[mips] Refactor instructions which move data from or to coprocessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171510 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 34 insertions, 33 deletions

diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td
index 552817704d..2a1ed3a58c 100644
--- a/lib/Target/Mips/Mips64InstrInfo.td
+++ b/lib/Target/Mips/Mips64InstrInfo.td
@@ -308,22 +308,22 @@ def : InstAlias<"move $dst,$src", (DADD CPU64Regs:$dst,CPU64Regs:$src,ZERO_64)>;
 
 /// Move between CPU and coprocessor registers
 let DecoderNamespace = "Mips64" in {
-def MFC0_3OP64  : MFC3OP<0x10, 0, (outs CPU64Regs:$rt), 
-                       (ins CPU64Regs:$rd, uimm16:$sel),"mfc0\t$rt, $rd, $sel">;
-def MTC0_3OP64  : MFC3OP<0x10, 4, (outs CPU64Regs:$rd, uimm16:$sel),
-                       (ins CPU64Regs:$rt),"mtc0\t$rt, $rd, $sel">;
-def MFC2_3OP64  : MFC3OP<0x12, 0, (outs CPU64Regs:$rt),
-                       (ins CPU64Regs:$rd, uimm16:$sel),"mfc2\t$rt, $rd, $sel">;
-def MTC2_3OP64  : MFC3OP<0x12, 4, (outs CPU64Regs:$rd, uimm16:$sel),
-                       (ins CPU64Regs:$rt),"mtc2\t$rt, $rd, $sel">;
-def DMFC0_3OP64  : MFC3OP<0x10, 1, (outs CPU64Regs:$rt), 
-                       (ins CPU64Regs:$rd, uimm16:$sel),"dmfc0\t$rt, $rd, $sel">;
-def DMTC0_3OP64  : MFC3OP<0x10, 5, (outs CPU64Regs:$rd, uimm16:$sel),
-                       (ins CPU64Regs:$rt),"dmtc0\t$rt, $rd, $sel">;
-def DMFC2_3OP64  : MFC3OP<0x12, 1, (outs CPU64Regs:$rt),
-                       (ins CPU64Regs:$rd, uimm16:$sel),"dmfc2\t$rt, $rd, $sel">;
-def DMTC2_3OP64  : MFC3OP<0x12, 5, (outs CPU64Regs:$rd, uimm16:$sel),
-                       (ins CPU64Regs:$rt),"dmtc2\t$rt, $rd, $sel">;
+def MFC0_3OP64 : MFC3OP<(outs CPU64Regs:$rt), (ins CPU64Regs:$rd, uimm16:$sel),
+                        "mfc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 0>;
+def MTC0_3OP64 : MFC3OP<(outs CPU64Regs:$rd, uimm16:$sel), (ins CPU64Regs:$rt),
+                        "mtc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 4>;
+def MFC2_3OP64 : MFC3OP<(outs CPU64Regs:$rt), (ins CPU64Regs:$rd, uimm16:$sel),
+                        "mfc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 0>;
+def MTC2_3OP64 : MFC3OP<(outs CPU64Regs:$rd, uimm16:$sel), (ins CPU64Regs:$rt),
+                        "mtc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 4>;
+def DMFC0_3OP64 : MFC3OP<(outs CPU64Regs:$rt), (ins CPU64Regs:$rd, uimm16:$sel),
+                         "dmfc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 1>;
+def DMTC0_3OP64 : MFC3OP<(outs CPU64Regs:$rd, uimm16:$sel), (ins CPU64Regs:$rt),
+                         "dmtc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 5>;
+def DMFC2_3OP64 : MFC3OP<(outs CPU64Regs:$rt), (ins CPU64Regs:$rd, uimm16:$sel),
+                         "dmfc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 1>;
+def DMTC2_3OP64 : MFC3OP<(outs CPU64Regs:$rd, uimm16:$sel), (ins CPU64Regs:$rt),
+                         "dmtc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 5>;
 }
 // Two operand (implicit 0 selector) versions:
 def : InstAlias<"mfc0 $rt, $rd", (MFC0_3OP64 CPU64Regs:$rt, CPU64Regs:$rd, 0)>;
diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index 5edaf18fc4..b9f24b82c5 100644
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -176,17 +176,15 @@ class FJ<bits<6> op>
  //===----------------------------------------------------------------------===//
 // MFC instruction class in Mips : <|op|mf|rt|rd|0000000|sel|>
 //===----------------------------------------------------------------------===//
-class MFC3OP<bits<6> op, bits<5> _mfmt, dag outs, dag ins, string asmstr>:
-  InstSE<outs, ins, asmstr, [], NoItinerary, FrmFR>
+class MFC3OP_FM<bits<6> op, bits<5> mfmt>
 {
-  bits<5> mfmt;
   bits<5> rt;
   bits<5> rd;
   bits<3> sel;
 
-  let Opcode = op;
-  let mfmt = _mfmt;
+  bits<32> Inst;
 
+  let Inst{31-26} = op;
   let Inst{25-21} = mfmt;
   let Inst{20-16} = rt;
   let Inst{15-11} = rd;
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 5c734bca5a..15c1fcc603 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -710,6 +710,9 @@ class SCBase<string opstr, RegisterClass RC, Operand Mem> :
   let Constraints = "$rt = $dst";
 }
 
+class MFC3OP<dag outs, dag ins, string asmstr> :
+  InstSE<outs, ins, asmstr, [], NoItinerary, FrmFR>;
+
 //===----------------------------------------------------------------------===//
 // Pseudo instructions
 //===----------------------------------------------------------------------===//
@@ -897,21 +900,17 @@ def EXT : ExtBase<"ext", CPURegs>, EXT_FM<0>;
 def INS : InsBase<"ins", CPURegs>, EXT_FM<4>;
 
 /// Move Control Registers From/To CPU Registers
-def MFC0_3OP  : MFC3OP<0x10, 0, (outs CPURegs:$rt),
-                       (ins CPURegs:$rd, uimm16:$sel),"mfc0\t$rt, $rd, $sel">;
-def : InstAlias<"mfc0 $rt, $rd", (MFC0_3OP CPURegs:$rt, CPURegs:$rd, 0)>;
+def MFC0_3OP : MFC3OP<(outs CPURegs:$rt), (ins CPURegs:$rd, uimm16:$sel),
+                      "mfc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 0>;
 
-def MTC0_3OP  : MFC3OP<0x10, 4, (outs CPURegs:$rd, uimm16:$sel),
-                       (ins CPURegs:$rt),"mtc0\t$rt, $rd, $sel">;
-def : InstAlias<"mtc0 $rt, $rd", (MTC0_3OP CPURegs:$rd, 0, CPURegs:$rt)>;
+def MTC0_3OP : MFC3OP<(outs CPURegs:$rd, uimm16:$sel), (ins CPURegs:$rt),
+                      "mtc0\t$rt, $rd, $sel">, MFC3OP_FM<0x10, 4>;
 
-def MFC2_3OP  : MFC3OP<0x12, 0, (outs CPURegs:$rt),
-                       (ins CPURegs:$rd, uimm16:$sel),"mfc2\t$rt, $rd, $sel">;
-def : InstAlias<"mfc2 $rt, $rd", (MFC2_3OP CPURegs:$rt, CPURegs:$rd, 0)>;
+def MFC2_3OP : MFC3OP<(outs CPURegs:$rt), (ins CPURegs:$rd, uimm16:$sel),
+                      "mfc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 0>;
 
-def MTC2_3OP  : MFC3OP<0x12, 4, (outs CPURegs:$rd, uimm16:$sel),
-                       (ins CPURegs:$rt),"mtc2\t$rt, $rd, $sel">;
-def : InstAlias<"mtc2 $rt, $rd", (MTC2_3OP CPURegs:$rd, 0, CPURegs:$rt)>;
+def MTC2_3OP : MFC3OP<(outs CPURegs:$rd, uimm16:$sel), (ins CPURegs:$rt),
+                      "mtc2\t$rt, $rd, $sel">, MFC3OP_FM<0x12, 4>;
 
 //===----------------------------------------------------------------------===//
 // Instruction aliases
@@ -932,6 +931,10 @@ def : InstAlias<"slt $rs,$rt,$imm",
                 (SLTi CPURegs:$rs,CPURegs:$rt,simm16:$imm)>;
 def : InstAlias<"xor $rs,$rt,$imm",
                 (XORi CPURegs:$rs,CPURegs:$rt,simm16:$imm)>;
+def : InstAlias<"mfc0 $rt, $rd", (MFC0_3OP CPURegs:$rt, CPURegs:$rd, 0)>;
+def : InstAlias<"mtc0 $rt, $rd", (MTC0_3OP CPURegs:$rd, 0, CPURegs:$rt)>;
+def : InstAlias<"mfc2 $rt, $rd", (MFC2_3OP CPURegs:$rt, CPURegs:$rd, 0)>;
+def : InstAlias<"mtc2 $rt, $rd", (MTC2_3OP CPURegs:$rd, 0, CPURegs:$rt)>;
 
 //===----------------------------------------------------------------------===//
 // Assembler Pseudo Instructions