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+//=====- SystemZOperands.td - SystemZ Operands defs ---------*- tblgen-*-=====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source 
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file describes the various SystemZ instruction operands.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Instruction Pattern Stuff.
+//===----------------------------------------------------------------------===//
+
+// SystemZ specific condition code. These correspond to CondCode in
+// SystemZ.h. They must be kept in synch.
+def SYSTEMZ_COND_O   : PatLeaf<(i8 0)>;
+def SYSTEMZ_COND_H   : PatLeaf<(i8 1)>;
+def SYSTEMZ_COND_NLE : PatLeaf<(i8 2)>;
+def SYSTEMZ_COND_L   : PatLeaf<(i8 3)>;
+def SYSTEMZ_COND_NHE : PatLeaf<(i8 4)>;
+def SYSTEMZ_COND_LH  : PatLeaf<(i8 5)>;
+def SYSTEMZ_COND_NE  : PatLeaf<(i8 6)>;
+def SYSTEMZ_COND_E   : PatLeaf<(i8 7)>;
+def SYSTEMZ_COND_NLH : PatLeaf<(i8 8)>;
+def SYSTEMZ_COND_HE  : PatLeaf<(i8 9)>;
+def SYSTEMZ_COND_NL  : PatLeaf<(i8 10)>;
+def SYSTEMZ_COND_LE  : PatLeaf<(i8 11)>;
+def SYSTEMZ_COND_NH  : PatLeaf<(i8 12)>;
+def SYSTEMZ_COND_NO  : PatLeaf<(i8 13)>;
+
+def LO8 : SDNodeXForm<imm, [{
+  // Transformation function: return low 8 bits.
+  return getI8Imm(N->getZExtValue() & 0x00000000000000FFULL);
+}]>;
+
+def LL16 : SDNodeXForm<imm, [{
+  // Transformation function: return low 16 bits.
+  return getI16Imm(N->getZExtValue() & 0x000000000000FFFFULL);
+}]>;
+
+def LH16 : SDNodeXForm<imm, [{
+  // Transformation function: return bits 16-31.
+  return getI16Imm((N->getZExtValue() & 0x00000000FFFF0000ULL) >> 16);
+}]>;
+
+def HL16 : SDNodeXForm<imm, [{
+  // Transformation function: return bits 32-47.
+  return getI16Imm((N->getZExtValue() & 0x0000FFFF00000000ULL) >> 32);
+}]>;
+
+def HH16 : SDNodeXForm<imm, [{
+  // Transformation function: return bits 48-63.
+  return getI16Imm((N->getZExtValue() & 0xFFFF000000000000ULL) >> 48);
+}]>;
+
+def LO32 : SDNodeXForm<imm, [{
+  // Transformation function: return low 32 bits.
+  return getI32Imm(N->getZExtValue() & 0x00000000FFFFFFFFULL);
+}]>;
+
+def HI32 : SDNodeXForm<imm, [{
+  // Transformation function: return bits 32-63.
+  return getI32Imm(N->getZExtValue() >> 32);
+}]>;
+
+def i32ll16 : PatLeaf<(i32 imm), [{
+  // i32ll16 predicate - true if the 32-bit immediate has only rightmost 16
+  // bits set.
+  return ((N->getZExtValue() & 0x000000000000FFFFULL) == N->getZExtValue());
+}], LL16>;
+
+def i32lh16 : PatLeaf<(i32 imm), [{
+  // i32lh16 predicate - true if the 32-bit immediate has only bits 16-31 set.
+  return ((N->getZExtValue() & 0x00000000FFFF0000ULL) == N->getZExtValue());
+}], LH16>;
+
+def i32ll16c : PatLeaf<(i32 imm), [{
+  // i32ll16c predicate - true if the 32-bit immediate has all bits 16-31 set.
+  return ((N->getZExtValue() | 0x00000000FFFF0000ULL) == N->getZExtValue());
+}], LL16>;
+
+def i32lh16c : PatLeaf<(i32 imm), [{
+  // i32lh16c predicate - true if the 32-bit immediate has all rightmost 16
+  //  bits set.
+  return ((N->getZExtValue() | 0x000000000000FFFFULL) == N->getZExtValue());
+}], LH16>;
+
+def i64ll16 : PatLeaf<(i64 imm), [{  
+  // i64ll16 predicate - true if the 64-bit immediate has only rightmost 16
+  // bits set.
+  return ((N->getZExtValue() & 0x000000000000FFFFULL) == N->getZExtValue());
+}], LL16>;
+
+def i64lh16 : PatLeaf<(i64 imm), [{  
+  // i64lh16 predicate - true if the 64-bit immediate has only bits 16-31 set.
+  return ((N->getZExtValue() & 0x00000000FFFF0000ULL) == N->getZExtValue());
+}], LH16>;
+
+def i64hl16 : PatLeaf<(i64 imm), [{  
+  // i64hl16 predicate - true if the 64-bit immediate has only bits 32-47 set.
+  return ((N->getZExtValue() & 0x0000FFFF00000000ULL) == N->getZExtValue());
+}], HL16>;
+
+def i64hh16 : PatLeaf<(i64 imm), [{  
+  // i64hh16 predicate - true if the 64-bit immediate has only bits 48-63 set.
+  return ((N->getZExtValue() & 0xFFFF000000000000ULL) == N->getZExtValue());
+}], HH16>;
+
+def i64ll16c : PatLeaf<(i64 imm), [{  
+  // i64ll16c predicate - true if the 64-bit immediate has only rightmost 16
+  // bits set.
+  return ((N->getZExtValue() | 0xFFFFFFFFFFFF0000ULL) == N->getZExtValue());
+}], LL16>;
+
+def i64lh16c : PatLeaf<(i64 imm), [{  
+  // i64lh16c predicate - true if the 64-bit immediate has only bits 16-31 set.
+  return ((N->getZExtValue() | 0xFFFFFFFF0000FFFFULL) == N->getZExtValue());
+}], LH16>;
+
+def i64hl16c : PatLeaf<(i64 imm), [{  
+  // i64hl16c predicate - true if the 64-bit immediate has only bits 32-47 set.
+  return ((N->getZExtValue() | 0xFFFF0000FFFFFFFFULL) == N->getZExtValue());
+}], HL16>;
+
+def i64hh16c : PatLeaf<(i64 imm), [{  
+  // i64hh16c predicate - true if the 64-bit immediate has only bits 48-63 set.
+  return ((N->getZExtValue() | 0x0000FFFFFFFFFFFFULL) == N->getZExtValue());
+}], HH16>;
+
+def immSExt16 : PatLeaf<(imm), [{
+  // immSExt16 predicate - true if the immediate fits in a 16-bit sign extended
+  // field.
+  if (N->getValueType(0) == MVT::i64) {
+    uint64_t val = N->getZExtValue();
+    return ((int64_t)val == (int16_t)val);
+  } else if (N->getValueType(0) == MVT::i32) {
+    uint32_t val = N->getZExtValue();
+    return ((int32_t)val == (int16_t)val);
+  }
+
+  return false;
+}], LL16>;
+
+def immSExt32 : PatLeaf<(i64 imm), [{
+  // immSExt32 predicate - true if the immediate fits in a 32-bit sign extended
+  // field.
+  uint64_t val = N->getZExtValue();
+  return ((int64_t)val == (int32_t)val);
+}], LO32>;
+
+def i64lo32 : PatLeaf<(i64 imm), [{
+  // i64lo32 predicate - true if the 64-bit immediate has only rightmost 32
+  // bits set.
+  return ((N->getZExtValue() & 0x00000000FFFFFFFFULL) == N->getZExtValue());
+}], LO32>;
+
+def i64hi32 : PatLeaf<(i64 imm), [{
+  // i64hi32 predicate - true if the 64-bit immediate has only bits 32-63 set.
+  return ((N->getZExtValue() & 0xFFFFFFFF00000000ULL) == N->getZExtValue());
+}], HI32>;
+
+def i64lo32c : PatLeaf<(i64 imm), [{
+  // i64lo32 predicate - true if the 64-bit immediate has only rightmost 32
+  // bits set.
+  return ((N->getZExtValue() | 0xFFFFFFFF00000000ULL) == N->getZExtValue());
+}], LO32>;
+
+def i64hi32c : PatLeaf<(i64 imm), [{
+  // i64hi32 predicate - true if the 64-bit immediate has only bits 32-63 set.
+  return ((N->getZExtValue() | 0x00000000FFFFFFFFULL) == N->getZExtValue());
+}], HI32>;
+
+def i32immSExt8  : PatLeaf<(i32 imm), [{
+  // i32immSExt8 predicate - True if the 32-bit immediate fits in a 8-bit
+  // sign extended field.
+  return (int32_t)N->getZExtValue() == (int8_t)N->getZExtValue();
+}], LO8>;
+
+def i32immSExt16 : PatLeaf<(i32 imm), [{
+  // i32immSExt16 predicate - True if the 32-bit immediate fits in a 16-bit
+  // sign extended field.
+  return (int32_t)N->getZExtValue() == (int16_t)N->getZExtValue();
+}], LL16>;
+
+def i64immSExt32 : PatLeaf<(i64 imm), [{
+  // i64immSExt32 predicate - True if the 64-bit immediate fits in a 32-bit
+  // sign extended field.
+  return (int64_t)N->getZExtValue() == (int32_t)N->getZExtValue();
+}], LO32>;
+
+def i64immZExt32 : PatLeaf<(i64 imm), [{
+  // i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
+  // zero extended field.
+  return (uint64_t)N->getZExtValue() == (uint32_t)N->getZExtValue();
+}], LO32>;
+
+// extloads
+def extloadi32i8   : PatFrag<(ops node:$ptr), (i32 (extloadi8  node:$ptr))>;
+def extloadi32i16  : PatFrag<(ops node:$ptr), (i32 (extloadi16 node:$ptr))>;
+def extloadi64i8   : PatFrag<(ops node:$ptr), (i64 (extloadi8  node:$ptr))>;
+def extloadi64i16  : PatFrag<(ops node:$ptr), (i64 (extloadi16 node:$ptr))>;
+def extloadi64i32  : PatFrag<(ops node:$ptr), (i64 (extloadi32 node:$ptr))>;
+
+def sextloadi32i8   : PatFrag<(ops node:$ptr), (i32 (sextloadi8  node:$ptr))>;
+def sextloadi32i16  : PatFrag<(ops node:$ptr), (i32 (sextloadi16 node:$ptr))>;
+def sextloadi64i8   : PatFrag<(ops node:$ptr), (i64 (sextloadi8  node:$ptr))>;
+def sextloadi64i16  : PatFrag<(ops node:$ptr), (i64 (sextloadi16 node:$ptr))>;
+def sextloadi64i32  : PatFrag<(ops node:$ptr), (i64 (sextloadi32 node:$ptr))>;
+
+def zextloadi32i8   : PatFrag<(ops node:$ptr), (i32 (zextloadi8  node:$ptr))>;
+def zextloadi32i16  : PatFrag<(ops node:$ptr), (i32 (zextloadi16 node:$ptr))>;
+def zextloadi64i8   : PatFrag<(ops node:$ptr), (i64 (zextloadi8  node:$ptr))>;
+def zextloadi64i16  : PatFrag<(ops node:$ptr), (i64 (zextloadi16 node:$ptr))>;
+def zextloadi64i32  : PatFrag<(ops node:$ptr), (i64 (zextloadi32 node:$ptr))>;
+
+// A couple of more descriptive operand definitions.
+// 32-bits but only 8 bits are significant.
+def i32i8imm  : Operand<i32>;
+// 32-bits but only 16 bits are significant.
+def i32i16imm : Operand<i32>;
+// 64-bits but only 32 bits are significant.
+def i64i32imm : Operand<i64>;
+// Branch targets have OtherVT type.
+def brtarget : Operand<OtherVT>;
+
+// Unsigned i12
+def u12imm : Operand<i32> {
+  let PrintMethod = "printU12ImmOperand";
+}
+def u12imm64 : Operand<i64> {
+  let PrintMethod = "printU12ImmOperand";
+}
+
+// Signed i16
+def s16imm : Operand<i32> {
+  let PrintMethod = "printS16ImmOperand";
+}
+def s16imm64 : Operand<i64> {
+  let PrintMethod = "printS16ImmOperand";
+}
+// Signed i20
+def s20imm : Operand<i32> {
+  let PrintMethod = "printS20ImmOperand";
+}
+def s20imm64 : Operand<i64> {
+  let PrintMethod = "printS20ImmOperand";
+}
+// Signed i32
+def s32imm : Operand<i32> {
+  let PrintMethod = "printS32ImmOperand";
+}
+def s32imm64 : Operand<i64> {
+  let PrintMethod = "printS32ImmOperand";
+}
+
+def imm_pcrel : Operand<i64> {
+  let PrintMethod = "printPCRelImmOperand";
+}
+
+//===----------------------------------------------------------------------===//
+// SystemZ Operand Definitions.
+//===----------------------------------------------------------------------===//
+
+// Address operands
+
+// riaddr := reg + imm
+def riaddr32 : Operand<i64>,
+               ComplexPattern<i64, 2, "SelectAddrRI12Only", []> {
+  let PrintMethod = "printRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, u12imm:$disp);
+}
+
+def riaddr12 : Operand<i64>,
+               ComplexPattern<i64, 2, "SelectAddrRI12", []> {
+  let PrintMethod = "printRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, u12imm64:$disp);
+}
+
+def riaddr : Operand<i64>,
+             ComplexPattern<i64, 2, "SelectAddrRI", []> {
+  let PrintMethod = "printRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, s20imm64:$disp);
+}
+
+//===----------------------------------------------------------------------===//
+
+// rriaddr := reg + reg + imm
+def rriaddr12 : Operand<i64>,
+                ComplexPattern<i64, 3, "SelectAddrRRI12", [], []> {
+  let PrintMethod = "printRRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, u12imm64:$disp, ADDR64:$index);
+}
+def rriaddr : Operand<i64>,
+              ComplexPattern<i64, 3, "SelectAddrRRI20", [], []> {
+  let PrintMethod = "printRRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, s20imm64:$disp, ADDR64:$index);
+}
+def laaddr : Operand<i64>,
+             ComplexPattern<i64, 3, "SelectLAAddr", [add, sub, or, frameindex], []> {
+  let PrintMethod = "printRRIAddrOperand";
+  let MIOperandInfo = (ops ADDR64:$base, s20imm64:$disp, ADDR64:$index);
+}