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ARM mode LDREX*/STREX* binary encodings.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117695 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-10-29 19:58:57 +00:00
parent 5c4966e1e5
commit 86875a2463
2 changed files with 28 additions and 18 deletions
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10
lib/Target/ARM/ARMInstrFormats.td
View File

@ -348,19 +348,29 @@ class AIldrex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, LdStExFrm, itin,
opc, asm, "", pattern> {
bits<4> Rt;
bits<4> Rn;
let Inst{27-23} = 0b00011;
let Inst{22-21} = opcod;
let Inst{20} = 1;
let Inst{19-16} = Rn;
let Inst{15-12} = Rt;
let Inst{11-0} = 0b111110011111;
}
class AIstrex<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, LdStExFrm, itin,
opc, asm, "", pattern> {
bits<4> Rd;
bits<4> Rt;
bits<4> Rn;
let Inst{27-23} = 0b00011;
let Inst{22-21} = opcod;
let Inst{20} = 0;
let Inst{19-16} = Rn;
let Inst{15-12} = Rd;
let Inst{11-4} = 0b11111001;
let Inst{3-0} = Rt;
}
// addrmode1 instructions

36
lib/Target/ARM/ARMInstrInfo.td
View File

@ -3028,38 +3028,38 @@ let usesCustomInserter = 1 in {
}
let mayLoad = 1 in {
def LDREXB : AIldrex<0b10, (outs GPR:$dest), (ins GPR:$ptr), NoItinerary,
"ldrexb", "\t$dest, [$ptr]",
def LDREXB : AIldrex<0b10, (outs GPR:$Rt), (ins GPR:$Rn), NoItinerary,
"ldrexb", "\t$Rt, [$Rn]",
[]>;
def LDREXH : AIldrex<0b11, (outs GPR:$dest), (ins GPR:$ptr), NoItinerary,
"ldrexh", "\t$dest, [$ptr]",
def LDREXH : AIldrex<0b11, (outs GPR:$Rt), (ins GPR:$Rn), NoItinerary,
"ldrexh", "\t$Rt, [$Rn]",
[]>;
def LDREX : AIldrex<0b00, (outs GPR:$dest), (ins GPR:$ptr), NoItinerary,
"ldrex", "\t$dest, [$ptr]",
def LDREX : AIldrex<0b00, (outs GPR:$Rt), (ins GPR:$Rn), NoItinerary,
"ldrex", "\t$Rt, [$Rn]",
[]>;
def LDREXD : AIldrex<0b01, (outs GPR:$dest, GPR:$dest2), (ins GPR:$ptr),
def LDREXD : AIldrex<0b01, (outs GPR:$Rt, GPR:$Rt2), (ins GPR:$Rn),
NoItinerary,
"ldrexd", "\t$dest, $dest2, [$ptr]",
"ldrexd", "\t$Rt, $Rt2, [$Rn]",
[]>;
}
let mayStore = 1, Constraints = "@earlyclobber $success" in {
def STREXB : AIstrex<0b10, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
let mayStore = 1, Constraints = "@earlyclobber $Rd" in {
def STREXB : AIstrex<0b10, (outs GPR:$Rd), (ins GPR:$src, GPR:$Rn),
NoItinerary,
"strexb", "\t$success, $src, [$ptr]",
"strexb", "\t$Rd, $src, [$Rn]",
[]>;
def STREXH : AIstrex<0b11, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
def STREXH : AIstrex<0b11, (outs GPR:$Rd), (ins GPR:$Rt, GPR:$Rn),
NoItinerary,
"strexh", "\t$success, $src, [$ptr]",
"strexh", "\t$Rd, $Rt, [$Rn]",
[]>;
def STREX : AIstrex<0b00, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
def STREX : AIstrex<0b00, (outs GPR:$Rd), (ins GPR:$Rt, GPR:$Rn),
NoItinerary,
"strex", "\t$success, $src, [$ptr]",
"strex", "\t$Rd, $Rt, [$Rn]",
[]>;
def STREXD : AIstrex<0b01, (outs GPR:$success),
(ins GPR:$src, GPR:$src2, GPR:$ptr),
def STREXD : AIstrex<0b01, (outs GPR:$Rd),
(ins GPR:$Rt, GPR:$Rt2, GPR:$Rn),
NoItinerary,
"strexd", "\t$success, $src, $src2, [$ptr]",
"strexd", "\t$Rd, $Rt, $Rt2, [$Rn]",
[]>;
}