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-rw-r--r--lib/Target/ARM/ARMAsmPrinter.cpp177
1 files changed, 24 insertions, 153 deletions
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index eb73902..dbc3ee4 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -654,7 +654,7 @@ void ARMAsmPrinter::emitAttributes() {
}
/* TODO: ARMBuildAttrs::Allowed is not completely accurate,
- * since NEON can have 1 (allowed) or 2 (fused MAC operations) */
+ * since NEON can have 1 (allowed) or 2 (MAC operations) */
if (Subtarget->hasNEON()) {
AttrEmitter->EmitAttribute(ARMBuildAttrs::Advanced_SIMD_arch,
ARMBuildAttrs::Allowed);
@@ -1010,19 +1010,16 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
MI->dump();
assert(0 && "Unsupported opcode for unwinding information");
case ARM::MOVr:
- case ARM::tMOVgpr2gpr:
- case ARM::tMOVgpr2tgpr:
Offset = 0;
break;
case ARM::ADDri:
Offset = -MI->getOperand(2).getImm();
break;
case ARM::SUBri:
- case ARM::t2SUBrSPi:
- Offset = MI->getOperand(2).getImm();
+ Offset = MI->getOperand(2).getImm();
break;
case ARM::tSUBspi:
- Offset = MI->getOperand(2).getImm()*4;
+ Offset = MI->getOperand(2).getImm()*4;
break;
case ARM::tADDspi:
case ARM::tADDrSPi:
@@ -1072,39 +1069,18 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
extern cl::opt<bool> EnableARMEHABI;
+// Simple pseudo-instructions have their lowering (with expansion to real
+// instructions) auto-generated.
+#include "ARMGenMCPseudoLowering.inc"
+
void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
- unsigned Opc = MI->getOpcode();
- switch (Opc) {
- default: break;
- case ARM::B: {
- // B is just a Bcc with an 'always' predicate.
- MCInst TmpInst;
- LowerARMMachineInstrToMCInst(MI, TmpInst, *this);
- TmpInst.setOpcode(ARM::Bcc);
- // Add predicate operands.
- TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- TmpInst.addOperand(MCOperand::CreateReg(0));
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
- case ARM::LDMIA_RET: {
- // LDMIA_RET is just a normal LDMIA_UPD instruction that targets PC and as
- // such has additional code-gen properties and scheduling information.
- // To emit it, we just construct as normal and set the opcode to LDMIA_UPD.
- MCInst TmpInst;
- LowerARMMachineInstrToMCInst(MI, TmpInst, *this);
- TmpInst.setOpcode(ARM::LDMIA_UPD);
- OutStreamer.EmitInstruction(TmpInst);
+ // Do any auto-generated pseudo lowerings.
+ if (emitPseudoExpansionLowering(OutStreamer, MI))
return;
- }
- case ARM::t2ADDrSPi:
- case ARM::t2ADDrSPi12:
- case ARM::t2SUBrSPi:
- case ARM::t2SUBrSPi12:
- assert ((MI->getOperand(1).getReg() == ARM::SP) &&
- "Unexpected source register!");
- break;
+ // Check for manual lowerings.
+ unsigned Opc = MI->getOpcode();
+ switch (Opc) {
case ARM::t2MOVi32imm: assert(0 && "Should be lowered by thumb2it pass");
case ARM::DBG_VALUE: {
if (isVerbose() && OutStreamer.hasRawTextSupport()) {
@@ -1115,14 +1091,6 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
return;
}
- case ARM::tBfar: {
- MCInst TmpInst;
- TmpInst.setOpcode(ARM::tBL);
- TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(
- MI->getOperand(0).getMBB()->getSymbol(), OutContext)));
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
case ARM::LEApcrel:
case ARM::tLEApcrel:
case ARM::t2LEApcrel: {
@@ -1153,39 +1121,8 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
OutStreamer.EmitInstruction(TmpInst);
return;
}
- case ARM::MOVPCRX: {
- MCInst TmpInst;
- TmpInst.setOpcode(ARM::MOVr);
- TmpInst.addOperand(MCOperand::CreateReg(ARM::PC));
- TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
- // Add predicate operands.
- TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- TmpInst.addOperand(MCOperand::CreateReg(0));
- // Add 's' bit operand (always reg0 for this)
- TmpInst.addOperand(MCOperand::CreateReg(0));
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
// Darwin call instructions are just normal call instructions with different
// clobber semantics (they clobber R9).
- case ARM::BLr9:
- case ARM::BLr9_pred:
- case ARM::BLXr9:
- case ARM::BLXr9_pred: {
- unsigned newOpc;
- switch (Opc) {
- default: assert(0);
- case ARM::BLr9: newOpc = ARM::BL; break;
- case ARM::BLr9_pred: newOpc = ARM::BL_pred; break;
- case ARM::BLXr9: newOpc = ARM::BLX; break;
- case ARM::BLXr9_pred: newOpc = ARM::BLX_pred; break;
- }
- MCInst TmpInst;
- LowerARMMachineInstrToMCInst(MI, TmpInst, *this);
- TmpInst.setOpcode(newOpc);
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
case ARM::BXr9_CALL:
case ARM::BX_CALL: {
{
@@ -1215,6 +1152,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
TmpInst.setOpcode(ARM::tMOVr);
TmpInst.addOperand(MCOperand::CreateReg(ARM::LR));
TmpInst.addOperand(MCOperand::CreateReg(ARM::PC));
+ // Add predicate operands.
+ TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+ TmpInst.addOperand(MCOperand::CreateReg(0));
OutStreamer.EmitInstruction(TmpInst);
}
{
@@ -1445,7 +1385,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
case ARM::t2BR_JT: {
// Lower and emit the instruction itself, then the jump table following it.
MCInst TmpInst;
- TmpInst.setOpcode(ARM::tMOVgpr2gpr);
+ TmpInst.setOpcode(ARM::tMOVr);
TmpInst.addOperand(MCOperand::CreateReg(ARM::PC));
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
// Add predicate operands.
@@ -1494,7 +1434,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
// mov pc, target
MCInst TmpInst;
unsigned Opc = MI->getOpcode() == ARM::BR_JTr ?
- ARM::MOVr : ARM::tMOVgpr2gpr;
+ ARM::MOVr : ARM::tMOVr;
TmpInst.setOpcode(Opc);
TmpInst.addOperand(MCOperand::CreateReg(ARM::PC));
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
@@ -1507,7 +1447,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
OutStreamer.EmitInstruction(TmpInst);
// Make sure the Thumb jump table is 4-byte aligned.
- if (Opc == ARM::tMOVgpr2gpr)
+ if (Opc == ARM::tMOVr)
EmitAlignment(2);
// Output the data for the jump table itself
@@ -1599,11 +1539,12 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCSymbol *Label = GetARMSJLJEHLabel();
{
MCInst TmpInst;
- TmpInst.setOpcode(ARM::tMOVgpr2tgpr);
+ TmpInst.setOpcode(ARM::tMOVr);
TmpInst.addOperand(MCOperand::CreateReg(ValReg));
TmpInst.addOperand(MCOperand::CreateReg(ARM::PC));
- // 's' bit operand
- TmpInst.addOperand(MCOperand::CreateReg(ARM::CPSR));
+ // Predicate.
+ TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+ TmpInst.addOperand(MCOperand::CreateReg(0));
OutStreamer.AddComment("eh_setjmp begin");
OutStreamer.EmitInstruction(TmpInst);
}
@@ -1817,7 +1758,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
{
MCInst TmpInst;
- TmpInst.setOpcode(ARM::tMOVtgpr2gpr);
+ TmpInst.setOpcode(ARM::tMOVr);
TmpInst.addOperand(MCOperand::CreateReg(ARM::SP));
TmpInst.addOperand(MCOperand::CreateReg(ScratchReg));
// Predicate.
@@ -1858,75 +1799,6 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
return;
}
- // Tail jump branches are really just branch instructions with additional
- // code-gen attributes. Convert them to the canonical form here.
- case ARM::TAILJMPd:
- case ARM::TAILJMPdND: {
- MCInst TmpInst, TmpInst2;
- // Lower the instruction as-is to get the operands properly converted.
- LowerARMMachineInstrToMCInst(MI, TmpInst2, *this);
- TmpInst.setOpcode(ARM::Bcc);
- TmpInst.addOperand(TmpInst2.getOperand(0));
- // Add predicate operands.
- TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- TmpInst.addOperand(MCOperand::CreateReg(0));
- OutStreamer.AddComment("TAILCALL");
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
- case ARM::tTAILJMPd:
- case ARM::tTAILJMPdND: {
- MCInst TmpInst, TmpInst2;
- LowerARMMachineInstrToMCInst(MI, TmpInst2, *this);
- // The Darwin toolchain doesn't support tail call relocations of 16-bit
- // branches.
- TmpInst.setOpcode(Opc == ARM::tTAILJMPd ? ARM::t2B : ARM::tB);
- TmpInst.addOperand(TmpInst2.getOperand(0));
- OutStreamer.AddComment("TAILCALL");
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
- case ARM::TAILJMPrND:
- case ARM::tTAILJMPrND:
- case ARM::TAILJMPr:
- case ARM::tTAILJMPr: {
- unsigned newOpc = (Opc == ARM::TAILJMPr || Opc == ARM::TAILJMPrND)
- ? ARM::BX : ARM::tBX;
- MCInst TmpInst;
- TmpInst.setOpcode(newOpc);
- TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
- // Predicate.
- TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
- TmpInst.addOperand(MCOperand::CreateReg(0));
- OutStreamer.AddComment("TAILCALL");
- OutStreamer.EmitInstruction(TmpInst);
- return;
- }
-
- // These are the pseudos created to comply with stricter operand restrictions
- // on ARMv5. Lower them now to "normal" instructions, since all the
- // restrictions are already satisfied.
- case ARM::MULv5:
- EmitPatchedInstruction(MI, ARM::MUL);
- return;
- case ARM::MLAv5:
- EmitPatchedInstruction(MI, ARM::MLA);
- return;
- case ARM::SMULLv5:
- EmitPatchedInstruction(MI, ARM::SMULL);
- return;
- case ARM::UMULLv5:
- EmitPatchedInstruction(MI, ARM::UMULL);
- return;
- case ARM::SMLALv5:
- EmitPatchedInstruction(MI, ARM::SMLAL);
- return;
- case ARM::UMLALv5:
- EmitPatchedInstruction(MI, ARM::UMLAL);
- return;
- case ARM::UMAALv5:
- EmitPatchedInstruction(MI, ARM::UMAAL);
- return;
}
MCInst TmpInst;
@@ -1944,11 +1816,10 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
//===----------------------------------------------------------------------===//
static MCInstPrinter *createARMMCInstPrinter(const Target &T,
- TargetMachine &TM,
unsigned SyntaxVariant,
const MCAsmInfo &MAI) {
if (SyntaxVariant == 0)
- return new ARMInstPrinter(TM, MAI);
+ return new ARMInstPrinter(MAI);
return 0;
}
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