT
+ EmitTlsCall(MI, MCSymbolRefExpr::VK_PPC_TLSGD);
+ return;
+ }
case PPC::ADDIStlsldHA: {
// Transform: %Xd = ADDIStlsldHA %X2, <ga:@sym>
// Into: %Xd = ADDIS8 %X2, sym@got@tlsld@ha
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ assert(Subtarget->isPPC64() && "Not supported for 32-bit PowerPC");
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -727,7 +866,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS8)
.addReg(MI->getOperand(0).getReg())
- .addReg(PPC::X2)
+ .addReg(MI->getOperand(1).getReg())
.addExpr(SymGotTlsLD));
return;
}
@@ -740,16 +879,24 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
- const MCExpr *SymGotTlsLD =
- MCSymbolRefExpr::Create(MOSymbol, Subtarget.isPPC64() ?
- MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO :
- MCSymbolRefExpr::VK_PPC_GOT_TLSLD,
- OutContext);
+ const MCExpr *SymGotTlsLD = MCSymbolRefExpr::Create(
+ MOSymbol, Subtarget->isPPC64() ? MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO
+ : MCSymbolRefExpr::VK_PPC_GOT_TLSLD,
+ OutContext);
EmitToStreamer(OutStreamer,
- MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
- .addReg(MI->getOperand(0).getReg())
- .addReg(MI->getOperand(1).getReg())
- .addExpr(SymGotTlsLD));
+ MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymGotTlsLD));
+ return;
+ }
+ case PPC::GETtlsldADDR:
+ // Transform: %X3 = GETtlsldADDR %X3, <ga:@sym>
+ // Into: BL8_NOP_TLS __tls_get_addr(sym at tlsld)
+ case PPC::GETtlsldADDR32: {
+ // Transform: %R3 = GETtlsldADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym at tlsld)@PLT
+ EmitTlsCall(MI, MCSymbolRefExpr::VK_PPC_TLSLD);
return;
}
case PPC::ADDISdtprelHA:
@@ -764,11 +911,12 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
const MCExpr *SymDtprel =
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_HA,
OutContext);
- EmitToStreamer(OutStreamer,
- MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDIS8 : PPC::ADDIS)
- .addReg(MI->getOperand(0).getReg())
- .addReg(Subtarget.isPPC64() ? PPC::X3 : PPC::R3)
- .addExpr(SymDtprel));
+ EmitToStreamer(
+ OutStreamer,
+ MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDIS8 : PPC::ADDIS)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(Subtarget->isPPC64() ? PPC::X3 : PPC::R3)
+ .addExpr(SymDtprel));
return;
}
case PPC::ADDIdtprelL:
@@ -784,15 +932,15 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_LO,
OutContext);
EmitToStreamer(OutStreamer,
- MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
- .addReg(MI->getOperand(0).getReg())
- .addReg(MI->getOperand(1).getReg())
- .addExpr(SymDtprel));
+ MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDI8 : PPC::ADDI)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymDtprel));
return;
}
case PPC::MFOCRF:
case PPC::MFOCRF8:
- if (!Subtarget.hasMFOCRF()) {
+ if (!Subtarget->hasMFOCRF()) {
// Transform: %R3 = MFOCRF %CR7
// Into: %R3 = MFCR ;; cr7
unsigned NewOpcode =
@@ -806,7 +954,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
break;
case PPC::MTOCRF:
case PPC::MTOCRF8:
- if (!Subtarget.hasMFOCRF()) {
+ if (!Subtarget->hasMFOCRF()) {
// Transform: %CR7 = MTOCRF %R3
// Into: MTCRF mask, %R3 ;; cr7
unsigned NewOpcode =
@@ -831,7 +979,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
// suite shows a handful of test cases that fail this check for
// Darwin. Those need to be investigated before this sanity test
// can be enabled for those subtargets.
- if (!Subtarget.isDarwin()) {
+ if (!Subtarget->isDarwin()) {
unsigned OpNum = (MI->getOpcode() == PPC::STD) ? 2 : 1;
const MachineOperand &MO = MI->getOperand(OpNum);
if (MO.isGlobal() && MO.getGlobal()->getAlignment() < 4)
@@ -847,7 +995,7 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) {
- if (Subtarget.isELFv2ABI()) {
+ if (static_cast<const PPCTargetMachine &>(TM).isELFv2ABI()) {
PPCTargetStreamer *TS =
static_cast<PPCTargetStreamer *>(OutStreamer.getTargetStreamer());
@@ -855,15 +1003,15 @@ void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) {
TS->emitAbiVersion(2);
}
- if (Subtarget.isPPC64() || TM.getRelocationModel() != Reloc::PIC_)
+ if (static_cast<const PPCTargetMachine &>(TM).isPPC64() ||
+ TM.getRelocationModel() != Reloc::PIC_)
return AsmPrinter::EmitStartOfAsmFile(M);
if (M.getPICLevel() == PICLevel::Small)
return AsmPrinter::EmitStartOfAsmFile(M);
- OutStreamer.SwitchSection(OutContext.getELFSection(".got2",
- ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
- SectionKind::getReadOnly()));
+ OutStreamer.SwitchSection(OutContext.getELFSection(
+ ".got2", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC));
MCSymbol *TOCSym = OutContext.GetOrCreateSymbol(Twine(".LTOC"));
MCSymbol *CurrentPos = OutContext.CreateTempSymbol();
@@ -884,12 +1032,12 @@ void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) {
void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
// linux/ppc32 - Normal entry label.
- if (!Subtarget.isPPC64() &&
+ if (!Subtarget->isPPC64() &&
(TM.getRelocationModel() != Reloc::PIC_ ||
MF->getFunction()->getParent()->getPICLevel() == PICLevel::Small))
return AsmPrinter::EmitFunctionEntryLabel();
- if (!Subtarget.isPPC64()) {
+ if (!Subtarget->isPPC64()) {
const PPCFunctionInfo *PPCFI = MF->getInfo<PPCFunctionInfo>();
if (PPCFI->usesPICBase()) {
MCSymbol *RelocSymbol = PPCFI->getPICOffsetSymbol();
@@ -910,14 +1058,13 @@ void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
}
// ELFv2 ABI - Normal entry label.
- if (Subtarget.isELFv2ABI())
+ if (Subtarget->isELFv2ABI())
return AsmPrinter::EmitFunctionEntryLabel();
// Emit an official procedure descriptor.
MCSectionSubPair Current = OutStreamer.getCurrentSection();
- const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".opd",
- ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
- SectionKind::getReadOnly());
+ const MCSectionELF *Section = OutStreamer.getContext().getELFSection(
+ ".opd", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
OutStreamer.SwitchSection(Section);
OutStreamer.EmitLabel(CurrentFnSym);
OutStreamer.EmitValueToAlignment(8);
@@ -944,7 +1091,7 @@ void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
- const DataLayout *TD = TM.getSubtargetImpl()->getDataLayout();
+ const DataLayout *TD = TM.getDataLayout();
bool isPPC64 = TD->getPointerSizeInBits() == 64;
@@ -955,13 +1102,11 @@ bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
const MCSectionELF *Section;
if (isPPC64)
- Section = OutStreamer.getContext().getELFSection(".toc",
- ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
- SectionKind::getReadOnly());
- else
- Section = OutStreamer.getContext().getELFSection(".got2",
- ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
- SectionKind::getReadOnly());
+ Section = OutStreamer.getContext().getELFSection(
+ ".toc", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
+ else
+ Section = OutStreamer.getContext().getELFSection(
+ ".got2", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
OutStreamer.SwitchSection(Section);
for (MapVector<MCSymbol*, MCSymbol*>::iterator I = TOC.begin(),
@@ -1015,7 +1160,7 @@ void PPCLinuxAsmPrinter::EmitFunctionBodyStart() {
//
// This ensures we have r2 set up correctly while executing the function
// body, no matter which entry point is called.
- if (Subtarget.isELFv2ABI()
+ if (Subtarget->isELFv2ABI()
// Only do all that if the function uses r2 in the first place.
&& !MF->getRegInfo().use_empty(PPC::X2)) {
@@ -1070,7 +1215,7 @@ void PPCLinuxAsmPrinter::EmitFunctionBodyEnd() {
// FIXME: We should fill in the eight-byte mandatory fields as described in
// the PPC64 ELF ABI (this is a low-priority item because GDB does not
// currently make use of these fields).
- if (Subtarget.isPPC64()) {
+ if (Subtarget->isPPC64()) {
OutStreamer.EmitIntValue(0, 4/*size*/);
OutStreamer.EmitIntValue(0, 8/*size*/);
}
@@ -1101,13 +1246,21 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
"ppc64le"
};
- unsigned Directive = Subtarget.getDarwinDirective();
- if (Subtarget.hasMFOCRF() && Directive < PPC::DIR_970)
- Directive = PPC::DIR_970;
- if (Subtarget.hasAltivec() && Directive < PPC::DIR_7400)
- Directive = PPC::DIR_7400;
- if (Subtarget.isPPC64() && Directive < PPC::DIR_64)
- Directive = PPC::DIR_64;
+ // Get the numerically largest directive.
+ // FIXME: How should we merge darwin directives?
+ unsigned Directive = PPC::DIR_NONE;
+ for (const Function &F : M) {
+ const PPCSubtarget &STI = TM.getSubtarget<PPCSubtarget>(F);
+ unsigned FDir = STI.getDarwinDirective();
+ Directive = Directive > FDir ? FDir : STI.getDarwinDirective();
+ if (STI.hasMFOCRF() && Directive < PPC::DIR_970)
+ Directive = PPC::DIR_970;
+ if (STI.hasAltivec() && Directive < PPC::DIR_7400)
+ Directive = PPC::DIR_7400;
+ if (STI.isPPC64() && Directive < PPC::DIR_64)
+ Directive = PPC::DIR_64;
+ }
+
assert(Directive <= PPC::DIR_64 && "Directive out of range.");
assert(Directive < array_lengthof(CPUDirectives) &&
@@ -1150,10 +1303,18 @@ static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) {
void PPCDarwinAsmPrinter::
EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
- bool isPPC64 =
- TM.getSubtargetImpl()->getDataLayout()->getPointerSizeInBits() == 64;
- bool isDarwin = Subtarget.isDarwin();
-
+ bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
+
+ // Construct a local MCSubtargetInfo and shadow EmitToStreamer here.
+ // This is because the MachineFunction won't exist (but have not yet been
+ // freed) and since we're at the global level we can use the default
+ // constructed subtarget.
+ std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
+ TM.getTargetTriple(), TM.getTargetCPU(), TM.getTargetFeatureString()));
+ auto EmitToStreamer = [&STI] (MCStreamer &S, const MCInst &Inst) {
+ S.EmitInstruction(Inst, *STI);
+ };
+
const TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
@@ -1192,7 +1353,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
// mflr r11
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MFLR).addReg(PPC::R11));
// addis r11, r11, ha16(LazyPtr - AnonSymbol)
- const MCExpr *SubHa16 = PPCMCExpr::CreateHa(Sub, isDarwin, OutContext);
+ const MCExpr *SubHa16 = PPCMCExpr::CreateHa(Sub, true, OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ADDIS)
.addReg(PPC::R11)
.addReg(PPC::R11)
@@ -1202,7 +1363,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
// ldu r12, lo16(LazyPtr - AnonSymbol)(r11)
// lwzu r12, lo16(LazyPtr - AnonSymbol)(r11)
- const MCExpr *SubLo16 = PPCMCExpr::CreateLo(Sub, isDarwin, OutContext);
+ const MCExpr *SubLo16 = PPCMCExpr::CreateLo(Sub, true, OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
.addReg(PPC::R12)
.addExpr(SubLo16).addExpr(SubLo16)
@@ -1248,7 +1409,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
// lis r11, ha16(LazyPtr)
const MCExpr *LazyPtrHa16 =
- PPCMCExpr::CreateHa(LazyPtrExpr, isDarwin, OutContext);
+ PPCMCExpr::CreateHa(LazyPtrExpr, true, OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LIS)
.addReg(PPC::R11)
.addExpr(LazyPtrHa16));
@@ -1256,7 +1417,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
// ldu r12, lo16(LazyPtr)(r11)
// lwzu r12, lo16(LazyPtr)(r11)
const MCExpr *LazyPtrLo16 =
- PPCMCExpr::CreateLo(LazyPtrExpr, isDarwin, OutContext);
+ PPCMCExpr::CreateLo(LazyPtrExpr, true, OutContext);
EmitToStreamer(OutStreamer, MCInstBuilder(isPPC64 ? PPC::LDU : PPC::LWZU)
.addReg(PPC::R12)
.addExpr(LazyPtrLo16).addExpr(LazyPtrLo16)
@@ -1287,8 +1448,7 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
- bool isPPC64 =
- TM.getSubtargetImpl()->getDataLayout()->getPointerSizeInBits() == 64;
+ bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
// Darwin/PPC always uses mach-o.
const TargetLoweringObjectFileMachO &TLOFMacho =
@@ -1383,13 +1543,12 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
/// for a MachineFunction to the given output stream, in a format that the
/// Darwin assembler can deal with.
///
-static AsmPrinter *createPPCAsmPrinterPass(TargetMachine &tm,
- MCStreamer &Streamer) {
- const PPCSubtarget *Subtarget = &tm.getSubtarget<PPCSubtarget>();
-
- if (Subtarget->isDarwin())
- return new PPCDarwinAsmPrinter(tm, Streamer);
- return new PPCLinuxAsmPrinter(tm, Streamer);
+static AsmPrinter *
+createPPCAsmPrinterPass(TargetMachine &tm,
+ std::unique_ptr<MCStreamer> &&Streamer) {
+ if (Triple(tm.getTargetTriple()).isMacOSX())
+ return new PPCDarwinAsmPrinter(tm, std::move(Streamer));
+ return new PPCLinuxAsmPrinter(tm, std::move(Streamer));
}
// Force static initialization.
generated by cgit v1.1 at 2024-05-18 01:13:48 +0000