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freebsd-skq/contrib/llvm/patches/patch-r270147-llvm-r197824-r213427-r213960.diff
Dimitry Andric 819c857f10 Add a few missing llvm/clang patches, update the other ones to be able 
to apply with the same patch options onto a fresh upstream llvm/clang
3.4.1 checkout, and use approximately the same header tempate for them.

MFC after:	3 days
2014-09-21 15:37:39 +00:00

1328 lines
54 KiB
Diff
Raw Blame History

Backport r197824, r213427 and r213960 from LLVM trunk:
r197824 | rdivacky | 2013-12-20 19:08:54 +0100 (Fri, 20 Dec 2013) | 2 lines
Implement initial-exec TLS for PPC32.
r213427 | hfinkel | 2014-07-19 01:29:49 +0200 (Sat, 19 Jul 2014) | 7 lines
[PowerPC] 32-bit ELF PIC support
This adds initial support for PPC32 ELF PIC (Position Independent Code; the
-fPIC variety), thus rectifying a long-standing deficiency in the PowerPC
backend.
Patch by Justin Hibbits!
r213960 | hfinkel | 2014-07-25 19:47:22 +0200 (Fri, 25 Jul 2014) | 3 lines
[PowerPC] Support TLS on PPC32/ELF
Patch by Justin Hibbits!
Introduced here: http://svnweb.freebsd.org/changeset/base/270147
Index: include/llvm/Support/ELF.h
===================================================================
--- include/llvm/Support/ELF.h (revision 270019)
+++ include/llvm/Support/ELF.h (working copy)
@@ -437,6 +437,7 @@
R_PPC_GOT16_LO = 15,
R_PPC_GOT16_HI = 16,
R_PPC_GOT16_HA = 17,
+ R_PPC_PLTREL24 = 18,
R_PPC_REL32 = 26,
R_PPC_TLS = 67,
R_PPC_DTPMOD32 = 68,
Index: lib/Object/ELF.cpp
===================================================================
--- lib/Object/ELF.cpp (revision 270019)
+++ lib/Object/ELF.cpp (working copy)
@@ -507,6 +507,7 @@
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_LO);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HI);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_GOT16_HA);
+ LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_PLTREL24);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TLS);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_DTPMOD32);
Index: lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
===================================================================
--- lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp (revision 270019)
+++ lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp (working copy)
@@ -18,6 +18,7 @@
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetOpcodes.h"
@@ -294,10 +295,16 @@
void PPCInstPrinter::printTLSCall(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
- printBranchOperand(MI, OpNo, O);
+ // On PPC64, VariantKind is VK_None, but on PPC32, it's VK_PLT, and it must
+ // come at the _end_ of the expression.
+ const MCOperand &Op = MI->getOperand(OpNo);
+ const MCSymbolRefExpr &refExp = cast<MCSymbolRefExpr>(*Op.getExpr());
+ O << refExp.getSymbol().getName();
O << '(';
printOperand(MI, OpNo+1, O);
O << ')';
+ if (refExp.getKind() != MCSymbolRefExpr::VK_None)
+ O << '@' << MCSymbolRefExpr::getVariantKindName(refExp.getKind());
}
Index: lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
===================================================================
--- lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp (revision 270019)
+++ lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp (working copy)
@@ -64,7 +64,15 @@
llvm_unreachable("Unimplemented");
case PPC::fixup_ppc_br24:
case PPC::fixup_ppc_br24abs:
- Type = ELF::R_PPC_REL24;
+ switch (Modifier) {
+ default: llvm_unreachable("Unsupported Modifier");
+ case MCSymbolRefExpr::VK_None:
+ Type = ELF::R_PPC_REL24;
+ break;
+ case MCSymbolRefExpr::VK_PLT:
+ Type = ELF::R_PPC_PLTREL24;
+ break;
+ }
break;
case PPC::fixup_ppc_brcond14:
case PPC::fixup_ppc_brcond14abs:
@@ -205,7 +213,10 @@
Type = ELF::R_PPC64_DTPREL16_HIGHESTA;
break;
case MCSymbolRefExpr::VK_PPC_GOT_TLSGD:
- Type = ELF::R_PPC64_GOT_TLSGD16;
+ if (is64Bit())
+ Type = ELF::R_PPC64_GOT_TLSGD16;
+ else
+ Type = ELF::R_PPC_GOT_TLSGD16;
break;
case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO:
Type = ELF::R_PPC64_GOT_TLSGD16_LO;
@@ -217,7 +228,10 @@
Type = ELF::R_PPC64_GOT_TLSGD16_HA;
break;
case MCSymbolRefExpr::VK_PPC_GOT_TLSLD:
- Type = ELF::R_PPC64_GOT_TLSLD16;
+ if (is64Bit())
+ Type = ELF::R_PPC64_GOT_TLSLD16;
+ else
+ Type = ELF::R_PPC_GOT_TLSLD16;
break;
case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO:
Type = ELF::R_PPC64_GOT_TLSLD16_LO;
@@ -313,13 +327,22 @@
switch (Modifier) {
default: llvm_unreachable("Unsupported Modifier");
case MCSymbolRefExpr::VK_PPC_TLSGD:
- Type = ELF::R_PPC64_TLSGD;
+ if (is64Bit())
+ Type = ELF::R_PPC64_TLSGD;
+ else
+ Type = ELF::R_PPC_TLSGD;
break;
case MCSymbolRefExpr::VK_PPC_TLSLD:
- Type = ELF::R_PPC64_TLSLD;
+ if (is64Bit())
+ Type = ELF::R_PPC64_TLSLD;
+ else
+ Type = ELF::R_PPC_TLSLD;
break;
case MCSymbolRefExpr::VK_PPC_TLS:
- Type = ELF::R_PPC64_TLS;
+ if (is64Bit())
+ Type = ELF::R_PPC64_TLS;
+ else
+ Type = ELF::R_PPC_TLS;
break;
}
break;
Index: lib/Target/PowerPC/PPC.h
===================================================================
--- lib/Target/PowerPC/PPC.h (revision 270019)
+++ lib/Target/PowerPC/PPC.h (working copy)
@@ -53,10 +53,11 @@
// PPC Specific MachineOperand flags.
MO_NO_FLAG,
- /// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the
- /// reference is actually to the "FOO$stub" symbol. This is used for calls
- /// and jumps to external functions on Tiger and earlier.
- MO_DARWIN_STUB = 1,
+ /// MO_PLT_OR_STUB - On a symbol operand "FOO", this indicates that the
+ /// reference is actually to the "FOO$stub" or "FOO@plt" symbol. This is
+ /// used for calls and jumps to external functions on Tiger and earlier, and
+ /// for PIC calls on Linux and ELF systems.
+ MO_PLT_OR_STUB = 1,
/// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
/// the function's picbase, e.g. lo16(symbol-picbase).
Index: lib/Target/PowerPC/PPCAsmPrinter.cpp
===================================================================
--- lib/Target/PowerPC/PPCAsmPrinter.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCAsmPrinter.cpp (working copy)
@@ -19,6 +19,7 @@
#define DEBUG_TYPE "asmprinter"
#include "PPC.h"
#include "InstPrinter/PPCInstPrinter.h"
+#include "PPCMachineFunctionInfo.h"
#include "MCTargetDesc/PPCPredicates.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "PPCSubtarget.h"
@@ -29,6 +30,7 @@
#include "llvm/ADT/StringExtras.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
@@ -100,6 +102,7 @@
}
bool doFinalization(Module &M);
+ void EmitStartOfAsmFile(Module &M);
virtual void EmitFunctionEntryLabel();
@@ -325,6 +328,7 @@
///
void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCInst TmpInst;
+ bool isPPC64 = Subtarget.isPPC64();
// Lower multi-instruction pseudo operations.
switch (MI->getOpcode()) {
@@ -349,6 +353,66 @@
OutStreamer.EmitLabel(PICBase);
return;
}
+ case PPC::GetGBRO: {
+ // Get the offset from the GOT Base Register to the GOT
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+ MCSymbol *PICOffset = MF->getInfo<PPCFunctionInfo>()->getPICOffsetSymbol();
+ TmpInst.setOpcode(PPC::LWZ);
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(PICOffset, MCSymbolRefExpr::VK_None, OutContext);
+ const MCExpr *PB =
+ MCSymbolRefExpr::Create(MF->getPICBaseSymbol(),
+ MCSymbolRefExpr::VK_None,
+ OutContext);
+ const MCOperand MO = TmpInst.getOperand(1);
+ TmpInst.getOperand(1) = MCOperand::CreateExpr(MCBinaryExpr::CreateSub(Exp,
+ PB,
+ OutContext));
+ TmpInst.addOperand(MO);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ case PPC::UpdateGBR: {
+ // Update the GOT Base Register to point to the GOT. It may be possible to
+ // merge this with the PPC::GetGBRO, doing it all in one step.
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+ TmpInst.setOpcode(PPC::ADD4);
+ TmpInst.addOperand(TmpInst.getOperand(0));
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ case PPC::LWZtoc: {
+ // Transform %X3 = LWZtoc <ga:@min1>, %X2
+ LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
+
+ // Change the opcode to LWZ, and the global address operand to be a
+ // reference to the GOT entry we will synthesize later.
+ TmpInst.setOpcode(PPC::LWZ);
+ const MachineOperand &MO = MI->getOperand(1);
+
+ // Map symbol -> label of TOC entry
+ assert(MO.isGlobal() || MO.isCPI() || MO.isJTI());
+ MCSymbol *MOSymbol = NULL;
+ if (MO.isGlobal())
+ MOSymbol = getSymbol(MO.getGlobal());
+ else if (MO.isCPI())
+ MOSymbol = GetCPISymbol(MO.getIndex());
+ else if (MO.isJTI())
+ MOSymbol = GetJTISymbol(MO.getIndex());
+
+ MCSymbol *TOCEntry = lookUpOrCreateTOCEntry(MOSymbol);
+
+ const MCExpr *Exp =
+ MCSymbolRefExpr::Create(TOCEntry, MCSymbolRefExpr::VK_None,
+ OutContext);
+ const MCExpr *PB =
+ MCSymbolRefExpr::Create(OutContext.GetOrCreateSymbol(Twine(".L.TOC.")),
+ OutContext);
+ Exp = MCBinaryExpr::CreateSub(Exp, PB, OutContext);
+ TmpInst.getOperand(1) = MCOperand::CreateExpr(Exp);
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
case PPC::LDtocJTI:
case PPC::LDtocCPT:
case PPC::LDtoc: {
@@ -518,12 +582,13 @@
.addExpr(SymGotTprel));
return;
}
- case PPC::LDgotTprelL: {
+ case PPC::LDgotTprelL:
+ case PPC::LDgotTprelL32: {
// Transform %Xd = LDgotTprelL <ga:@sym>, %Xs
LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
// Change the opcode to LD.
- TmpInst.setOpcode(PPC::LD);
+ TmpInst.setOpcode(isPPC64 ? PPC::LD : PPC::LWZ);
const MachineOperand &MO = MI->getOperand(1);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -534,6 +599,52 @@
OutStreamer.EmitInstruction(TmpInst);
return;
}
+
+ case PPC::PPC32PICGOT: {
+ MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
+ MCSymbol *GOTRef = OutContext.CreateTempSymbol();
+ MCSymbol *NextInstr = OutContext.CreateTempSymbol();
+
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL)
+ // FIXME: We would like an efficient form for this, so we don't have to do
+ // a lot of extra uniquing.
+ .addExpr(MCSymbolRefExpr::Create(NextInstr, OutContext)));
+ const MCExpr *OffsExpr =
+ MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(GOTSymbol, OutContext),
+ MCSymbolRefExpr::Create(GOTRef, OutContext),
+ OutContext);
+ OutStreamer.EmitLabel(GOTRef);
+ OutStreamer.EmitValue(OffsExpr, 4);
+ OutStreamer.EmitLabel(NextInstr);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::MFLR)
+ .addReg(MI->getOperand(0).getReg()));
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::LWZ)
+ .addReg(MI->getOperand(1).getReg())
+ .addImm(0)
+ .addReg(MI->getOperand(0).getReg()));
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADD4)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addReg(MI->getOperand(0).getReg()));
+ return;
+ }
+ case PPC::PPC32GOT: {
+ MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
+ const MCExpr *SymGotTlsL =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_LO,
+ OutContext);
+ const MCExpr *SymGotTlsHA =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::LI)
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsL));
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsHA));
+ return;
+ }
case PPC::ADDIStlsgdHA: {
// Transform: %Xd = ADDIStlsgdHA %X2, <ga:@sym>
// Into: %Xd = ADDIS8 %X2, sym@got@tlsgd@ha
@@ -550,31 +661,42 @@
.addExpr(SymGotTlsGD));
return;
}
- case PPC::ADDItlsgdL: {
+ case PPC::ADDItlsgdL:
// Transform: %Xd = ADDItlsgdL %Xs, <ga:@sym>
// Into: %Xd = ADDI8 %Xs, sym@got@tlsgd@l
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::ADDItlsgdL32: {
+ // Transform: %Rd = ADDItlsgdL32 %Rs, <ga:@sym>
+ // Into: %Rd = ADDI %Rs, sym@got@tlsgd
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
const MCExpr *SymGotTlsGD =
- MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO,
+ MCSymbolRefExpr::Create(MOSymbol, Subtarget.isPPC64() ?
+ MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO :
+ MCSymbolRefExpr::VK_PPC_GOT_TLSGD,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
- .addReg(MI->getOperand(0).getReg())
- .addReg(MI->getOperand(1).getReg())
- .addExpr(SymGotTlsGD));
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(1).getReg())
+ .addExpr(SymGotTlsGD));
return;
}
- case PPC::GETtlsADDR: {
+ case PPC::GETtlsADDR:
// Transform: %X3 = GETtlsADDR %X3, <ga:@sym>
// Into: BL8_NOP_TLS __tls_get_addr(sym@tlsgd)
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::GETtlsADDR32: {
+ // Transform: %R3 = GETtlsADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym@tlsgd)@PLT
StringRef Name = "__tls_get_addr";
MCSymbol *TlsGetAddr = OutContext.GetOrCreateSymbol(Name);
+ MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
+
+ if (!Subtarget.isPPC64() && !Subtarget.isDarwin() &&
+ TM.getRelocationModel() == Reloc::PIC_)
+ Kind = MCSymbolRefExpr::VK_PLT;
const MCSymbolRefExpr *TlsRef =
- MCSymbolRefExpr::Create(TlsGetAddr, MCSymbolRefExpr::VK_None, OutContext);
+ MCSymbolRefExpr::Create(TlsGetAddr, Kind, OutContext);
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -581,7 +703,8 @@
const MCExpr *SymVar =
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TLSGD,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL8_NOP_TLS)
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ?
+ PPC::BL8_NOP_TLS : PPC::BL_TLS)
.addExpr(TlsRef)
.addExpr(SymVar));
return;
@@ -602,31 +725,44 @@
.addExpr(SymGotTlsLD));
return;
}
- case PPC::ADDItlsldL: {
+ case PPC::ADDItlsldL:
// Transform: %Xd = ADDItlsldL %Xs, <ga:@sym>
// Into: %Xd = ADDI8 %Xs, sym@got@tlsld@l
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::ADDItlsldL32: {
+ // Transform: %Rd = ADDItlsldL32 %Rs, <ga:@sym>
+ // Into: %Rd = ADDI %Rs, sym@got@tlsld
+
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
const MCExpr *SymGotTlsLD =
- MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO,
+ MCSymbolRefExpr::Create(MOSymbol, Subtarget.isPPC64() ?
+ MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO :
+ MCSymbolRefExpr::VK_PPC_GOT_TLSLD,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
.addReg(MI->getOperand(0).getReg())
.addReg(MI->getOperand(1).getReg())
.addExpr(SymGotTlsLD));
return;
}
- case PPC::GETtlsldADDR: {
+ case PPC::GETtlsldADDR:
// Transform: %X3 = GETtlsldADDR %X3, <ga:@sym>
// Into: BL8_NOP_TLS __tls_get_addr(sym@tlsld)
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::GETtlsldADDR32: {
+ // Transform: %R3 = GETtlsldADDR32 %R3, <ga:@sym>
+ // Into: BL_TLS __tls_get_addr(sym@tlsld)@PLT
StringRef Name = "__tls_get_addr";
MCSymbol *TlsGetAddr = OutContext.GetOrCreateSymbol(Name);
+ MCSymbolRefExpr::VariantKind Kind = MCSymbolRefExpr::VK_None;
+
+ if (!Subtarget.isPPC64() && !Subtarget.isDarwin() &&
+ TM.getRelocationModel() == Reloc::PIC_)
+ Kind = MCSymbolRefExpr::VK_PLT;
+
const MCSymbolRefExpr *TlsRef =
- MCSymbolRefExpr::Create(TlsGetAddr, MCSymbolRefExpr::VK_None, OutContext);
+ MCSymbolRefExpr::Create(TlsGetAddr, Kind, OutContext);
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -633,15 +769,19 @@
const MCExpr *SymVar =
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_TLSLD,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::BL8_NOP_TLS)
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ?
+ PPC::BL8_NOP_TLS : PPC::BL_TLS)
.addExpr(TlsRef)
.addExpr(SymVar));
return;
}
- case PPC::ADDISdtprelHA: {
+ case PPC::ADDISdtprelHA:
// Transform: %Xd = ADDISdtprelHA %X3, <ga:@sym>
// Into: %Xd = ADDIS8 %X3, sym@dtprel@ha
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::ADDISdtprelHA32: {
+ // Transform: %Rd = ADDISdtprelHA32 %R3, <ga:@sym>
+ // Into: %Rd = ADDIS %R3, sym@dtprel@ha
+
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -648,16 +788,18 @@
const MCExpr *SymDtprel =
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_HA,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS8)
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDIS8 : PPC::ADDIS)
.addReg(MI->getOperand(0).getReg())
.addReg(PPC::X3)
.addExpr(SymDtprel));
return;
}
- case PPC::ADDIdtprelL: {
+ case PPC::ADDIdtprelL:
// Transform: %Xd = ADDIdtprelL %Xs, <ga:@sym>
// Into: %Xd = ADDI8 %Xs, sym@dtprel@l
- assert(Subtarget.isPPC64() && "Not supported for 32-bit PowerPC");
+ case PPC::ADDIdtprelL32: {
+ // Transform: %Rd = ADDIdtprelL32 %Rs, <ga:@sym>
+ // Into: %Rd = ADDI %Rs, sym@dtprel@l
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -664,7 +806,7 @@
const MCExpr *SymDtprel =
MCSymbolRefExpr::Create(MOSymbol, MCSymbolRefExpr::VK_PPC_DTPREL_LO,
OutContext);
- OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDI8)
+ OutStreamer.EmitInstruction(MCInstBuilder(Subtarget.isPPC64() ? PPC::ADDI8 : PPC::ADDI)
.addReg(MI->getOperand(0).getReg())
.addReg(MI->getOperand(1).getReg())
.addExpr(SymDtprel));
@@ -726,9 +868,60 @@
OutStreamer.EmitInstruction(TmpInst);
}
+void PPCLinuxAsmPrinter::EmitStartOfAsmFile(Module &M) {
+ if (Subtarget.isPPC64() || TM.getRelocationModel() != Reloc::PIC_)
+ return AsmPrinter::EmitStartOfAsmFile(M);
+
+ // FIXME: The use of .got2 assumes large GOT model (-fPIC), which is not
+ // optimal for some cases. We should consider supporting small model (-fpic)
+ // as well in the future.
+ assert(TM.getCodeModel() != CodeModel::Small &&
+ "Small code model PIC is currently unsupported.");
+ OutStreamer.SwitchSection(OutContext.getELFSection(".got2",
+ ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
+ SectionKind::getReadOnly()));
+
+ MCSymbol *TOCSym = OutContext.GetOrCreateSymbol(Twine(".L.TOC."));
+ MCSymbol *CurrentPos = OutContext.CreateTempSymbol();
+
+ OutStreamer.EmitLabel(CurrentPos);
+
+ // The GOT pointer points to the middle of the GOT, in order to reference the
+ // entire 64kB range. 0x8000 is the midpoint.
+ const MCExpr *tocExpr =
+ MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(CurrentPos, OutContext),
+ MCConstantExpr::Create(0x8000, OutContext),
+ OutContext);
+
+ OutStreamer.EmitAssignment(TOCSym, tocExpr);
+
+ OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
+}
+
void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
- if (!Subtarget.isPPC64()) // linux/ppc32 - Normal entry label.
+ // linux/ppc32 - Normal entry label.
+ if (!Subtarget.isPPC64() && TM.getRelocationModel() != Reloc::PIC_)
return AsmPrinter::EmitFunctionEntryLabel();
+
+ if (!Subtarget.isPPC64()) {
+ const PPCFunctionInfo *PPCFI = MF->getInfo<PPCFunctionInfo>();
+ if (PPCFI->usesPICBase()) {
+ MCSymbol *RelocSymbol = PPCFI->getPICOffsetSymbol();
+ MCSymbol *PICBase = MF->getPICBaseSymbol();
+ OutStreamer.EmitLabel(RelocSymbol);
+
+ const MCExpr *OffsExpr =
+ MCBinaryExpr::CreateSub(
+ MCSymbolRefExpr::Create(OutContext.GetOrCreateSymbol(Twine(".L.TOC.")),
+ OutContext),
+ MCSymbolRefExpr::Create(PICBase, OutContext),
+ OutContext);
+ OutStreamer.EmitValue(OffsExpr, 4);
+ OutStreamer.EmitLabel(CurrentFnSym);
+ return;
+ } else
+ return AsmPrinter::EmitFunctionEntryLabel();
+ }
// Emit an official procedure descriptor.
MCSectionSubPair Current = OutStreamer.getCurrentSection();
@@ -768,10 +961,17 @@
PPCTargetStreamer &TS =
static_cast<PPCTargetStreamer &>(OutStreamer.getTargetStreamer());
- if (isPPC64 && !TOC.empty()) {
- const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".toc",
+ if (!TOC.empty()) {
+ 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());
OutStreamer.SwitchSection(Section);
for (MapVector<MCSymbol*, MCSymbol*>::iterator I = TOC.begin(),
@@ -778,7 +978,10 @@
E = TOC.end(); I != E; ++I) {
OutStreamer.EmitLabel(I->second);
MCSymbol *S = OutContext.GetOrCreateSymbol(I->first->getName());
- TS.emitTCEntry(*S);
+ if (isPPC64)
+ TS.emitTCEntry(*S);
+ else
+ OutStreamer.EmitSymbolValue(S, 4);
}
}
Index: lib/Target/PowerPC/PPCFrameLowering.cpp
===================================================================
--- lib/Target/PowerPC/PPCFrameLowering.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCFrameLowering.cpp (working copy)
@@ -299,7 +299,7 @@
const PPCRegisterInfo *RegInfo =
static_cast<const PPCRegisterInfo*>(MF.getTarget().getRegisterInfo());
bool HasBP = RegInfo->hasBasePointer(MF);
- unsigned BPReg = HasBP ? (unsigned) PPC::R30 : FPReg;
+ unsigned BPReg = HasBP ? (unsigned) RegInfo->getBaseRegister(MF): FPReg;
unsigned BP8Reg = HasBP ? (unsigned) PPC::X30 : FPReg;
for (MachineFunction::iterator BI = MF.begin(), BE = MF.end();
@@ -344,6 +344,7 @@
DebugLoc dl;
bool needsFrameMoves = MMI.hasDebugInfo() ||
MF.getFunction()->needsUnwindTableEntry();
+ bool isPIC = MF.getTarget().getRelocationModel() == Reloc::PIC_;
// Get processor type.
bool isPPC64 = Subtarget.isPPC64();
@@ -387,7 +388,7 @@
bool HasBP = RegInfo->hasBasePointer(MF);
unsigned SPReg = isPPC64 ? PPC::X1 : PPC::R1;
- unsigned BPReg = isPPC64 ? PPC::X30 : PPC::R30;
+ unsigned BPReg = RegInfo->getBaseRegister(MF);
unsigned FPReg = isPPC64 ? PPC::X31 : PPC::R31;
unsigned LRReg = isPPC64 ? PPC::LR8 : PPC::LR;
unsigned ScratchReg = isPPC64 ? PPC::X0 : PPC::R0;
@@ -442,7 +443,9 @@
BPOffset = FFI->getObjectOffset(BPIndex);
} else {
BPOffset =
- PPCFrameLowering::getBasePointerSaveOffset(isPPC64, isDarwinABI);
+ PPCFrameLowering::getBasePointerSaveOffset(isPPC64,
+ isDarwinABI,
+ isPIC);
}
}
@@ -675,6 +678,7 @@
// Get the ABI.
bool isDarwinABI = Subtarget.isDarwinABI();
bool isSVR4ABI = Subtarget.isSVR4ABI();
+ bool isPIC = MF.getTarget().getRelocationModel() == Reloc::PIC_;
// Check if the link register (LR) has been saved.
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
@@ -685,7 +689,7 @@
bool HasBP = RegInfo->hasBasePointer(MF);
unsigned SPReg = isPPC64 ? PPC::X1 : PPC::R1;
- unsigned BPReg = isPPC64 ? PPC::X30 : PPC::R30;
+ unsigned BPReg = RegInfo->getBaseRegister(MF);
unsigned FPReg = isPPC64 ? PPC::X31 : PPC::R31;
unsigned ScratchReg = isPPC64 ? PPC::X0 : PPC::R0;
unsigned TempReg = isPPC64 ? PPC::X12 : PPC::R12; // another scratch reg
@@ -725,7 +729,9 @@
BPOffset = FFI->getObjectOffset(BPIndex);
} else {
BPOffset =
- PPCFrameLowering::getBasePointerSaveOffset(isPPC64, isDarwinABI);
+ PPCFrameLowering::getBasePointerSaveOffset(isPPC64,
+ isDarwinABI,
+ isPIC);
}
}
@@ -902,6 +908,7 @@
int FPSI = FI->getFramePointerSaveIndex();
bool isPPC64 = Subtarget.isPPC64();
bool isDarwinABI = Subtarget.isDarwinABI();
+ bool isPIC = MF.getTarget().getRelocationModel() == Reloc::PIC_;
MachineFrameInfo *MFI = MF.getFrameInfo();
// If the frame pointer save index hasn't been defined yet.
@@ -916,7 +923,7 @@
int BPSI = FI->getBasePointerSaveIndex();
if (!BPSI && RegInfo->hasBasePointer(MF)) {
- int BPOffset = getBasePointerSaveOffset(isPPC64, isDarwinABI);
+ int BPOffset = getBasePointerSaveOffset(isPPC64, isDarwinABI, isPIC);
// Allocate the frame index for the base pointer save area.
BPSI = MFI->CreateFixedObject(isPPC64? 8 : 4, BPOffset, true);
// Save the result.
Index: lib/Target/PowerPC/PPCFrameLowering.h
===================================================================
--- lib/Target/PowerPC/PPCFrameLowering.h (revision 270019)
+++ lib/Target/PowerPC/PPCFrameLowering.h (working copy)
@@ -96,12 +96,14 @@
/// getBasePointerSaveOffset - Return the previous frame offset to save the
/// base pointer.
- static unsigned getBasePointerSaveOffset(bool isPPC64, bool isDarwinABI) {
+ static unsigned getBasePointerSaveOffset(bool isPPC64,
+ bool isDarwinABI,
+ bool isPIC) {
if (isDarwinABI)
return isPPC64 ? -16U : -8U;
// SVR4 ABI: First slot in the general register save area.
- return isPPC64 ? -16U : -8U;
+ return isPPC64 ? -16U : isPIC ? -12U : -8U;
}
/// getLinkageSize - Return the size of the PowerPC ABI linkage area.
Index: lib/Target/PowerPC/PPCISelDAGToDAG.cpp
===================================================================
--- lib/Target/PowerPC/PPCISelDAGToDAG.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCISelDAGToDAG.cpp (working copy)
@@ -15,6 +15,7 @@
#define DEBUG_TYPE "ppc-codegen"
#include "PPC.h"
#include "MCTargetDesc/PPCPredicates.h"
+#include "PPCMachineFunctionInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
@@ -261,9 +262,21 @@
DebugLoc dl;
if (PPCLowering.getPointerTy() == MVT::i32) {
- GlobalBaseReg = RegInfo->createVirtualRegister(&PPC::GPRC_NOR0RegClass);
+ if (PPCSubTarget.isTargetELF())
+ GlobalBaseReg = PPC::R30;
+ else
+ GlobalBaseReg =
+ RegInfo->createVirtualRegister(&PPC::GPRC_NOR0RegClass);
BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MovePCtoLR));
BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MFLR), GlobalBaseReg);
+ if (PPCSubTarget.isTargetELF()) {
+ unsigned TempReg = RegInfo->createVirtualRegister(&PPC::GPRCRegClass);
+ BuildMI(FirstMBB, MBBI, dl,
+ TII.get(PPC::GetGBRO), TempReg).addReg(GlobalBaseReg);
+ BuildMI(FirstMBB, MBBI, dl,
+ TII.get(PPC::UpdateGBR)).addReg(GlobalBaseReg).addReg(TempReg);
+ MF->getInfo<PPCFunctionInfo>()->setUsesPICBase(true);
+ }
} else {
GlobalBaseReg = RegInfo->createVirtualRegister(&PPC::G8RC_NOX0RegClass);
BuildMI(FirstMBB, MBBI, dl, TII.get(PPC::MovePCtoLR8));
@@ -1260,7 +1273,13 @@
return CurDAG->SelectNodeTo(N, Reg, MVT::Other, Chain);
}
case PPCISD::TOC_ENTRY: {
- assert (PPCSubTarget.isPPC64() && "Only supported for 64-bit ABI");
+ if (PPCSubTarget.isSVR4ABI() && !PPCSubTarget.isPPC64()) {
+ SDValue GA = N->getOperand(0);
+ return CurDAG->getMachineNode(PPC::LWZtoc, dl, MVT::i32, GA,
+ N->getOperand(1));
+ }
+ assert (PPCSubTarget.isPPC64() &&
+ "Only supported for 64-bit ABI and 32-bit SVR4");
// For medium and large code model, we generate two instructions as
// described below. Otherwise we allow SelectCodeCommon to handle this,
@@ -1306,6 +1325,12 @@
return CurDAG->getMachineNode(PPC::ADDItocL, dl, MVT::i64,
SDValue(Tmp, 0), GA);
}
+ case PPCISD::PPC32_PICGOT: {
+ // Generate a PIC-safe GOT reference.
+ assert(!PPCSubTarget.isPPC64() && PPCSubTarget.isSVR4ABI() &&
+ "PPCISD::PPC32_PICGOT is only supported for 32-bit SVR4");
+ return CurDAG->SelectNodeTo(N, PPC::PPC32PICGOT, PPCLowering.getPointerTy(), MVT::i32);
+ }
case PPCISD::VADD_SPLAT: {
// This expands into one of three sequences, depending on whether
// the first operand is odd or even, positive or negative.
Index: lib/Target/PowerPC/PPCISelLowering.cpp
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCISelLowering.cpp (working copy)
@@ -670,6 +670,7 @@
case PPCISD::ADDIS_TOC_HA: return "PPCISD::ADDIS_TOC_HA";
case PPCISD::LD_TOC_L: return "PPCISD::LD_TOC_L";
case PPCISD::ADDI_TOC_L: return "PPCISD::ADDI_TOC_L";
+ case PPCISD::PPC32_GOT: return "PPCISD::PPC32_GOT";
case PPCISD::ADDIS_GOT_TPREL_HA: return "PPCISD::ADDIS_GOT_TPREL_HA";
case PPCISD::LD_GOT_TPREL_L: return "PPCISD::LD_GOT_TPREL_L";
case PPCISD::ADD_TLS: return "PPCISD::ADD_TLS";
@@ -1307,10 +1308,7 @@
HiOpFlags = PPCII::MO_HA;
LoOpFlags = PPCII::MO_LO;
- // Don't use the pic base if not in PIC relocation model. Or if we are on a
- // non-darwin platform. We don't support PIC on other platforms yet.
- bool isPIC = TM.getRelocationModel() == Reloc::PIC_ &&
- TM.getSubtarget<PPCSubtarget>().isDarwin();
+ bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
if (isPIC) {
HiOpFlags |= PPCII::MO_PIC_FLAG;
LoOpFlags |= PPCII::MO_PIC_FLAG;
@@ -1366,6 +1364,15 @@
unsigned MOHiFlag, MOLoFlag;
bool isPIC = GetLabelAccessInfo(DAG.getTarget(), MOHiFlag, MOLoFlag);
+
+ if (isPIC && PPCSubTarget.isSVR4ABI()) {
+ SDValue GA = DAG.getTargetConstantPool(C, PtrVT, CP->getAlignment(),
+ PPCII::MO_PIC_FLAG);
+ SDLoc DL(CP);
+ return DAG.getNode(PPCISD::TOC_ENTRY, SDLoc(CP), MVT::i32, GA,
+ DAG.getNode(PPCISD::GlobalBaseReg, DL, PtrVT));
+ }
+
SDValue CPIHi =
DAG.getTargetConstantPool(C, PtrVT, CP->getAlignment(), 0, MOHiFlag);
SDValue CPILo =
@@ -1387,6 +1394,15 @@
unsigned MOHiFlag, MOLoFlag;
bool isPIC = GetLabelAccessInfo(DAG.getTarget(), MOHiFlag, MOLoFlag);
+
+ if (isPIC && PPCSubTarget.isSVR4ABI()) {
+ SDValue GA = DAG.getTargetJumpTable(JT->getIndex(), PtrVT,
+ PPCII::MO_PIC_FLAG);
+ SDLoc DL(GA);
+ return DAG.getNode(PPCISD::TOC_ENTRY, SDLoc(JT), PtrVT, GA,
+ DAG.getNode(PPCISD::GlobalBaseReg, DL, PtrVT));
+ }
+
SDValue JTIHi = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MOHiFlag);
SDValue JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MOLoFlag);
return LowerLabelRef(JTIHi, JTILo, isPIC, DAG);
@@ -1400,6 +1416,7 @@
unsigned MOHiFlag, MOLoFlag;
bool isPIC = GetLabelAccessInfo(DAG.getTarget(), MOHiFlag, MOLoFlag);
+
SDValue TgtBAHi = DAG.getTargetBlockAddress(BA, PtrVT, 0, MOHiFlag);
SDValue TgtBALo = DAG.getTargetBlockAddress(BA, PtrVT, 0, MOLoFlag);
return LowerLabelRef(TgtBAHi, TgtBALo, isPIC, DAG);
@@ -1431,64 +1448,79 @@
return DAG.getNode(PPCISD::Lo, dl, PtrVT, TGALo, Hi);
}
- if (!is64bit)
- llvm_unreachable("only local-exec is currently supported for ppc32");
-
if (Model == TLSModel::InitialExec) {
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0);
SDValue TGATLS = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
PPCII::MO_TLS);
- SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
- SDValue TPOffsetHi = DAG.getNode(PPCISD::ADDIS_GOT_TPREL_HA, dl,
- PtrVT, GOTReg, TGA);
+ SDValue GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_GOT_TPREL_HA, dl,
+ PtrVT, GOTReg, TGA);
+ } else
+ GOTPtr = DAG.getNode(PPCISD::PPC32_GOT, dl, PtrVT);
SDValue TPOffset = DAG.getNode(PPCISD::LD_GOT_TPREL_L, dl,
- PtrVT, TGA, TPOffsetHi);
+ PtrVT, TGA, GOTPtr);
return DAG.getNode(PPCISD::ADD_TLS, dl, PtrVT, TPOffset, TGATLS);
}
if (Model == TLSModel::GeneralDynamic) {
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0);
- SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
- SDValue GOTEntryHi = DAG.getNode(PPCISD::ADDIS_TLSGD_HA, dl, PtrVT,
- GOTReg, TGA);
+ SDValue GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_TLSGD_HA, dl, PtrVT,
+ GOTReg, TGA);
+ } else {
+ GOTPtr = DAG.getNode(PPCISD::PPC32_PICGOT, dl, PtrVT);
+ }
SDValue GOTEntry = DAG.getNode(PPCISD::ADDI_TLSGD_L, dl, PtrVT,
- GOTEntryHi, TGA);
+ GOTPtr, TGA);
// We need a chain node, and don't have one handy. The underlying
// call has no side effects, so using the function entry node
// suffices.
SDValue Chain = DAG.getEntryNode();
- Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, GOTEntry);
- SDValue ParmReg = DAG.getRegister(PPC::X3, MVT::i64);
+ Chain = DAG.getCopyToReg(Chain, dl,
+ is64bit ? PPC::X3 : PPC::R3, GOTEntry);
+ SDValue ParmReg = DAG.getRegister(is64bit ? PPC::X3 : PPC::R3,
+ is64bit ? MVT::i64 : MVT::i32);
SDValue TLSAddr = DAG.getNode(PPCISD::GET_TLS_ADDR, dl,
PtrVT, ParmReg, TGA);
// The return value from GET_TLS_ADDR really is in X3 already, but
// some hacks are needed here to tie everything together. The extra
// copies dissolve during subsequent transforms.
- Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, TLSAddr);
- return DAG.getCopyFromReg(Chain, dl, PPC::X3, PtrVT);
+ Chain = DAG.getCopyToReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, TLSAddr);
+ return DAG.getCopyFromReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, PtrVT);
}
if (Model == TLSModel::LocalDynamic) {
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0);
- SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
- SDValue GOTEntryHi = DAG.getNode(PPCISD::ADDIS_TLSLD_HA, dl, PtrVT,
- GOTReg, TGA);
+ SDValue GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_TLSLD_HA, dl, PtrVT,
+ GOTReg, TGA);
+ } else {
+ GOTPtr = DAG.getNode(PPCISD::PPC32_PICGOT, dl, PtrVT);
+ }
SDValue GOTEntry = DAG.getNode(PPCISD::ADDI_TLSLD_L, dl, PtrVT,
- GOTEntryHi, TGA);
+ GOTPtr, TGA);
// We need a chain node, and don't have one handy. The underlying
// call has no side effects, so using the function entry node
// suffices.
SDValue Chain = DAG.getEntryNode();
- Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, GOTEntry);
- SDValue ParmReg = DAG.getRegister(PPC::X3, MVT::i64);
+ Chain = DAG.getCopyToReg(Chain, dl,
+ is64bit ? PPC::X3 : PPC::R3, GOTEntry);
+ SDValue ParmReg = DAG.getRegister(is64bit ? PPC::X3 : PPC::R3,
+ is64bit ? MVT::i64 : MVT::i32);
SDValue TLSAddr = DAG.getNode(PPCISD::GET_TLSLD_ADDR, dl,
PtrVT, ParmReg, TGA);
// The return value from GET_TLSLD_ADDR really is in X3 already, but
// some hacks are needed here to tie everything together. The extra
// copies dissolve during subsequent transforms.
- Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, TLSAddr);
+ Chain = DAG.getCopyToReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, TLSAddr);
SDValue DtvOffsetHi = DAG.getNode(PPCISD::ADDIS_DTPREL_HA, dl, PtrVT,
Chain, ParmReg, TGA);
return DAG.getNode(PPCISD::ADDI_DTPREL_L, dl, PtrVT, DtvOffsetHi, TGA);
@@ -1515,6 +1547,14 @@
unsigned MOHiFlag, MOLoFlag;
bool isPIC = GetLabelAccessInfo(DAG.getTarget(), MOHiFlag, MOLoFlag, GV);
+ if (isPIC && PPCSubTarget.isSVR4ABI()) {
+ SDValue GA = DAG.getTargetGlobalAddress(GV, DL, PtrVT,
+ GSDN->getOffset(),
+ PPCII::MO_PIC_FLAG);
+ return DAG.getNode(PPCISD::TOC_ENTRY, DL, MVT::i32, GA,
+ DAG.getNode(PPCISD::GlobalBaseReg, DL, MVT::i32));
+ }
+
SDValue GAHi =
DAG.getTargetGlobalAddress(GV, DL, PtrVT, GSDN->getOffset(), MOHiFlag);
SDValue GALo =
@@ -3214,15 +3254,18 @@
// far-call stubs may be outside relocation limits for a BL instruction.
if (!DAG.getTarget().getSubtarget<PPCSubtarget>().isJITCodeModel()) {
unsigned OpFlags = 0;
- if (DAG.getTarget().getRelocationModel() != Reloc::Static &&
+ if ((DAG.getTarget().getRelocationModel() != Reloc::Static &&
(PPCSubTarget.getTargetTriple().isMacOSX() &&
PPCSubTarget.getTargetTriple().isMacOSXVersionLT(10, 5)) &&
(G->getGlobal()->isDeclaration() ||
- G->getGlobal()->isWeakForLinker())) {
+ G->getGlobal()->isWeakForLinker())) ||
+ (PPCSubTarget.isTargetELF() && !isPPC64 &&
+ !G->getGlobal()->hasLocalLinkage() &&
+ DAG.getTarget().getRelocationModel() == Reloc::PIC_)) {
// PC-relative references to external symbols should go through $stub,
// unless we're building with the leopard linker or later, which
// automatically synthesizes these stubs.
- OpFlags = PPCII::MO_DARWIN_STUB;
+ OpFlags = PPCII::MO_PLT_OR_STUB;
}
// If the callee is a GlobalAddress/ExternalSymbol node (quite common,
@@ -3244,7 +3287,7 @@
// PC-relative references to external symbols should go through $stub,
// unless we're building with the leopard linker or later, which
// automatically synthesizes these stubs.
- OpFlags = PPCII::MO_DARWIN_STUB;
+ OpFlags = PPCII::MO_PLT_OR_STUB;
}
Callee = DAG.getTargetExternalSymbol(S->getSymbol(), Callee.getValueType(),
@@ -6255,7 +6298,10 @@
// Since FP is only updated here but NOT referenced, it's treated as GPR.
unsigned FP = (PVT == MVT::i64) ? PPC::X31 : PPC::R31;
unsigned SP = (PVT == MVT::i64) ? PPC::X1 : PPC::R1;
- unsigned BP = (PVT == MVT::i64) ? PPC::X30 : PPC::R30;
+ unsigned BP = (PVT == MVT::i64) ? PPC::X30 :
+ (PPCSubTarget.isSVR4ABI() &&
+ MF->getTarget().getRelocationModel() == Reloc::PIC_ ?
+ PPC::R29 : PPC::R30);
MachineInstrBuilder MIB;
Index: lib/Target/PowerPC/PPCISelLowering.h
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.h (revision 270019)
+++ lib/Target/PowerPC/PPCISelLowering.h (working copy)
@@ -177,6 +177,12 @@
CR6SET,
CR6UNSET,
+ PPC32_GOT,
+
+ /// GPRC = address of _GLOBAL_OFFSET_TABLE_. Used by general dynamic and
+ /// local dynamic TLS on PPC32.
+ PPC32_PICGOT,
+
/// G8RC = ADDIS_GOT_TPREL_HA %X2, Symbol - Used by the initial-exec
/// TLS model, produces an ADDIS8 instruction that adds the GOT
/// base to sym\@got\@tprel\@ha.
Index: lib/Target/PowerPC/PPCInstr64Bit.td
===================================================================
--- lib/Target/PowerPC/PPCInstr64Bit.td (revision 270019)
+++ lib/Target/PowerPC/PPCInstr64Bit.td (working copy)
@@ -36,10 +36,6 @@
def tocentry : Operand<iPTR> {
let MIOperandInfo = (ops i64imm:$imm);
}
-def PPCTLSRegOperand : AsmOperandClass {
- let Name = "TLSReg"; let PredicateMethod = "isTLSReg";
- let RenderMethod = "addTLSRegOperands";
-}
def tlsreg : Operand<i64> {
let EncoderMethod = "getTLSRegEncoding";
let ParserMatchClass = PPCTLSRegOperand;
Index: lib/Target/PowerPC/PPCInstrInfo.td
===================================================================
--- lib/Target/PowerPC/PPCInstrInfo.td (revision 270019)
+++ lib/Target/PowerPC/PPCInstrInfo.td (working copy)
@@ -57,6 +57,9 @@
SDTCisPtrTy<0>, SDTCisVT<1, i32>
]>;
+def tocentry32 : Operand<iPTR> {
+ let MIOperandInfo = (ops i32imm:$imm);
+}
//===----------------------------------------------------------------------===//
// PowerPC specific DAG Nodes.
@@ -99,6 +102,8 @@
def PPCvmaddfp : SDNode<"PPCISD::VMADDFP", SDTFPTernaryOp, []>;
def PPCvnmsubfp : SDNode<"PPCISD::VNMSUBFP", SDTFPTernaryOp, []>;
+def PPCppc32GOT : SDNode<"PPCISD::PPC32_GOT", SDTIntLeaf, []>;
+
def PPCaddisGotTprelHA : SDNode<"PPCISD::ADDIS_GOT_TPREL_HA", SDTIntBinOp>;
def PPCldGotTprelL : SDNode<"PPCISD::LD_GOT_TPREL_L", SDTIntBinOp,
[SDNPMayLoad]>;
@@ -555,6 +560,20 @@
def memr : Operand<iPTR> {
let MIOperandInfo = (ops ptr_rc:$ptrreg);
}
+def PPCTLSRegOperand : AsmOperandClass {
+ let Name = "TLSReg"; let PredicateMethod = "isTLSReg";
+ let RenderMethod = "addTLSRegOperands";
+}
+def tlsreg32 : Operand<i32> {
+ let EncoderMethod = "getTLSRegEncoding";
+ let ParserMatchClass = PPCTLSRegOperand;
+}
+def tlsgd32 : Operand<i32> {}
+def tlscall32 : Operand<i32> {
+ let PrintMethod = "printTLSCall";
+ let MIOperandInfo = (ops calltarget:$func, tlsgd32:$sym);
+ let EncoderMethod = "getTLSCallEncoding";
+}
// PowerPC Predicate operand.
def pred : Operand<OtherVT> {
@@ -1003,6 +1022,8 @@
"bla $func", BrB, [(PPCcall (i32 imm:$func))]>;
let isCodeGenOnly = 1 in {
+ def BL_TLS : IForm<18, 0, 1, (outs), (ins tlscall32:$func),
+ "bl $func", BrB, []>;
def BCCL : BForm<16, 0, 1, (outs), (ins pred:$cond, condbrtarget:$dst),
"b${cond:cc}l${cond:pm} ${cond:reg}, $dst">;
def BCCLA : BForm<16, 1, 1, (outs), (ins pred:$cond, abscondbrtarget:$dst),
@@ -1995,6 +2016,10 @@
defm ADD4 : XOForm_1r<31, 266, 0, (outs gprc:$rT), (ins gprc:$rA, gprc:$rB),
"add", "$rT, $rA, $rB", IntSimple,
[(set i32:$rT, (add i32:$rA, i32:$rB))]>;
+let isCodeGenOnly = 1 in
+def ADD4TLS : XOForm_1<31, 266, 0, (outs gprc:$rT), (ins gprc:$rA, tlsreg32:$rB),
+ "add $rT, $rA, $rB", IntSimple,
+ [(set i32:$rT, (add i32:$rA, tglobaltlsaddr:$rB))]>;
defm ADDC : XOForm_1rc<31, 10, 0, (outs gprc:$rT), (ins gprc:$rA, gprc:$rB),
"addc", "$rT, $rA, $rB", IntGeneral,
[(set i32:$rT, (addc i32:$rA, i32:$rB))]>,
@@ -2260,6 +2285,61 @@
def : Pat<(add i32:$in, (PPChi tblockaddress:$g, 0)),
(ADDIS $in, tblockaddress:$g)>;
+// Support for Position-independent code
+def LWZtoc: Pseudo<(outs gprc:$rD), (ins tocentry32:$disp, gprc:$reg),
+ "#LWZtoc",
+ [(set i32:$rD,
+ (PPCtoc_entry tglobaladdr:$disp, i32:$reg))]>;
+// Get Global (GOT) Base Register offset, from the word immediately preceding
+// the function label.
+def GetGBRO: Pseudo<(outs gprc:$rT), (ins gprc:$rI), "#GetGBRO", []>;
+// Update the Global(GOT) Base Register with the above offset.
+def UpdateGBR: Pseudo<(outs gprc:$rT), (ins gprc:$rI), "#UpdateGBR", []>;
+
+
+// Support for thread-local storage.
+def PPC32GOT: Pseudo<(outs gprc:$rD), (ins), "#PPC32GOT",
+ [(set i32:$rD, (PPCppc32GOT))]>;
+
+// Get the _GLOBAL_OFFSET_TABLE_ in PIC mode.
+// This uses two output registers, the first as the real output, the second as a
+// temporary register, used internally in code generation.
+def PPC32PICGOT: Pseudo<(outs gprc:$rD, gprc:$rT), (ins), "#PPC32PICGOT",
+ []>, NoEncode<"$rT">;
+
+def LDgotTprelL32: Pseudo<(outs gprc:$rD), (ins s16imm:$disp, gprc_nor0:$reg),
+ "#LDgotTprelL32",
+ [(set i32:$rD,
+ (PPCldGotTprelL tglobaltlsaddr:$disp, i32:$reg))]>;
+def : Pat<(PPCaddTls i32:$in, tglobaltlsaddr:$g),
+ (ADD4TLS $in, tglobaltlsaddr:$g)>;
+def ADDItlsgdL32 : Pseudo<(outs gprc:$rD), (ins gprc_nor0:$reg, s16imm:$disp),
+ "#ADDItlsgdL32",
+ [(set i32:$rD,
+ (PPCaddiTlsgdL i32:$reg, tglobaltlsaddr:$disp))]>;
+def GETtlsADDR32 : Pseudo<(outs gprc:$rD), (ins gprc:$reg, tlsgd32:$sym),
+ "#GETtlsADDR32",
+ [(set i32:$rD,
+ (PPCgetTlsAddr i32:$reg, tglobaltlsaddr:$sym))]>;
+def ADDItlsldL32 : Pseudo<(outs gprc:$rD), (ins gprc_nor0:$reg, s16imm:$disp),
+ "#ADDItlsldL32",
+ [(set i32:$rD,
+ (PPCaddiTlsldL i32:$reg, tglobaltlsaddr:$disp))]>;
+def GETtlsldADDR32 : Pseudo<(outs gprc:$rD), (ins gprc:$reg, tlsgd32:$sym),
+ "#GETtlsldADDR32",
+ [(set i32:$rD,
+ (PPCgetTlsldAddr i32:$reg, tglobaltlsaddr:$sym))]>;
+def ADDIdtprelL32 : Pseudo<(outs gprc:$rD), (ins gprc_nor0:$reg, s16imm:$disp),
+ "#ADDIdtprelL32",
+ [(set i32:$rD,
+ (PPCaddiDtprelL i32:$reg, tglobaltlsaddr:$disp))]>;
+def ADDISdtprelHA32 : Pseudo<(outs gprc:$rD), (ins gprc_nor0:$reg, s16imm:$disp),
+ "#ADDISdtprelHA32",
+ [(set i32:$rD,
+ (PPCaddisDtprelHA i32:$reg,
+ tglobaltlsaddr:$disp))]>;
+
+
// Standard shifts. These are represented separately from the real shifts above
// so that we can distinguish between shifts that allow 5-bit and 6-bit shift
// amounts.
Index: lib/Target/PowerPC/PPCMCInstLower.cpp
===================================================================
--- lib/Target/PowerPC/PPCMCInstLower.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCMCInstLower.cpp (working copy)
@@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "PPC.h"
+#include "PPCSubtarget.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
@@ -24,6 +25,7 @@
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/Target/Mangler.h"
+#include "llvm/Target/TargetMachine.h"
using namespace llvm;
static MachineModuleInfoMachO &getMachOMMI(AsmPrinter &AP) {
@@ -32,7 +34,9 @@
static MCSymbol *GetSymbolFromOperand(const MachineOperand &MO, AsmPrinter &AP){
+ const TargetMachine &TM = AP.TM;
MCContext &Ctx = AP.OutContext;
+ bool isDarwin = TM.getSubtarget<PPCSubtarget>().isDarwin();
SmallString<128> Name;
if (!MO.isGlobal()) {
@@ -42,7 +46,7 @@
} else {
const GlobalValue *GV = MO.getGlobal();
bool isImplicitlyPrivate = false;
- if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB ||
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB ||
(MO.getTargetFlags() & PPCII::MO_NLP_FLAG))
isImplicitlyPrivate = true;
@@ -51,7 +55,7 @@
// If the target flags on the operand changes the name of the symbol, do that
// before we return the symbol.
- if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB) {
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && isDarwin) {
Name += "$stub";
const char *PGP = AP.MAI->getPrivateGlobalPrefix();
const char *Prefix = "";
@@ -132,6 +136,9 @@
break;
}
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && !isDarwin)
+ RefKind = MCSymbolRefExpr::VK_PLT;
+
const MCExpr *Expr = MCSymbolRefExpr::Create(Symbol, RefKind, Ctx);
if (!MO.isJTI() && MO.getOffset())
Index: lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
===================================================================
--- lib/Target/PowerPC/PPCMachineFunctionInfo.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCMachineFunctionInfo.cpp (working copy)
@@ -8,8 +8,16 @@
//===----------------------------------------------------------------------===//
#include "PPCMachineFunctionInfo.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/Target/TargetMachine.h"
using namespace llvm;
void PPCFunctionInfo::anchor() { }
+MCSymbol *PPCFunctionInfo::getPICOffsetSymbol() const {
+ const MCAsmInfo *MAI = MF.getTarget().getMCAsmInfo();
+ return MF.getContext().GetOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix())+
+ Twine(MF.getFunctionNumber())+"$poff");
+}
Index: lib/Target/PowerPC/PPCMachineFunctionInfo.h
===================================================================
--- lib/Target/PowerPC/PPCMachineFunctionInfo.h (revision 270019)
+++ lib/Target/PowerPC/PPCMachineFunctionInfo.h (working copy)
@@ -92,6 +92,12 @@
/// 64-bit SVR4 ABI.
SmallVector<unsigned, 3> MustSaveCRs;
+ /// Hold onto our MachineFunction context.
+ MachineFunction &MF;
+
+ /// Whether this uses the PIC Base register or not.
+ bool UsesPICBase;
+
public:
explicit PPCFunctionInfo(MachineFunction &MF)
: FramePointerSaveIndex(0),
@@ -109,7 +115,9 @@
VarArgsStackOffset(0),
VarArgsNumGPR(0),
VarArgsNumFPR(0),
- CRSpillFrameIndex(0) {}
+ CRSpillFrameIndex(0),
+ MF(MF),
+ UsesPICBase(0) {}
int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
@@ -170,6 +178,11 @@
const SmallVectorImpl<unsigned> &
getMustSaveCRs() const { return MustSaveCRs; }
void addMustSaveCR(unsigned Reg) { MustSaveCRs.push_back(Reg); }
+
+ void setUsesPICBase(bool uses) { UsesPICBase = uses; }
+ bool usesPICBase() const { return UsesPICBase; }
+
+ MCSymbol *getPICOffsetSymbol() const;
};
} // end of namespace llvm
Index: lib/Target/PowerPC/PPCRegisterInfo.cpp
===================================================================
--- lib/Target/PowerPC/PPCRegisterInfo.cpp (revision 270019)
+++ lib/Target/PowerPC/PPCRegisterInfo.cpp (working copy)
@@ -199,7 +199,16 @@
if (PPCFI->needsFP(MF))
Reserved.set(PPC::R31);
- if (hasBasePointer(MF))
+ if (hasBasePointer(MF)) {
+ if (Subtarget.isSVR4ABI() && !Subtarget.isPPC64() &&
+ MF.getTarget().getRelocationModel() == Reloc::PIC_)
+ Reserved.set(PPC::R29);
+ else
+ Reserved.set(PPC::R30);
+ }
+
+ if (Subtarget.isSVR4ABI() && !Subtarget.isPPC64() &&
+ MF.getTarget().getRelocationModel() == Reloc::PIC_)
Reserved.set(PPC::R30);
// Reserve Altivec registers when Altivec is unavailable.
@@ -695,7 +704,14 @@
if (!hasBasePointer(MF))
return getFrameRegister(MF);
- return Subtarget.isPPC64() ? PPC::X30 : PPC::R30;
+ if (Subtarget.isPPC64())
+ return PPC::X30;
+
+ if (Subtarget.isSVR4ABI() &&
+ MF.getTarget().getRelocationModel() == Reloc::PIC_)
+ return PPC::R29;
+
+ return PPC::R30;
}
bool PPCRegisterInfo::hasBasePointer(const MachineFunction &MF) const {
Index: lib/Target/PowerPC/PPCSubtarget.h
===================================================================
--- lib/Target/PowerPC/PPCSubtarget.h (revision 270019)
+++ lib/Target/PowerPC/PPCSubtarget.h (working copy)
@@ -189,6 +189,9 @@
/// isBGQ - True if this is a BG/Q platform.
bool isBGQ() const { return TargetTriple.getVendor() == Triple::BGQ; }
+ bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
+// bool isTargetMachO() const { return TargetTriple.isOSBinFormatMachO(); }
+
bool isDarwinABI() const { return isDarwin(); }
bool isSVR4ABI() const { return !isDarwin(); }
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