1 //===-- SystemZPatterns.td - SystemZ-specific pattern rules ---*- tblgen-*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Record that INSN performs a 64-bit version of unary operator OPERATOR
11 // in which the operand is sign-extended from 32 to 64 bits.
12 multiclass SXU<SDPatternOperator operator, Instruction insn> {
13 def : Pat<(operator (sext (i32 GR32:$src))),
15 def : Pat<(operator (sext_inreg GR64:$src, i32)),
16 (insn (EXTRACT_SUBREG GR64:$src, subreg_l32))>;
19 // Record that INSN performs a 64-bit version of binary operator OPERATOR
20 // in which the first operand has class CLS and which the second operand
21 // is sign-extended from a 32-bit register.
22 multiclass SXB<SDPatternOperator operator, RegisterOperand cls,
24 def : Pat<(operator cls:$src1, (sext GR32:$src2)),
25 (insn cls:$src1, GR32:$src2)>;
26 def : Pat<(operator cls:$src1, (sext_inreg GR64:$src2, i32)),
27 (insn cls:$src1, (EXTRACT_SUBREG GR64:$src2, subreg_l32))>;
30 // Like SXB, but for zero extension.
31 multiclass ZXB<SDPatternOperator operator, RegisterOperand cls,
33 def : Pat<(operator cls:$src1, (zext GR32:$src2)),
34 (insn cls:$src1, GR32:$src2)>;
35 def : Pat<(operator cls:$src1, (and GR64:$src2, 0xffffffff)),
36 (insn cls:$src1, (EXTRACT_SUBREG GR64:$src2, subreg_l32))>;
39 // Record that INSN performs a binary read-modify-write operation,
40 // with LOAD, OPERATOR and STORE being the read, modify and write
41 // respectively. MODE is the addressing mode and IMM is the type
42 // of the second operand.
43 class RMWI<SDPatternOperator load, SDPatternOperator operator,
44 SDPatternOperator store, AddressingMode mode,
45 PatFrag imm, Instruction insn>
46 : Pat<(store (operator (load mode:$addr), imm:$src), mode:$addr),
47 (insn mode:$addr, (UIMM8 imm:$src))>;
49 // Record that INSN performs binary operation OPERATION on a byte
50 // memory location. IMM is the type of the second operand.
51 multiclass RMWIByte<SDPatternOperator operator, AddressingMode mode,
53 def : RMWI<anyextloadi8, operator, truncstorei8, mode, imm32, insn>;
54 def : RMWI<anyextloadi8, operator, truncstorei8, mode, imm64, insn>;
57 // Record that INSN performs insertion TYPE into a register of class CLS.
58 // The inserted operand is loaded using LOAD from an address of mode MODE.
59 multiclass InsertMem<string type, Instruction insn, RegisterOperand cls,
60 SDPatternOperator load, AddressingMode mode> {
61 def : Pat<(!cast<SDPatternOperator>("or_as_"##type)
62 cls:$src1, (load mode:$src2)),
63 (insn cls:$src1, mode:$src2)>;
64 def : Pat<(!cast<SDPatternOperator>("or_as_rev"##type)
65 (load mode:$src2), cls:$src1),
66 (insn cls:$src1, mode:$src2)>;
69 // INSN stores the low 32 bits of a GPR to a memory with addressing mode MODE.
70 // Record that it is equivalent to using OPERATOR to store a GR64.
71 class StoreGR64<Instruction insn, SDPatternOperator operator,
73 : Pat<(operator GR64:$R1, mode:$XBD2),
74 (insn (EXTRACT_SUBREG GR64:$R1, subreg_l32), mode:$XBD2)>;
76 // INSN and INSNY are an RX/RXY pair of instructions that store the low
77 // 32 bits of a GPR to memory. Record that they are equivalent to using
78 // OPERATOR to store a GR64.
79 multiclass StoreGR64Pair<Instruction insn, Instruction insny,
80 SDPatternOperator operator> {
81 def : StoreGR64<insn, operator, bdxaddr12pair>;
82 def : StoreGR64<insny, operator, bdxaddr20pair>;
85 // INSN stores the low 32 bits of a GPR using PC-relative addressing.
86 // Record that it is equivalent to using OPERATOR to store a GR64.
87 class StoreGR64PC<Instruction insn, SDPatternOperator operator>
88 : Pat<(operator GR64:$R1, pcrel32:$XBD2),
89 (insn (EXTRACT_SUBREG GR64:$R1, subreg_l32), pcrel32:$XBD2)> {
90 // We want PC-relative addresses to be tried ahead of BD and BDX addresses.
91 // However, BDXs have two extra operands and are therefore 6 units more
93 let AddedComplexity = 7;
96 // INSN and INSNINV conditionally store the low 32 bits of a GPR to memory,
97 // with INSN storing when the condition is true and INSNINV storing when the
98 // condition is false. Record that they are equivalent to a LOAD/select/STORE
99 // sequence for GR64s.
100 multiclass CondStores64<Instruction insn, Instruction insninv,
101 SDPatternOperator store, SDPatternOperator load,
102 AddressingMode mode> {
103 def : Pat<(store (z_select_ccmask GR64:$new, (load mode:$addr),
104 imm32zx4:$valid, imm32zx4:$cc),
106 (insn (EXTRACT_SUBREG GR64:$new, subreg_l32), mode:$addr,
107 imm32zx4:$valid, imm32zx4:$cc)>;
108 def : Pat<(store (z_select_ccmask (load mode:$addr), GR64:$new,
109 imm32zx4:$valid, imm32zx4:$cc),
111 (insninv (EXTRACT_SUBREG GR64:$new, subreg_l32), mode:$addr,
112 imm32zx4:$valid, imm32zx4:$cc)>;
115 // Try to use MVC instruction INSN for a load of type LOAD followed by a store
116 // of the same size. VT is the type of the intermediate (legalized) value and
117 // LENGTH is the number of bytes loaded by LOAD.
118 multiclass MVCLoadStore<SDPatternOperator load, ValueType vt, Instruction insn,
120 def : Pat<(mvc_store (vt (load bdaddr12only:$src)), bdaddr12only:$dest),
121 (insn bdaddr12only:$dest, bdaddr12only:$src, length)>;
124 // Use NC-like instruction INSN for block_op operation OPERATOR.
125 // The other operand is a load of type LOAD, which accesses LENGTH bytes.
126 // VT is the intermediate legalized type in which the binary operation
128 multiclass BinaryLoadStore<SDPatternOperator operator, SDPatternOperator load,
129 ValueType vt, Instruction insn, bits<5> length> {
130 def : Pat<(operator (vt (load bdaddr12only:$src)), bdaddr12only:$dest),
131 (insn bdaddr12only:$dest, bdaddr12only:$src, length)>;
134 // A convenient way of generating all block peepholes for a particular
135 // LOAD/VT/LENGTH combination.
136 multiclass BlockLoadStore<SDPatternOperator load, ValueType vt,
137 Instruction mvc, Instruction nc, Instruction oc,
138 Instruction xc, bits<5> length> {
139 defm : MVCLoadStore<load, vt, mvc, length>;
140 defm : BinaryLoadStore<block_and1, load, vt, nc, length>;
141 defm : BinaryLoadStore<block_and2, load, vt, nc, length>;
142 defm : BinaryLoadStore<block_or1, load, vt, oc, length>;
143 defm : BinaryLoadStore<block_or2, load, vt, oc, length>;
144 defm : BinaryLoadStore<block_xor1, load, vt, xc, length>;
145 defm : BinaryLoadStore<block_xor2, load, vt, xc, length>;
148 // Record that INSN is a LOAD AND TEST that can be used to compare
149 // registers in CLS against zero. The instruction has separate R1 and R2
150 // operands, but they must be the same when the instruction is used like this.
151 multiclass CompareZeroFP<Instruction insn, RegisterOperand cls> {
152 def : Pat<(z_fcmp cls:$reg, (fpimm0)), (insn cls:$reg, cls:$reg)>;
153 // The sign of the zero makes no difference.
154 def : Pat<(z_fcmp cls:$reg, (fpimmneg0)), (insn cls:$reg, cls:$reg)>;
157 // Use INSN for performing binary operation OPERATION of type VT
158 // on registers of class CLS.
159 class BinaryRRWithType<Instruction insn, RegisterOperand cls,
160 SDPatternOperator operator, ValueType vt>
161 : Pat<(vt (operator cls:$x, cls:$y)), (insn cls:$x, cls:$y)>;
163 // Use INSN to perform conversion operation OPERATOR, with the input being
164 // TR2 and the output being TR1. SUPPRESS is 4 to suppress inexact conditions
165 // and 0 to allow them. MODE is the rounding mode to use.
166 class FPConversion<Instruction insn, SDPatternOperator operator, TypedReg tr1,
167 TypedReg tr2, bits<3> suppress, bits<4> mode>
168 : Pat<(tr1.vt (operator (tr2.vt tr2.op:$vec))),
169 (insn tr2.op:$vec, suppress, mode)>;
171 // Use INSN to perform mininum/maximum operation OPERATOR on type TR.
172 // FUNCTION is the type of minimum/maximum function to perform.
173 class FPMinMax<Instruction insn, SDPatternOperator operator, TypedReg tr,
175 : Pat<(tr.vt (operator (tr.vt tr.op:$vec1), (tr.vt tr.op:$vec2))),
176 (insn tr.op:$vec1, tr.op:$vec2, function)>;