Mips16InstrInfo.td revision 54c5bc87992ebeaa9e71f2bfb60ac5cf74b77db3 
1//===- Mips16InstrInfo.td - Target Description for Mips16  -*- tablegen -*-=//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file describes Mips16 instructions.
11//
12//===----------------------------------------------------------------------===//
13
14class Mips16Pat<dag pattern, dag result> : Pat<pattern, result> {
15  let Predicates = [InMips16Mode];
16}
17
18def LI16E      : FEXT_RI16<0b01101, (outs CPU16Regs:$rx),
19                           (ins uimm16:$amt),
20                           !strconcat("li", "\t$rx, $amt"),
21                           [(set CPU16Regs:$rx, immZExt16:$amt )],IILoad>;
22
23let isReturn=1, isTerminator=1, hasDelaySlot=1, isCodeGenOnly=1,
24    isBarrier=1, hasCtrlDep=1, rx=0, nd=0, l=0, ra=0  in
25def RET16 : FRR16_JALRC 
26            < (outs), (ins CPURAReg:$target),
27              "jr\t$target", [(MipsRet CPURAReg:$target)], IIBranch>;
28
29// As stack alignment is always done with addiu, we need a 16-bit immediate
30let Defs = [SP], Uses = [SP] in {
31def ADJCALLSTACKDOWN16 : MipsPseudo16<(outs), (ins uimm16:$amt),
32                                      "!ADJCALLSTACKDOWN $amt",
33                                      [(callseq_start timm:$amt)]>;
34def ADJCALLSTACKUP16   : MipsPseudo16<(outs), (ins uimm16:$amt1, uimm16:$amt2),
35                                      "!ADJCALLSTACKUP $amt1",
36                                      [(callseq_end timm:$amt1, timm:$amt2)]>;
37}
38
39
40// Jump and Link (Call)
41let isCall=1, hasDelaySlot=1, nd=0, l=0, ra=0 in
42def JumpLinkReg16:
43    FRR16_JALRC<(outs), (ins CPU16Regs:$rs, variable_ops),
44                "jalr \t$rs", [(MipsJmpLink CPU16Regs:$rs)], IIBranch>;
45
46// Small immediates
47def : Mips16Pat<(i32 immZExt16:$in), (LI16E immZExt16:$in)>;
48