[PATCH] [mips][microMIPSr6] Implement ALUIPC and AUIPC instructions

[Jozef Kolek]

http://reviews.llvm.org/D8441

Files:
  lib/Target/Mips/MicroMips32r6InstrFormats.td
  lib/Target/Mips/MicroMips32r6InstrInfo.td
  lib/Target/Mips/Mips32r6InstrInfo.td
  test/MC/Mips/micromips32r6/valid.s

Index: lib/Target/Mips/MicroMips32r6InstrFormats.td
===================================================================
--- lib/Target/Mips/MicroMips32r6InstrFormats.td
+++ lib/Target/Mips/MicroMips32r6InstrFormats.td
@@ -27,3 +27,15 @@
   let Inst{20-19} = funct;
   let Inst{18-0}  = imm;
 }
+
+class PCREL16_FM_MMR6<bits<5> funct> : MipsR6Inst {
+  bits<5> rt;
+  bits<16> imm;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0b011110;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = funct;
+  let Inst{15-0}  = imm;
+}
Index: lib/Target/Mips/MicroMips32r6InstrInfo.td
===================================================================
--- lib/Target/Mips/MicroMips32r6InstrInfo.td
+++ lib/Target/Mips/MicroMips32r6InstrInfo.td
@@ -17,6 +17,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+class ALUIPC_MMR6_ENC : PCREL16_FM_MMR6<0b11111>;
+class AUIPC_MMR6_ENC  : PCREL16_FM_MMR6<0b11110>;
 class ADDIUPC_MMR6_ENC : PCREL19_FM_MMR6<0b00>;
 class BALC_MMR6_ENC  : BRANCH_OFF26_FM<0b101101>;
 class BC_MMR6_ENC : BRANCH_OFF26_FM<0b100101>;
@@ -30,6 +32,17 @@
 //
 //===----------------------------------------------------------------------===//
 
+class ALUIPC_MMR6_DESC_BASE<string instr_asm, RegisterOperand GPROpnd>
+    : MMR6Arch<instr_asm> {
+  dag OutOperandList = (outs GPROpnd:$rt);
+  dag InOperandList = (ins simm16:$imm);
+  string AsmString = !strconcat(instr_asm, "\t$rt, $imm");
+  list<dag> Pattern = [];
+}
+
+class ALUIPC_MMR6_DESC : ALUIPC_MMR6_DESC_BASE<"aluipc", GPR32Opnd>;
+class AUIPC_MMR6_DESC : ALUIPC_MMR6_DESC_BASE<"auipc", GPR32Opnd>;
+
 class PCREL_MMR6_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
                            Operand ImmOpnd> : MMR6Arch<instr_asm> {
   dag OutOperandList = (outs GPROpnd:$rt);
@@ -83,6 +96,9 @@
 //
 //===----------------------------------------------------------------------===//
 
+def ALUIPC_MMR6 : R6MMR6Rel, ALUIPC_MMR6_ENC, ALUIPC_MMR6_DESC,
+                  ISA_MICROMIPS32R6;
+def AUIPC_MMR6 : R6MMR6Rel, AUIPC_MMR6_ENC, AUIPC_MMR6_DESC, 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;
Index: lib/Target/Mips/Mips32r6InstrInfo.td
===================================================================
--- lib/Target/Mips/Mips32r6InstrInfo.td
+++ lib/Target/Mips/Mips32r6InstrInfo.td
@@ -264,7 +264,8 @@
 
 class ALIGN_DESC : ALIGN_DESC_BASE<"align", GPR32Opnd, uimm2>;
 
-class ALUIPC_DESC_BASE<string instr_asm, RegisterOperand GPROpnd> {
+class ALUIPC_DESC_BASE<string instr_asm, RegisterOperand GPROpnd>
+    : MipsR6Arch<instr_asm> {
   dag OutOperandList = (outs GPROpnd:$rs);
   dag InOperandList = (ins simm16:$imm);
   string AsmString = !strconcat(instr_asm, "\t$rs, $imm");
@@ -646,9 +647,9 @@
 
 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 ALUIPC : R6MMR6Rel, ALUIPC_ENC, ALUIPC_DESC, ISA_MIPS32R6;
 def AUI : AUI_ENC, AUI_DESC, ISA_MIPS32R6;
-def AUIPC : AUIPC_ENC, AUIPC_DESC, ISA_MIPS32R6;
+def AUIPC : R6MMR6Rel, AUIPC_ENC, AUIPC_DESC, ISA_MIPS32R6;
 def BAL : BAL_ENC, BAL_DESC, ISA_MIPS32R6;
 def BALC : R6MMR6Rel, BALC_ENC, BALC_DESC, ISA_MIPS32R6;
 def BC1EQZ : BC1EQZ_ENC, BC1EQZ_DESC, ISA_MIPS32R6;
Index: test/MC/Mips/micromips32r6/valid.s
===================================================================
--- test/MC/Mips/micromips32r6/valid.s
+++ test/MC/Mips/micromips32r6/valid.s
@@ -1,6 +1,8 @@
 # RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 -mattr=micromips | FileCheck %s
 
   .set noat
+  aluipc $3, 56            # CHECK: aluipc $3, 56       # encoding: [0x78,0x7f,0x00,0x38]
+  auipc $3, -1             # CHECK: auipc $3, -1        # encoding: [0x78,0x7e,0xff,0xff]
   addiupc $4, 100          # CHECK: addiupc $4, 100     # encoding: [0x78,0x80,0x00,0x19]
   balc 14572256            # CHECK: balc 14572256       # encoding: [0xb4,0x37,0x96,0xb8]
   bc 14572256              # CHECK: bc 14572256         # encoding: [0x94,0x37,0x96,0xb8]

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