Refactor mcr* and mr*c instructions into classes with the same encoding. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123910 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 46 insertions, 108 deletions

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index b5ac6f8..8e07f8f 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -3666,65 +3666,25 @@ defm LDC2 : LdStCop<0b1111,    1, "ldc2">;
 defm STC  : LdStCop<{?,?,?,?}, 0, "stc">;
 defm STC2 : LdStCop<0b1111,    0, "stc2">;
 
-def MCR : ABI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
-              GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
-              NoItinerary, "mcr", "\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2",
-              [/* For disassembly only; pattern left blank */]> {
-  let Inst{20} = 0;
-  let Inst{4} = 1;
-  
-  bits<4> Rt;
-  bits<4> cop;
-  bits<3> opc1;
-  bits<3> opc2;
-  bits<4> CRm;
-  bits<4> CRn;
-  
-  let Inst{15-12} = Rt;
-  let Inst{11-8}  = cop;
-  let Inst{23-21} = opc1;
-  let Inst{7-5}   = opc2;
-  let Inst{3-0}   = CRm;
-  let Inst{19-16} = CRn;
-}
+//===----------------------------------------------------------------------===//
+// Move between coprocessor and ARM core register -- for disassembly only
+//
 
-def MCR2 : ABXI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
-                GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
-                NoItinerary, "mcr2\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2",
-                [/* For disassembly only; pattern left blank */]> {
-  let Inst{31-28} = 0b1111;
-  let Inst{20} = 0;
+class MovRCopro<string opc, bit direction>
+  : ABI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
+        GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
+        NoItinerary, opc, "\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2",
+        [/* For disassembly only; pattern left blank */]> {
+  let Inst{20} = direction;
   let Inst{4} = 1;
-  
-  bits<4> Rt;
-  bits<4> cop;
-  bits<3> opc1;
-  bits<3> opc2;
-  bits<4> CRm;
-  bits<4> CRn;
-  
-  let Inst{15-12} = Rt;
-  let Inst{11-8}  = cop;
-  let Inst{23-21} = opc1;
-  let Inst{7-5}   = opc2;
-  let Inst{3-0}   = CRm;
-  let Inst{19-16} = CRn;
-}
 
-def MRC : ABI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
-              GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
-              NoItinerary, "mrc", "\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2",
-              [/* For disassembly only; pattern left blank */]> {
-  let Inst{20} = 1;
-  let Inst{4} = 1;
-  
   bits<4> Rt;
   bits<4> cop;
   bits<3> opc1;
   bits<3> opc2;
   bits<4> CRm;
   bits<4> CRn;
-  
+
   let Inst{15-12} = Rt;
   let Inst{11-8}  = cop;
   let Inst{23-21} = opc1;
@@ -3733,21 +3693,25 @@ def MRC : ABI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
   let Inst{19-16} = CRn;
 }
 
-def MRC2 : ABXI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
-                GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
-                NoItinerary, "mrc2\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2",
-                [/* For disassembly only; pattern left blank */]> {
+def MCR : MovRCopro<"mcr", 0 /* from ARM core register to coprocessor */>;
+def MRC : MovRCopro<"mrc", 1 /* from coprocessor to ARM core register */>;
+
+class MovRCopro2<string opc, bit direction>
+  : ABXI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
+         GPR:$Rt, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
+         NoItinerary, !strconcat(opc, "\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2"),
+         [/* For disassembly only; pattern left blank */]> {
   let Inst{31-28} = 0b1111;
-  let Inst{20} = 1;
+  let Inst{20} = direction;
   let Inst{4} = 1;
-  
+
   bits<4> Rt;
   bits<4> cop;
   bits<3> opc1;
   bits<3> opc2;
   bits<4> CRm;
   bits<4> CRn;
-  
+
   let Inst{15-12} = Rt;
   let Inst{11-8}  = cop;
   let Inst{23-21} = opc1;
@@ -3756,57 +3720,23 @@ def MRC2 : ABXI<0b1110, (outs), (ins p_imm:$cop, i32imm:$opc1,
   let Inst{19-16} = CRn;
 }
 
-def MCRR : ABI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
-               GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
-               NoItinerary, "mcrr", "\t$cop, $opc1, $Rt, $Rt2, $CRm",
-               [/* For disassembly only; pattern left blank */]> {
-  let Inst{23-20} = 0b0100;
-  
-  bits<4> Rt;
-  bits<4> Rt2;
-  bits<4> cop;
-  bits<4> opc1;
-  bits<4> CRm;
-  
-  let Inst{15-12} = Rt;
-  let Inst{19-16} = Rt2;
-  let Inst{11-8}  = cop;
-  let Inst{7-4}   = opc1;
-  let Inst{3-0}   = CRm;
-}
+def MCR2 : MovRCopro2<"mcr2", 0 /* from ARM core register to coprocessor */>;
+def MRC2 : MovRCopro2<"mrc2", 1 /* from coprocessor to ARM core register */>;
 
-def MCRR2 : ABXI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
-                 GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
-                 NoItinerary, "mcrr2\t$cop, $opc1, $Rt, $Rt2, $CRm",
-                 [/* For disassembly only; pattern left blank */]> {
-  let Inst{31-28} = 0b1111;
-  let Inst{23-20} = 0b0100;
-  
-  bits<4> Rt;
-  bits<4> Rt2;
-  bits<4> cop;
-  bits<4> opc1;
-  bits<4> CRm;
-  
-  let Inst{15-12} = Rt;
-  let Inst{19-16} = Rt2;
-  let Inst{11-8}  = cop;
-  let Inst{7-4}   = opc1;
-  let Inst{3-0}   = CRm;
-}
+class MovRRCopro<string opc, bit direction>
+  : ABI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
+        GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
+        NoItinerary, opc, "\t$cop, $opc1, $Rt, $Rt2, $CRm",
+        [/* For disassembly only; pattern left blank */]> {
+  let Inst{23-21} = 0b010;
+  let Inst{20} = direction;
 
-def MRRC : ABI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
-               GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
-               NoItinerary, "mrrc", "\t$cop, $opc1, $Rt, $Rt2, $CRm",
-               [/* For disassembly only; pattern left blank */]> {
-  let Inst{23-20} = 0b0101;
-  
   bits<4> Rt;
   bits<4> Rt2;
   bits<4> cop;
   bits<4> opc1;
   bits<4> CRm;
-  
+
   let Inst{15-12} = Rt;
   let Inst{19-16} = Rt2;
   let Inst{11-8}  = cop;
@@ -3814,19 +3744,24 @@ def MRRC : ABI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
   let Inst{3-0}   = CRm;
 }
 
-def MRRC2 : ABXI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
-                 GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
-                 NoItinerary, "mrrc2\t$cop, $opc1, $Rt, $Rt2, $CRm",
-                 [/* For disassembly only; pattern left blank */]> {
+def MCRR : MovRRCopro<"mcrr", 0 /* from ARM core register to coprocessor */>;
+def MRRC : MovRRCopro<"mrrc", 1 /* from coprocessor to ARM core register */>;
+
+class MovRRCopro2<string opc, bit direction>
+  : ABXI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
+         GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
+         NoItinerary, !strconcat(opc, "\t$cop, $opc1, $Rt, $Rt2, $CRm"),
+         [/* For disassembly only; pattern left blank */]> {
   let Inst{31-28} = 0b1111;
-  let Inst{23-20} = 0b0101;
-  
+  let Inst{23-21} = 0b010;
+  let Inst{20} = direction;
+
   bits<4> Rt;
   bits<4> Rt2;
   bits<4> cop;
   bits<4> opc1;
   bits<4> CRm;
-  
+
   let Inst{15-12} = Rt;
   let Inst{19-16} = Rt2;
   let Inst{11-8}  = cop;
@@ -3834,6 +3769,9 @@ def MRRC2 : ABXI<0b1100, (outs), (ins p_imm:$cop, i32imm:$opc1,
   let Inst{3-0}   = CRm;
 }
 
+def MCRR2 : MovRRCopro2<"mcrr2", 0 /* from ARM core register to coprocessor */>;
+def MRRC2 : MovRRCopro2<"mrrc2", 1 /* from coprocessor to ARM core register */>;
+
 //===----------------------------------------------------------------------===//
 // Move between special register and ARM core register -- for disassembly only
 //