[mips][microMIPSr6] Implement JIALC and JIC instructions

[jkolek]

Summary

This patch implements JIALC and JIC instructions using mapping.

[zoran.jovanovic]

lib/Target/Mips/MicroMips32r6InstrInfo.td

22

Opcode has changed.
Now it should be: 100000.

[zoran.jovanovic]

LGTM.

lib/Target/Mips/MicroMips32r6InstrInfo.td

 //===----------------------------------------------------------------------===//
 //
 // Instruction Encodings
 //
 //===----------------------------------------------------------------------===//
 
 class BALC_MMR6_ENC  : BRANCH_OFF26_FM<0b101101>;
 class BC_MMR6_ENC : BRANCH_OFF26_FM<0b100101>;
+class JIALC_MMR6_ENC : JMP_IDX_COMPACT_FM<0b101001>;
+class JIC_MMR6_ENC   : JMP_IDX_COMPACT_FM<0b101000>;
 
 //===----------------------------------------------------------------------===//
 //
 // Instruction Descriptions
 //
 //===----------------------------------------------------------------------===//
 
 class BC_MMR6_DESC_BASE<string instr_asm, DAGOperand opnd>
     : BRANCH_DESC_BASE, MMR6Arch<instr_asm> {
   dag InOperandList = (ins opnd:$offset);
   dag OutOperandList = (outs);
   string AsmString = !strconcat(instr_asm, "\t$offset");
   bit isBarrier = 1;
 }
 
 class BALC_MMR6_DESC : BC_MMR6_DESC_BASE<"balc", brtarget26> {
   bit isCall = 1;
   list<Register> Defs = [RA];
 }
 class BC_MMR6_DESC : BC_MMR6_DESC_BASE<"bc", brtarget26>;
 
+class JMP_MMR6_IDX_COMPACT_DESC_BASE<string opstr, DAGOperand opnd,
+                                     RegisterOperand GPROpnd>
+    : MMR6Arch<opstr> {
+  dag InOperandList = (ins GPROpnd:$rt, opnd:$offset);
+  string AsmString = !strconcat(opstr, "\t$rt, $offset");
+  list<dag> Pattern = [];
+  bit isTerminator = 1;
+  bit hasDelaySlot = 0;
+}
+
+class JIALC_MMR6_DESC : JMP_MMR6_IDX_COMPACT_DESC_BASE<"jialc", calloffset16,
+                                                       GPR32Opnd> {
+  bit isCall = 1;
+  list<Register> Defs = [RA];
+}
+
+class JIC_MMR6_DESC : JMP_MMR6_IDX_COMPACT_DESC_BASE<"jic", jmpoffset16,
+                                                     GPR32Opnd> {
+  bit isBarrier = 1;
+  list<Register> Defs = [AT];
+}
+
 //===----------------------------------------------------------------------===//
 //
 // Instruction Definitions
 //
 //===----------------------------------------------------------------------===//
 
 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 JIALC_MMR6 : R6MMR6Rel, JIALC_MMR6_ENC, JIALC_MMR6_DESC, ISA_MICROMIPS32R6;
+def JIC_MMR6 : R6MMR6Rel, JIC_MMR6_ENC, JIC_MMR6_DESC, ISA_MICROMIPS32R6;

lib/Target/Mips/Mips32r6InstrInfo.td

 
 class BC2EQZ_DESC : COP2_BCCZ_DESC_BASE<"bc2eqz $ct, $offset">;
 class BC2NEZ_DESC : COP2_BCCZ_DESC_BASE<"bc2nez $ct, $offset">;
 
 class BOVC_DESC   : CMP_BC_DESC_BASE<"bovc", brtarget, GPR32Opnd>;
 class BNVC_DESC   : CMP_BC_DESC_BASE<"bnvc", brtarget, GPR32Opnd>;
 
 class JMP_IDX_COMPACT_DESC_BASE<string opstr, DAGOperand opnd,
-                                RegisterOperand GPROpnd> {
+                                RegisterOperand GPROpnd>
+    : MipsR6Arch<opstr> {
   dag InOperandList = (ins GPROpnd:$rt, opnd:$offset);
   string AsmString = !strconcat(opstr, "\t$rt, $offset");
   list<dag> Pattern = [];
   bit isTerminator = 1;
   bit hasDelaySlot = 0;
 }
 
 class JIALC_DESC : JMP_IDX_COMPACT_DESC_BASE<"jialc", calloffset16,

 def CLASS_D : CLASS_D_ENC, CLASS_D_DESC, ISA_MIPS32R6;
 def CLASS_S : CLASS_S_ENC, CLASS_S_DESC, ISA_MIPS32R6;
 def CLO_R6 : CLO_R6_ENC, CLO_R6_DESC, ISA_MIPS32R6;
 def CLZ_R6 : CLZ_R6_ENC, CLZ_R6_DESC, ISA_MIPS32R6;
 defm S : CMP_CC_M<FIELD_CMP_FORMAT_S, "s", FGR32Opnd>;
 defm D : CMP_CC_M<FIELD_CMP_FORMAT_D, "d", FGR64Opnd>;
 def DIV : DIV_ENC, DIV_DESC, ISA_MIPS32R6;
 def DIVU : DIVU_ENC, DIVU_DESC, ISA_MIPS32R6;
-def JIALC : JIALC_ENC, JIALC_DESC, ISA_MIPS32R6;
-def JIC : JIC_ENC, JIC_DESC, ISA_MIPS32R6;
+def JIALC : R6MMR6Rel, JIALC_ENC, JIALC_DESC, ISA_MIPS32R6;
+def JIC : R6MMR6Rel, JIC_ENC, JIC_DESC, ISA_MIPS32R6;
 def JR_HB_R6 : JR_HB_R6_ENC, JR_HB_R6_DESC, ISA_MIPS32R6;
 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 LWUPC : LWUPC_ENC, LWUPC_DESC, ISA_MIPS32R6;
 def MADDF_S : MADDF_S_ENC, MADDF_S_DESC, ISA_MIPS32R6;

test/MC/Mips/micromips32r6/valid.s

 # RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 -mattr=micromips | FileCheck %s
 
   .set noat
   balc 14572256            # CHECK: balc 14572256       # encoding: [0xb4,0x37,0x96,0xb8]
   bc 14572256              # CHECK: bc 14572256         # encoding: [0x94,0x37,0x96,0xb8]
+  jialc $5, 256            # CHECK: jialc $5, 256       # encoding: [0xa4,0x05,0x01,0x00]
+  jic   $5, 256            # CHECK: jic $5, 256         # encoding: [0xa0,0x05,0x01,0x00]