llvm/test/TableGen/GlobalISelEmitter-nested-subregs.td

   1 // RUN: llvm-tblgen %s -gen-global-isel -optimize-match-table=false -I %p/../../include -I %p/Common -o - | FileCheck %s
   2
   3 include "llvm/Target/Target.td"
   4 include "GlobalISelEmitterCommon.td"
   5
   6 let Namespace = "MyTarget" in {
   7
   8 def lo8  : SubRegIndex<8>;
   9 def hi8  : SubRegIndex<8, 8>;
  10 def lo16 : SubRegIndex<16>;
  11 def hi16 : SubRegIndex<16, 16>;
  12
  13 def a0bl : Register<"a0bl">;
  14 def a0bh : Register<"a0bh">;
  15 def a0wh : Register<"a0wh">;
  16
  17 } // Namespace = "MyTarget"
  18
  19 def a0wl: RegisterWithSubRegs<"a0", [a0bh, a0bl]> {
  20   let SubRegIndices = [hi8, lo8];
  21   let CoveredBySubRegs = 1;
  22 }
  23
  24 def a0: RegisterWithSubRegs<"a0", [a0wh, a0wl]> {
  25   let SubRegIndices = [hi16, lo16];
  26   let CoveredBySubRegs = 1;
  27 }
  28
  29 def A0b : RegisterClass<"MyTarget",  [i8],  8, (add a0bl)>;
  30 def A0w : RegisterClass<"MyTarget", [i16], 16, (add a0wl)>;
  31 def A0  : RegisterClass<"MyTarget", [i32], 32, (add a0)>;
  32
  33 // CHECK: GIM_CheckNumOperands, /*MI*/0, /*Expected*/2,
  34 // CHECK-NEXT: GIM_CheckOpcode, /*MI*/0, GIMT_Encode2(TargetOpcode::G_ANYEXT),
  35 // CHECK-NEXT: // MIs[0] DstI[dst]
  36 // CHECK-NEXT: GIM_RootCheckType, /*Op*/0, /*Type*/GILLT_s16,
  37 // CHECK-NEXT: GIM_RootCheckRegBankForClass, /*Op*/0, /*RC*/GIMT_Encode2(MyTarget::A0RegClassID),
  38 // CHECK-NEXT: // MIs[0] src
  39 // CHECK-NEXT: GIM_RootCheckType, /*Op*/1, /*Type*/GILLT_s8,
  40 // CHECK-NEXT: // (anyext:{ *:[i16] } i8:{ *:[i8] }:$src)  =>  (EXTRACT_SUBREG:{ *:[i16] } (INSERT_SUBREG:{ *:[i32] } (IMPLICIT_DEF:{ *:[i32] }), A0b:{ *:[i8] }:$src, lo8:{ *:[i32] }), lo16:{ *:[i32] })
  41 // CHECK-NEXT: GIR_MakeTempReg, /*TempRegID*/0, /*TypeID*/GILLT_s32,
  42 // CHECK-NEXT: GIR_MakeTempReg, /*TempRegID*/1, /*TypeID*/GILLT_s32,
  43 // CHECK-NEXT: GIR_BuildMI, /*InsnID*/2, /*Opcode*/GIMT_Encode2(TargetOpcode::IMPLICIT_DEF),
  44 // CHECK-NEXT: GIR_AddTempRegister, /*InsnID*/2, /*TempRegID*/1, /*TempRegFlags*/GIMT_Encode2(RegState::Define),
  45 // CHECK-NEXT: GIR_ConstrainSelectedInstOperands, /*InsnID*/2,
  46 // CHECK-NEXT: GIR_BuildMI, /*InsnID*/1, /*Opcode*/GIMT_Encode2(TargetOpcode::INSERT_SUBREG),
  47 // CHECK-NEXT: GIR_AddTempRegister, /*InsnID*/1, /*TempRegID*/0, /*TempRegFlags*/GIMT_Encode2(RegState::Define),
  48 // CHECK-NEXT: GIR_AddSimpleTempRegister, /*InsnID*/1, /*TempRegID*/1,
  49 // CHECK-NEXT: GIR_Copy, /*NewInsnID*/1, /*OldInsnID*/0, /*OpIdx*/1, // src
  50 // CHECK-NEXT: GIR_AddImm8, /*InsnID*/1, /*Imm*/3,
  51 // CHECK-NEXT: GIR_ConstrainOperandRC, /*InsnID*/1, /*Op*/0, GIMT_Encode2(MyTarget::A0RegClassID),
  52 // CHECK-NEXT: GIR_ConstrainOperandRC, /*InsnID*/1, /*Op*/1, GIMT_Encode2(MyTarget::A0RegClassID),
  53 // CHECK-NEXT: GIR_ConstrainOperandRC, /*InsnID*/1, /*Op*/2, GIMT_Encode2(MyTarget::A0bRegClassID),
  54 // CHECK-NEXT: GIR_BuildRootMI, /*Opcode*/GIMT_Encode2(TargetOpcode::COPY),
  55 // CHECK-NEXT: GIR_RootToRootCopy, /*OpIdx*/0, // DstI[dst]
  56 // CHECK-NEXT: GIR_AddTempSubRegister, /*InsnID*/0, /*TempRegID*/0, /*TempRegFlags*/GIMT_Encode2(0), GIMT_Encode2(MyTarget::lo16),
  57 // CHECK-NEXT: GIR_ConstrainOperandRC, /*InsnID*/0, /*Op*/0, GIMT_Encode2(MyTarget::A0wRegClassID),
  58 // CHECK-NEXT: GIR_ConstrainOperandRC, /*InsnID*/0, /*Op*/1, GIMT_Encode2(MyTarget::A0RegClassID),
  59 // CHECK-NEXT: // GIR_Coverage
  60 // CHECK-NEXT: GIR_EraseRootFromParent_Done,
  61 def : Pat<(i16 (anyext i8:$src)),
  62           (i16 (EXTRACT_SUBREG
  63                  (i32 (INSERT_SUBREG
  64                         (i32 (IMPLICIT_DEF)),
  65                         A0b:$src,
  66                         lo8)),
  67                  lo16))>;