Add encoding support for Thumb2 PLD and PLI instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120449 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 45 insertions, 1 deletions

diff --git a/lib/Target/ARM/ARMCodeEmitter.cpp b/lib/Target/ARM/ARMCodeEmitter.cpp
index a384928..ee97b37 100644
--- a/lib/Target/ARM/ARMCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMCodeEmitter.cpp
@@ -183,6 +183,8 @@ namespace {
       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)
diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td
index 8bee600..8bbf124 100644
--- a/lib/Target/ARM/ARMInstrThumb2.td
+++ b/lib/Target/ARM/ARMInstrThumb2.td
@@ -146,6 +146,11 @@ def t2am_imm8_offset : Operand<i32>,
   string EncoderMethod = "getT2AddrModeImm8OffsetOpValue";
 }
 
+def t2am_imm12_offset : Operand<i32> {
+  string EncoderMethod = "getT2AddrModeImm12OffsetOpValue";
+}
+
+
 // t2addrmode_imm8s4  := reg +/- (imm8 << 2)
 def t2addrmode_imm8s4 : Operand<i32> {
   let PrintMethod = "printT2AddrModeImm8s4Operand";
@@ -1539,6 +1544,10 @@ multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
     let Inst{21} = write;
     let Inst{20} = 1;
     let Inst{15-12} = 0b1111;
+    
+    bits<16> addr;
+    let Inst{19-16} = addr{15-12}; // Rn
+    let Inst{11-0}  = addr{11-0};  // imm12
   }
 
   def i8 : T2Ii8<(outs), (ins t2addrmode_imm8:$addr), IIC_Preload, opc,
@@ -1552,6 +1561,10 @@ multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
     let Inst{20} = 1;
     let Inst{15-12} = 0b1111;
     let Inst{11-8} = 0b1100;
+    
+    bits<13> addr;
+    let Inst{19-16} = addr{12-9}; // Rn
+    let Inst{7-0}   = addr{7-0};  // imm8
   }
 
   def s : T2Iso<(outs), (ins t2addrmode_so_reg:$addr), IIC_Preload, opc,
@@ -1565,10 +1578,15 @@ multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
     let Inst{20} = 1;
     let Inst{15-12} = 0b1111;
     let Inst{11-6} = 0000000;
+    
+    bits<10> addr;
+    let Inst{19-16} = addr{9-6}; // Rn
+    let Inst{3-0}   = addr{5-2}; // Rm
+    let Inst{5-4}   = addr{1-0}; // imm2
   }
 
   let isCodeGenOnly = 1 in
-  def pci : T2Ipc<(outs), (ins i32imm:$addr), IIC_Preload, opc,
+  def pci : T2Ipc<(outs), (ins t2am_imm12_offset:$addr), IIC_Preload, opc,
                 "\t$addr",
                []> {
     let Inst{31-25} = 0b1111100;
@@ -1579,6 +1597,10 @@ multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
     let Inst{20} = 1;
     let Inst{19-16} = 0b1111; // Rn = 0b1111
     let Inst{15-12} = 0b1111;
+    
+    bits<13> addr;
+    let Inst{23}   = addr{12};
+    let Inst{11-0} = addr{11-0};
   }
 }
 
diff --git a/lib/Target/ARM/ARMMCCodeEmitter.cpp b/lib/Target/ARM/ARMMCCodeEmitter.cpp
index a2829c9..742afa5 100644
--- a/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -183,6 +183,8 @@ public:
     SmallVectorImpl<MCFixup> &Fixups) const;
   unsigned getT2AddrModeImm8OffsetOpValue(const MCInst &MI, unsigned OpNum,
     SmallVectorImpl<MCFixup> &Fixups) const;
+  unsigned getT2AddrModeImm12OffsetOpValue(const MCInst &MI, unsigned OpNum,
+    SmallVectorImpl<MCFixup> &Fixups) const;
   unsigned getT2AddrModeImm12OpValue(const MCInst &MI, unsigned OpNum,
     SmallVectorImpl<MCFixup> &Fixups) const;
 
@@ -723,6 +725,22 @@ getT2AddrModeImm8OffsetOpValue(const MCInst &MI, unsigned OpNum,
 }
 
 unsigned ARMMCCodeEmitter::
+getT2AddrModeImm12OffsetOpValue(const MCInst &MI, unsigned OpNum,
+                         SmallVectorImpl<MCFixup> &Fixups) const {
+  const MCOperand &MO1 = MI.getOperand(OpNum);
+
+  // FIXME: Needs fixup support.
+  unsigned Value = 0;
+  int32_t tmp = (int32_t)MO1.getImm();
+  if (tmp < 0)
+    tmp = abs(tmp);
+  else
+    Value |= 4096; // Set the ADD bit
+  Value |= tmp & 4095;
+  return Value;
+}
+
+unsigned ARMMCCodeEmitter::
 getT2AddrModeImm12OpValue(const MCInst &MI, unsigned OpNum,
                          SmallVectorImpl<MCFixup> &Fixups) const {
   const MCOperand &MO1 = MI.getOperand(OpNum);
diff --git a/utils/TableGen/EDEmitter.cpp b/utils/TableGen/EDEmitter.cpp
index 61d4ccd..fcce3a5 100644
--- a/utils/TableGen/EDEmitter.cpp
+++ b/utils/TableGen/EDEmitter.cpp
@@ -614,6 +614,7 @@ static int ARMFlagFromOpName(LiteralConstantEmitter *type,
   MISC("it_mask", "kOperandTypeThumbITMask");                     // I
   MISC("t2addrmode_imm8", "kOperandTypeThumb2AddrModeImm8");      // R, I
   MISC("t2am_imm8_offset", "kOperandTypeThumb2AddrModeImm8Offset");//I
+  MISC("t2am_imm12_offset", "kOperandTypeThumb2AddrModeImm12Offset");//I
   MISC("t2addrmode_imm12", "kOperandTypeThumb2AddrModeImm12");    // R, I
   MISC("t2addrmode_so_reg", "kOperandTypeThumb2AddrModeSoReg");   // R, R, I
   MISC("t2addrmode_imm8s4", "kOperandTypeThumb2AddrModeImm8s4");  // R, I
@@ -840,6 +841,7 @@ static void emitCommonEnums(raw_ostream &o, unsigned int &i) {
   operandTypes.addEntry("kOperandTypeThumb2SoImm");
   operandTypes.addEntry("kOperandTypeThumb2AddrModeImm8");
   operandTypes.addEntry("kOperandTypeThumb2AddrModeImm8Offset");
+  operandTypes.addEntry("kOperandTypeThumb2AddrModeImm12Offset");
   operandTypes.addEntry("kOperandTypeThumb2AddrModeImm12");
   operandTypes.addEntry("kOperandTypeThumb2AddrModeSoReg");
   operandTypes.addEntry("kOperandTypeThumb2AddrModeImm8s4");