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-rw-r--r--lib/Target/MBlaze/MBlazeInstrFormats.td209
1 files changed, 44 insertions, 165 deletions
diff --git a/lib/Target/MBlaze/MBlazeInstrFormats.td b/lib/Target/MBlaze/MBlazeInstrFormats.td
index 28e8e44022..595ef1da61 100644
--- a/lib/Target/MBlaze/MBlazeInstrFormats.td
+++ b/lib/Target/MBlaze/MBlazeInstrFormats.td
@@ -7,6 +7,26 @@
//
//===----------------------------------------------------------------------===//
+// Format specifies the encoding used by the instruction. This is part of the
+// ad-hoc solution used to emit machine instruction encodings by our machine
+// code emitter.
+class Format<bits<6> val> {
+ bits<6> Value = val;
+}
+
+def FPseudo : Format<0>;
+def FRRR : Format<1>;
+def FRRI : Format<2>;
+def FRIR : Format<3>;
+def FFSL : Format<4>;
+def FFSLD : Format<5>;
+def FFSLT : Format<6>;
+def FFSLTD : Format<7>;
+def FR : Format<8>;
+def FI : Format<9>;
+def FRR : Format<10>;
+def FRI : Format<11>;
+
//===----------------------------------------------------------------------===//
// Describe MBlaze instructions format
//
@@ -21,14 +41,15 @@
//===----------------------------------------------------------------------===//
// Generic MBlaze Format
-class MBlazeInst<dag outs, dag ins, string asmstr, list<dag> pattern,
- InstrItinClass itin> : Instruction
+class MBlazeInst<bits<6> op, Format form, dag outs, dag ins, string asmstr,
+ list<dag> pattern, InstrItinClass itin> : Instruction
{
- field bits<32> Inst;
-
let Namespace = "MBlaze";
+ field bits<32> Inst;
- bits<6> opcode;
+ bits<6> opcode = op;
+ Format Form = form;
+ bits<6> FormBits = Form.Value;
// Top 6 bits are the 'opcode' field
let Inst{0-5} = opcode;
@@ -39,13 +60,16 @@ class MBlazeInst<dag outs, dag ins, string asmstr, list<dag> pattern,
let AsmString = asmstr;
let Pattern = pattern;
let Itinerary = itin;
+
+ // TSFlags layout should be kept in sync with MBlazeInstrInfo.h.
+ let TSFlags{5-0} = FormBits;
}
//===----------------------------------------------------------------------===//
// Pseudo instruction class
//===----------------------------------------------------------------------===//
class MBlazePseudo<dag outs, dag ins, string asmstr, list<dag> pattern>:
- MBlazeInst<outs, ins, asmstr, pattern, IIPseudo>;
+ MBlazeInst<0x0, FPseudo, outs, ins, asmstr, pattern, IIPseudo>;
//===----------------------------------------------------------------------===//
// Type A instruction class in MBlaze : <|opcode|rd|ra|rb|flags|>
@@ -53,194 +77,49 @@ class MBlazePseudo<dag outs, dag ins, string asmstr, list<dag> pattern>:
class TA<bits<6> op, bits<11> flags, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
+ MBlazeInst<op,FRRR,outs, ins, asmstr, pattern, itin>
{
bits<5> rd;
bits<5> ra;
bits<5> rb;
- let opcode = op;
-
let Inst{6-10} = rd;
let Inst{11-15} = ra;
let Inst{16-20} = rb;
let Inst{21-31} = flags;
}
-class TAI<bits<6> op, dag outs, dag ins, string asmstr,
- list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> rd;
- bits<5> ra;
- bits<16> imm16;
-
- let opcode = op;
-
- let Inst{6-10} = rd;
- let Inst{11-15} = ra;
- let Inst{16-31} = imm16;
-}
-
-class TIMM<bits<6> op, dag outs, dag ins, string asmstr,
- list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
- bits<16> imm16;
-
- let opcode = op;
-
- let Inst{6-15} = 0;
- let Inst{16-31} = imm16;
-}
-
-class TADDR<bits<6> op, dag outs, dag ins, string asmstr,
- list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<26> addr;
-
- let opcode = op;
-
- let Inst{6-31} = addr;
-}
-
//===----------------------------------------------------------------------===//
// Type B instruction class in MBlaze : <|opcode|rd|ra|immediate|>
//===----------------------------------------------------------------------===//
class TB<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
+ MBlazeInst<op, FRRI, outs, ins, asmstr, pattern, itin>
{
bits<5> rd;
bits<5> ra;
bits<16> imm16;
- let opcode = op;
-
let Inst{6-10} = rd;
let Inst{11-15} = ra;
let Inst{16-31} = imm16;
}
//===----------------------------------------------------------------------===//
-// Float instruction class in MBlaze : <|opcode|rd|ra|flags|>
+// Type B instruction class in MBlaze but with the operands reversed in
+// the LLVM DAG : <|opcode|rd|ra|immediate|>
//===----------------------------------------------------------------------===//
+class TBR<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
+ InstrItinClass itin> :
+ TB<op, outs, ins, asmstr, pattern, itin> {
+ bits<5> rrd;
+ bits<16> rimm16;
+ bits<5> rra;
-class TF<bits<6> op, bits<11> flags, dag outs, dag ins, string asmstr,
- list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> rd;
- bits<5> ra;
-
- let opcode = op;
-
- let Inst{6-10} = rd;
- let Inst{11-15} = ra;
- let Inst{16-20} = 0;
- let Inst{21-31} = flags;
-}
-
-//===----------------------------------------------------------------------===//
-// Branch instruction class in MBlaze : <|opcode|rd|br|ra|flags|>
-//===----------------------------------------------------------------------===//
-
-class TBR<bits<6> op, bits<5> br, bits<11> flags, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
-
- let opcode = op;
-
- let Inst{6-10} = 0;
- let Inst{11-15} = br;
- let Inst{16-20} = ra;
- let Inst{21-31} = flags;
-}
-
-class TBRC<bits<6> op, bits<5> br, bits<11> flags, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
- bits<5> rb;
-
- let opcode = op;
-
- let Inst{6-10} = br;
- let Inst{11-15} = ra;
- let Inst{16-20} = rb;
- let Inst{21-31} = flags;
-}
-
-class TBRL<bits<6> op, bits<5> br, bits<11> flags, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
-
- let opcode = op;
-
- let Inst{6-10} = 0xF;
- let Inst{11-15} = br;
- let Inst{16-20} = ra;
- let Inst{21-31} = flags;
-}
-
-class TBRI<bits<6> op, bits<5> br, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<16> imm16;
-
- let opcode = op;
-
- let Inst{6-10} = 0;
- let Inst{11-15} = br;
- let Inst{16-31} = imm16;
-}
-
-class TBRLI<bits<6> op, bits<5> br, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<16> imm16;
-
- let opcode = op;
-
- let Inst{6-10} = 0xF;
- let Inst{11-15} = br;
- let Inst{16-31} = imm16;
-}
-
-class TBRCI<bits<6> op, bits<5> br, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
- bits<16> imm16;
-
- let opcode = op;
-
- let Inst{6-10} = br;
- let Inst{11-15} = ra;
- let Inst{16-31} = imm16;
-}
-
-class TRET<bits<6> op, dag outs, dag ins,
- string asmstr, list<dag> pattern, InstrItinClass itin> :
- MBlazeInst<outs, ins, asmstr, pattern, itin>
-{
- bits<5> ra;
- bits<16> imm16;
-
- let opcode = op;
+ let Form = FRIR;
- let Inst{6-10} = 0x10;
- let Inst{11-15} = ra;
- let Inst{16-31} = imm16;
+ let rd = rrd;
+ let ra = rra;
+ let imm16 = rimm16;
}
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