[mips][mips64r6] Add align and dalign

Summary: Depends on D3689

Reviewers: vmedic, zoran.jovanovic, jkolek

Reviewed By: jkolek

Differential Revision: http://reviews.llvm.org/D3728

llvm-svn: 208872

llvm/lib/Target/Mips/Mips32r6InstrFormats.td

@@ -29,6 +29,7 @@ def OPGROUP_DAUI    { bits<6> Value = 0b011101; }
 def OPGROUP_PCREL   { bits<6> Value = 0b111011; }
 def OPGROUP_REGIMM  { bits<6> Value = 0b000001; }
 def OPGROUP_SPECIAL { bits<6> Value = 0b000000; }
+def OPGROUP_SPECIAL3 { bits<6> Value = 0b011111; }
 
 class OPCODE2<bits<2> Val> {
   bits<2> Value = Val;
@@ -43,6 +44,12 @@ def OPCODE5_AUIPC  : OPCODE5<0b11110>;
 def OPCODE5_DAHI : OPCODE5<0b00110>;
 def OPCODE5_DATI : OPCODE5<0b11110>;
 
+class OPCODE6<bits<6> Val> {
+  bits<6> Value = Val;
+}
+def OPCODE6_ALIGN  : OPCODE6<0b100000>;
+def OPCODE6_DALIGN : OPCODE6<0b100100>;
+
 class FIELD_FMT<bits<5> Val> {
   bits<5> Value = Val;
 }
@@ -126,6 +133,40 @@ class SPECIAL_3R_FM<bits<5> mulop, bits<6> funct> : MipsR6Inst {
   let Inst{5-0}   = funct;
 }
 
+class SPECIAL3_ALIGN_FM<OPCODE6 Operation> : MipsR6Inst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+  bits<2> bp;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = OPGROUP_SPECIAL3.Value;
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-8}  = 0b010;
+  let Inst{7-6}   = bp;
+  let Inst{5-0}   = Operation.Value;
+}
+
+class SPECIAL3_DALIGN_FM<OPCODE6 Operation> : MipsR6Inst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+  bits<3> bp;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = OPGROUP_SPECIAL3.Value;
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-9}  = 0b01;
+  let Inst{8-6}   = bp;
+  let Inst{5-0}   = Operation.Value;
+}
+
 class REGIMM_FM<OPCODE5 Operation> : MipsR6Inst {
   bits<5> rs;
   bits<16> imm;

llvm/lib/Target/Mips/Mips32r6InstrInfo.td

@@ -59,6 +59,7 @@ include "Mips32r6InstrFormats.td"
 //===----------------------------------------------------------------------===//
 
 class ADDIUPC_ENC : PCREL19_FM<OPCODE2_ADDIUPC>;
+class ALIGN_ENC  : SPECIAL3_ALIGN_FM<OPCODE6_ALIGN>;
 class ALUIPC_ENC : PCREL16_FM<OPCODE5_ALUIPC>;
 class AUI_ENC    : AUI_FM;
 class AUIPC_ENC  : PCREL16_FM<OPCODE5_AUIPC>;
@@ -88,6 +89,16 @@ class ADDIUPC_DESC_BASE<string instr_asm, RegisterOperand GPROpnd> {
 
 class ADDIUPC_DESC : ADDIUPC_DESC_BASE<"addiupc", GPR32Opnd>;
 
+class ALIGN_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
+                      Operand ImmOpnd> {
+  dag OutOperandList = (outs GPROpnd:$rd);
+  dag InOperandList = (ins GPROpnd:$rs, GPROpnd:$rt, ImmOpnd:$bp);
+  string AsmString = !strconcat(instr_asm, "\t$rd, $rs, $rt, $bp");
+  list<dag> Pattern = [];
+}
+
+class ALIGN_DESC : ALIGN_DESC_BASE<"align", GPR32Opnd, uimm2>;
+
 class ALUIPC_DESC_BASE<string instr_asm, RegisterOperand GPROpnd> {
   dag OutOperandList = (outs GPROpnd:$rs);
   dag InOperandList = (ins simm16:$imm);
@@ -149,7 +160,7 @@ class SEL_S_DESC : SEL_DESC_BASE<"sel.s", FGR32Opnd>;
 //===----------------------------------------------------------------------===//
 
 def ADDIUPC : ADDIUPC_ENC, ADDIUPC_DESC, ISA_MIPS32R6;
-def ALIGN; // Known as as BALIGN in DSP ASE
+def ALIGN : ALIGN_ENC, ALIGN_DESC, ISA_MIPS32R6;
 def ALUIPC : ALUIPC_ENC, ALUIPC_DESC, ISA_MIPS32R6;
 def AUI : AUI_ENC, AUI_DESC, ISA_MIPS32R6;
 def AUIPC : AUIPC_ENC, AUIPC_DESC, ISA_MIPS32R6;

llvm/lib/Target/Mips/Mips64r6InstrInfo.td

@@ -25,6 +25,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+class DALIGN_ENC  : SPECIAL3_DALIGN_FM<OPCODE6_DALIGN>;
 class DAUI_ENC    : DAUI_FM;
 class DAHI_ENC    : REGIMM_FM<OPCODE5_DAHI>;
 class DATI_ENC    : REGIMM_FM<OPCODE5_DATI>;
@@ -43,6 +44,7 @@ class DMULU_ENC   : SPECIAL_3R_FM<0b00010, 0b111001>;
 //
 //===----------------------------------------------------------------------===//
 
+class DALIGN_DESC  : ALIGN_DESC_BASE<"dalign", GPR64Opnd, uimm3>;
 class DAHI_DESC    : AUI_DESC_BASE<"dahi", GPR64Opnd>;
 class DATI_DESC    : AUI_DESC_BASE<"dati", GPR64Opnd>;
 class DAUI_DESC    : AUI_DESC_BASE<"daui", GPR64Opnd>;
@@ -62,7 +64,7 @@ class DMULU_DESC   : MUL_R6_DESC_BASE<"dmulu", GPR64Opnd>;
 //===----------------------------------------------------------------------===//
 
 def DAHI : DAHI_ENC, DAHI_DESC, ISA_MIPS64R6;
-def DALIGN;
+def DALIGN : DALIGN_ENC, DALIGN_DESC, ISA_MIPS64R6;
 def DATI : DATI_ENC, DATI_DESC, ISA_MIPS64R6;
 def DAUI : DAUI_ENC, DAUI_DESC, ISA_MIPS64R6;
 def DBITSWAP;

llvm/lib/Target/Mips/MipsInstrInfo.td

@@ -340,6 +340,14 @@ def uimmz       : Operand<i32> {
 }
 
 // Unsigned Operand
+def uimm2 : Operand<i32> {
+  let PrintMethod = "printUnsignedImm";
+}
+
+def uimm3 : Operand<i32> {
+  let PrintMethod = "printUnsignedImm";
+}
+
 def uimm5       : Operand<i32> {
   let PrintMethod = "printUnsignedImm";
 }

llvm/lib/Target/Mips/MipsMSAInstrInfo.td

@@ -65,10 +65,6 @@ def MipsVExtractZExt : SDNode<"MipsISD::VEXTRACT_ZEXT_ELT",
 
 // Operands
 
-def uimm2 : Operand<i32> {
-  let PrintMethod = "printUnsignedImm";
-}
-
 // The immediate of an LSA instruction needs special handling
 // as the encoded value should be subtracted by one.
 def uimm2LSAAsmOperand : AsmOperandClass {
@@ -84,10 +80,6 @@ def LSAImm : Operand<i32> {
   let ParserMatchClass = uimm2LSAAsmOperand;
 }
 
-def uimm3 : Operand<i32> {
-  let PrintMethod = "printUnsignedImm8";
-}
-
 def uimm4 : Operand<i32> {
   let PrintMethod = "printUnsignedImm8";
 }

llvm/test/MC/Mips/mips32r6/valid.s

@@ -5,6 +5,7 @@
         .set noat
         # FIXME: Add the instructions carried forward from older ISA's
         addiupc $4, 100          # CHECK: addiupc $4, 100     # encoding: [0xec,0x80,0x00,0x19]
+        align   $4, $2, $3, 2    # CHECK: align $4, $2, $3, 2 # encoding: [0x7c,0x43,0x22,0xa0]
         aluipc  $3, 56           # CHECK: aluipc $3, 56       # encoding: [0xec,0x7f,0x00,0x38]
         aui     $3,$2,-23        # CHECK: aui $3, $2, -23     # encoding: [0x3c,0x62,0xff,0xe9]
         auipc   $3, -1           # CHECK: auipc $3, -1        # encoding: [0xec,0x7e,0xff,0xff]

llvm/test/MC/Mips/mips64r6/valid.s

@@ -5,9 +5,11 @@
         .set noat
         # FIXME: Add the instructions carried forward from older ISA's
         addiupc $4, 100          # CHECK: addiupc $4, 100     # encoding: [0xec,0x80,0x00,0x19]
+        align   $4, $2, $3, 2    # CHECK: align $4, $2, $3, 2 # encoding: [0x7c,0x43,0x22,0xa0]
         aluipc  $3, 56           # CHECK: aluipc $3, 56       # encoding: [0xec,0x7f,0x00,0x38]
         aui     $3,$2,-23        # CHECK: aui $3, $2, -23     # encoding: [0x3c,0x62,0xff,0xe9]
         auipc   $3, -1           # CHECK: auipc $3, -1        # encoding: [0xec,0x7e,0xff,0xff]
+        dalign  $4,$2,$3,5       # CHECK: dalign $4, $2, $3, 5 # encoding: [0x7c,0x43,0x23,0x64]
         daui    $3,$2,0x1234     # CHECK: daui $3, $2, 4660  # encoding: [0x74,0x62,0x12,0x34]
         dahi    $3,$3,0x5678     # CHECK: dahi $3, $3, 22136 # encoding: [0x04,0x66,0x56,0x78]
         dati    $3,$3,0xabcd     # CHECK: dati $3, $3, 43981 # encoding: [0x04,0x7e,0xab,0xcd]