Add encoding support for Thumb2 PLD and PLI instructions.

[oota-llvm.git] / lib / Target / ARM / ARMCodeEmitter.cpp

diff --git a/lib/Target/ARM/ARMCodeEmitter.cpp b/lib/Target/ARM/ARMCodeEmitter.cpp
index 8888420d2afc5c48b3abd93668e37134de357084..ee97b37764a53b703327f6187ba709911ee30819 100644 (file)
--- a/lib/Target/ARM/ARMCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMCodeEmitter.cpp
@@ -177,6 +177,16 @@ namespace {
       const { return 0; }
     unsigned getSORegOpValue(const MachineInstr &MI, unsigned Op)
       const { return 0; }
+    unsigned getT2AddrModeImm12OpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
+    unsigned getT2AddrModeImm8OpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
+    unsigned getT2AddrModeImm8OffsetOpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
+    unsigned getT2AddrModeImm12OffsetOpValue(const MachineInstr &MI,unsigned Op)
+      const { return 0; }
+    unsigned getT2AddrModeSORegOpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
     unsigned getT2SORegOpValue(const MachineInstr &MI, unsigned Op)
       const { return 0; }
     unsigned getRotImmOpValue(const MachineInstr &MI, unsigned Op)
@@ -185,6 +195,8 @@ namespace {
       const { return 0; }
     unsigned getAddrMode6AddressOpValue(const MachineInstr &MI, unsigned Op)
       const { return 0; }
+    unsigned getAddrMode6DupAddressOpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
     unsigned getAddrMode6OffsetOpValue(const MachineInstr &MI, unsigned Op)
       const { return 0; }
     unsigned getBitfieldInvertedMaskOpValue(const MachineInstr &MI,
@@ -225,12 +237,14 @@ namespace {
       const { return 0;}
     uint32_t getAddrMode3OffsetOpValue(const MachineInstr &MI, unsigned OpIdx)
       const { return 0;}
-    uint32_t getAddrMode3OpValue(const MachineInstr &MI, unsigned Op) const
-      { return 0; }
+    uint32_t getAddrMode3OpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
+    uint32_t getAddrModeS4OpValue(const MachineInstr &MI, unsigned Op)
+      const { return 0; }
     uint32_t getAddrMode5OpValue(const MachineInstr &MI, unsigned Op) const {
-      // {12-9}  = reg
-      // {8}     = (U)nsigned (add == '1', sub == '0')
-      // {7-0}   = imm12
+      // {17-13} = reg
+      // {12}    = (U)nsigned (add == '1', sub == '0')
+      // {11-0}  = imm12
       const MachineOperand &MO  = MI.getOperand(Op);
       const MachineOperand &MO1 = MI.getOperand(Op + 1);
       if (!MO.isReg()) {
@@ -238,12 +252,24 @@ namespace {
         return 0;
       }
       unsigned Reg = getARMRegisterNumbering(MO.getReg());
-      int32_t Imm8 = MO1.getImm();
-      uint32_t Binary;
-      Binary = Imm8 & 0xff;
-      if (Imm8 >= 0)
-        Binary |= (1 << 8);
-      Binary |= (Reg << 9);
+      int32_t Imm12 = MO1.getImm();
+
+      // Special value for #-0
+      if (Imm12 == INT32_MIN)
+        Imm12 = 0;
+
+      // Immediate is always encoded as positive. The 'U' bit controls add vs
+      // sub.
+      bool isAdd = true;
+      if (Imm12 < 0) {
+        Imm12 = -Imm12;
+        isAdd = false;
+      }
+
+      uint32_t Binary = Imm12 & 0xfff;
+      if (isAdd)
+        Binary |= (1 << 12);
+      Binary |= (Reg << 13);
       return Binary;
     }
     unsigned getNEONVcvtImm32OpValue(const MachineInstr &MI, unsigned Op)
@@ -378,12 +404,8 @@ unsigned ARMCodeEmitter::getMachineOpValue(const MachineInstr &MI,
     emitJumpTableAddress(MO.getIndex(), ARM::reloc_arm_relative);
   else if (MO.isMBB())
     emitMachineBasicBlock(MO.getMBB(), ARM::reloc_arm_branch);
-  else {
-#ifndef NDEBUG
-    errs() << MO;
-#endif
-    llvm_unreachable(0);
-  }
+  else
+    llvm_unreachable("Unable to encode MachineOperand!");
   return 0;
 }
 
@@ -761,10 +783,10 @@ void ARMCodeEmitter::emitPseudoInstruction(const MachineInstr &MI) {
   switch (Opcode) {
   default:
     llvm_unreachable("ARMCodeEmitter::emitPseudoInstruction");
-  case ARM::BX:
-  case ARM::BMOVPCRX:
-  case ARM::BXr9:
-  case ARM::BMOVPCRXr9: {
+  case ARM::BX_CALL:
+  case ARM::BMOVPCRX_CALL:
+  case ARM::BXr9_CALL:
+  case ARM::BMOVPCRXr9_CALL: {
     // First emit mov lr, pc
     unsigned Binary = 0x01a0e00f;
     Binary |= II->getPredicate(&MI) << ARMII::CondShift;