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Clean up patterns for Thumb1 system instructions. 

llvm-svn: 137897
This commit is contained in:
Jim Grosbach 2011-08-17 23:08:57 +00:00
parent 6fdf38bfbd
commit 23b729eeba
1 changed files with 18 additions and 24 deletions
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42
llvm/lib/Target/ARM/ARMInstrThumb.td
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@ -216,39 +216,33 @@ def tADJCALLSTACKDOWN :
Requires<[IsThumb, IsThumb1Only]>;
}
// T1Disassembly - A simple class to make encoding some disassembly patterns
// easier and less verbose.
class T1Disassembly<bits<2> op1, bits<8> op2>
class T1SystemEncoding<bits<8> opc>
: T1Encoding<0b101111> {
let Inst{9-8} = op1;
let Inst{7-0} = op2;
let Inst{9-8} = 0b11;
let Inst{7-0} = opc;
}
def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b11, 0x00>; // A8.6.110
def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "", []>,
T1SystemEncoding<0x00>; // A8.6.110
def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b11, 0x10>; // A8.6.410
def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "", []>,
T1SystemEncoding<0x10>; // A8.6.410
def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b11, 0x20>; // A8.6.408
def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "", []>,
T1SystemEncoding<0x20>; // A8.6.408
def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b11, 0x30>; // A8.6.409
def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "", []>,
T1SystemEncoding<0x30>; // A8.6.409
def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b11, 0x40>; // A8.6.157
def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "", []>,
T1SystemEncoding<0x40>; // A8.6.157
// The i32imm operand $val can be used by a debugger to store more information
// The imm operand $val can be used by a debugger to store more information
// about the breakpoint.
def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
[/* For disassembly only; pattern left blank */]>,
T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
[]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b10;
// A8.6.22
bits<8> val;
let Inst{7-0} = val;