: Thumb1I<oops, iops, AddrModeNone, Size4Bytes, itin, asm, "", pattern>;
class T1JTI<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
- : Thumb1I<oops, iops, AddrModeNone, SizeSpecial, itin, asm, "", pattern>,
- Encoding;
+ : Thumb1I<oops, iops, AddrModeNone, SizeSpecial, itin, asm, "", pattern>;
// Two-address instructions
class T1It<dag oops, dag iops, InstrItinClass itin,
InstrItinClass itin, string opc, string asm, list<dag> pattern>
: Thumb1pI<oops, iops, AddrModeT1_s, Size2Bytes, itin, opc, asm, "", pattern>;
+class Encoding16 : Encoding {
+ let Inst{31-16} = 0x0000;
+}
+
// A6.2 16-bit Thumb instruction encoding
-class T1Encoding<bits<6> opcode> : Encoding {
+class T1Encoding<bits<6> opcode> : Encoding16 {
let Inst{15-10} = opcode;
}
// A6.2.1 Shift (immediate), add, subtract, move, and compare encoding.
-class T1General<bits<5> opcode> : Encoding {
+class T1General<bits<5> opcode> : Encoding16 {
let Inst{15-14} = 0b00;
let Inst{13-9} = opcode;
}
// A6.2.2 Data-processing encoding.
-class T1DataProcessing<bits<4> opcode> : Encoding {
+class T1DataProcessing<bits<4> opcode> : Encoding16 {
let Inst{15-10} = 0b010000;
let Inst{9-6} = opcode;
}
// A6.2.3 Special data instructions and branch and exchange encoding.
-class T1Special<bits<4> opcode> : Encoding {
+class T1Special<bits<4> opcode> : Encoding16 {
let Inst{15-10} = 0b010001;
let Inst{9-6} = opcode;
}
// A6.2.4 Load/store single data item encoding.
-class T1LoadStore<bits<4> opA, bits<3> opB> : Encoding {
+class T1LoadStore<bits<4> opA, bits<3> opB> : Encoding16 {
let Inst{15-12} = opA;
let Inst{11-9} = opB;
}
class T1LdStSP<bits<3> opB> : T1LoadStore<0b1001, opB>; // SP relative
// A6.2.5 Miscellaneous 16-bit instructions encoding.
-class T1Misc<bits<7> opcode> : Encoding {
+class T1Misc<bits<7> opcode> : Encoding16 {
let Inst{15-12} = 0b1011;
let Inst{11-5} = opcode;
}
def tBR_JTr : T1JTI<(outs),
(ins tGPR:$target, jtblock_operand:$jt, i32imm:$id),
IIC_Br, "mov\tpc, $target\n\t.align\t2\n$jt",
- [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>;
+ [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
+ Encoding16 {
+ let Inst{15-7} = 0b010001101;
+ let Inst{2-0} = 0b111;
+ }
}
}
T1Special<0b1000>;
let Defs = [CPSR] in
def tMOVSr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
- "movs\t$dst, $src", []>, Encoding {
+ "movs\t$dst, $src", []>, Encoding16 {
let Inst{15-6} = 0b0000000000;
}