[mips][microMIPSr6] Implement ADDIUPC and LWPC instructions

This patch implements ADDIUPC and LWPC instructions using mapping.

Differential Revision: http://reviews.llvm.org/D8415


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236852 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MicroMips32r6InstrFormats.td

@@ -70,3 +70,15 @@ class ADDI_FM_MMR6<string instr_asm, bits<6> op> : MMR6Arch<instr_asm> {
   let Inst{20-16} = rs;
   let Inst{15-0}  = imm16;
 }
+
+class PCREL19_FM_MMR6<bits<2> funct> : MipsR6Inst {
+  bits<5> rt;
+  bits<19> imm;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0b011110;
+  let Inst{25-21} = rt;
+  let Inst{20-19} = funct;
+  let Inst{18-0}  = imm;
+}

lib/Target/Mips/MicroMips32r6InstrInfo.td

@@ -19,12 +19,14 @@
 class ADD_MMR6_ENC : ARITH_FM_MMR6<"add", 0x110>;
 class ADDIU_MMR6_ENC : ADDI_FM_MMR6<"addiu", 0xc>;
 class ADDU_MMR6_ENC : ARITH_FM_MMR6<"addu", 0x150>;
+class ADDIUPC_MMR6_ENC : PCREL19_FM_MMR6<0b00>;
 class BALC_MMR6_ENC  : BRANCH_OFF26_FM<0b101101>;
 class BC_MMR6_ENC : BRANCH_OFF26_FM<0b100101>;
 class BITSWAP_MMR6_ENC : POOL32A_BITSWAP_FM_MMR6<0b101100>;
 class CACHE_MMR6_ENC : CACHE_PREF_FM_MMR6<0b001000, 0b0110>;
 class JIALC_MMR6_ENC : JMP_IDX_COMPACT_FM<0b100000>;
 class JIC_MMR6_ENC   : JMP_IDX_COMPACT_FM<0b101000>;
+class LWPC_MMR6_ENC  : PCREL19_FM_MMR6<0b01>;
 class MUL_MMR6_ENC : ARITH_FM_MMR6<"mul", 0x18>;
 class MUH_MMR6_ENC : ARITH_FM_MMR6<"muh", 0x58>;
 class MULU_MMR6_ENC : ARITH_FM_MMR6<"mulu", 0x98>;
@@ -107,6 +109,17 @@ class JIC_MMR6_DESC : JMP_MMR6_IDX_COMPACT_DESC_BASE<"jic", jmpoffset16,
   list<Register> Defs = [AT];
 }
 
+class PCREL_MMR6_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
+                           Operand ImmOpnd> : MMR6Arch<instr_asm> {
+  dag OutOperandList = (outs GPROpnd:$rt);
+  dag InOperandList = (ins ImmOpnd:$imm);
+  string AsmString = !strconcat(instr_asm, "\t$rt, $imm");
+  list<dag> Pattern = [];
+}
+
+class ADDIUPC_MMR6_DESC : PCREL_MMR6_DESC_BASE<"addiupc", GPR32Opnd, simm19_lsl2>;
+class LWPC_MMR6_DESC: PCREL_MMR6_DESC_BASE<"lwpc", GPR32Opnd, simm19_lsl2>;
+
 //===----------------------------------------------------------------------===//
 //
 // Instruction Definitions
@@ -117,6 +130,8 @@ let DecoderNamespace = "MicroMips32r6" in {
 def ADD_MMR6 : StdMMR6Rel, ADD_MMR6_DESC, ADD_MMR6_ENC, ISA_MICROMIPS32R6;
 def ADDIU_MMR6 : StdMMR6Rel, ADDIU_MMR6_DESC, ADDIU_MMR6_ENC, ISA_MICROMIPS32R6;
 def ADDU_MMR6 : StdMMR6Rel, ADDU_MMR6_DESC, ADDU_MMR6_ENC, ISA_MICROMIPS32R6;
+def ADDIUPC_MMR6 : R6MMR6Rel, ADDIUPC_MMR6_ENC, ADDIUPC_MMR6_DESC,
+                   ISA_MICROMIPS32R6;
 def BALC_MMR6 : R6MMR6Rel, BALC_MMR6_ENC, BALC_MMR6_DESC, ISA_MICROMIPS32R6;
 def BC_MMR6 : R6MMR6Rel, BC_MMR6_ENC, BC_MMR6_DESC, ISA_MICROMIPS32R6;
 def BITSWAP_MMR6 : R6MMR6Rel, BITSWAP_MMR6_ENC, BITSWAP_MMR6_DESC,
@@ -124,6 +139,7 @@ def BITSWAP_MMR6 : R6MMR6Rel, BITSWAP_MMR6_ENC, BITSWAP_MMR6_DESC,
 def CACHE_MMR6 : R6MMR6Rel, CACHE_MMR6_ENC, CACHE_MMR6_DESC, ISA_MICROMIPS32R6;
 def JIALC_MMR6 : R6MMR6Rel, JIALC_MMR6_ENC, JIALC_MMR6_DESC, ISA_MICROMIPS32R6;
 def JIC_MMR6 : R6MMR6Rel, JIC_MMR6_ENC, JIC_MMR6_DESC, ISA_MICROMIPS32R6;
+def LWPC_MMR6 : R6MMR6Rel, LWPC_MMR6_ENC, LWPC_MMR6_DESC, ISA_MICROMIPS32R6;
 def MUL_MMR6 : R6MMR6Rel, MUL_MMR6_DESC, MUL_MMR6_ENC, ISA_MICROMIPS32R6;
 def MUH_MMR6 : R6MMR6Rel, MUH_MMR6_DESC, MUH_MMR6_ENC, ISA_MICROMIPS32R6;
 def MULU_MMR6 : R6MMR6Rel, MULU_MMR6_DESC, MULU_MMR6_ENC, ISA_MICROMIPS32R6;

lib/Target/Mips/Mips32r6InstrInfo.td

@@ -243,7 +243,7 @@ multiclass CMP_CC_M <FIELD_CMP_FORMAT Format, string Typestr,
 //===----------------------------------------------------------------------===//
 
 class PCREL_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
-                      Operand ImmOpnd> {
+                      Operand ImmOpnd> : MipsR6Arch<instr_asm> {
   dag OutOperandList = (outs GPROpnd:$rs);
   dag InOperandList = (ins ImmOpnd:$imm);
   string AsmString = !strconcat(instr_asm, "\t$rs, $imm");
@@ -645,7 +645,7 @@ class SDBBP_R6_DESC {
 //
 //===----------------------------------------------------------------------===//
 
-def ADDIUPC : ADDIUPC_ENC, ADDIUPC_DESC, ISA_MIPS32R6;
+def ADDIUPC : R6MMR6Rel, ADDIUPC_ENC, ADDIUPC_DESC, ISA_MIPS32R6;
 def ALIGN : ALIGN_ENC, ALIGN_DESC, ISA_MIPS32R6;
 def ALUIPC : ALUIPC_ENC, ALUIPC_DESC, ISA_MIPS32R6;
 def AUI : AUI_ENC, AUI_DESC, ISA_MIPS32R6;
@@ -694,7 +694,7 @@ def LDC2_R6 : LDC2_R6_ENC, LDC2_R6_DESC, ISA_MIPS32R6;
 def LL_R6 : LL_R6_ENC, LL_R6_DESC, ISA_MIPS32R6;
 def LSA_R6 : LSA_R6_ENC, LSA_R6_DESC, ISA_MIPS32R6;
 def LWC2_R6 : LWC2_R6_ENC, LWC2_R6_DESC, ISA_MIPS32R6;
-def LWPC : LWPC_ENC, LWPC_DESC, ISA_MIPS32R6;
+def LWPC : R6MMR6Rel, LWPC_ENC, LWPC_DESC, ISA_MIPS32R6;
 def LWUPC : LWUPC_ENC, LWUPC_DESC, ISA_MIPS32R6;
 def MADDF_S : MADDF_S_ENC, MADDF_S_DESC, ISA_MIPS32R6, HARDFLOAT;
 def MADDF_D : MADDF_D_ENC, MADDF_D_DESC, ISA_MIPS32R6, HARDFLOAT;