[llvm-commits] [llvm] r58818 - in /llvm/trunk/lib/Target/ARM: ARMCodeEmitter.cpp ARMInstrFormats.td ARMInstrInfo.h ARMInstrInfo.td
Evan Cheng
evan.cheng at apple.com
Thu Nov 6 14:15:19 PST 2008
Author: evancheng
Date: Thu Nov 6 16:15:19 2008
New Revision: 58818
URL: http://llvm.org/viewvc/llvm-project?rev=58818&view=rev
Log:
Encode extend instructions; more clean up.
Modified:
llvm/trunk/lib/Target/ARM/ARMCodeEmitter.cpp
llvm/trunk/lib/Target/ARM/ARMInstrFormats.td
llvm/trunk/lib/Target/ARM/ARMInstrInfo.h
llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
Modified: llvm/trunk/lib/Target/ARM/ARMCodeEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMCodeEmitter.cpp?rev=58818&r1=58817&r2=58818&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMCodeEmitter.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMCodeEmitter.cpp Thu Nov 6 16:15:19 2008
@@ -98,6 +98,8 @@
void emitMulFrmInstruction(const MachineInstr &MI);
+ void emitExtendInstruction(const MachineInstr &MI);
+
void emitBranchInstruction(const MachineInstr &MI);
void emitMiscBranchInstruction(const MachineInstr &MI);
@@ -282,6 +284,9 @@
case ARMII::MulFrm:
emitMulFrmInstruction(MI);
break;
+ case ARMII::ExtFrm:
+ emitExtendInstruction(MI);
+ break;
case ARMII::BrFrm:
emitBranchInstruction(MI);
break;
@@ -349,7 +354,7 @@
unsigned Binary = 0xd << 21; // mov: Insts{24-21} = 0b1101
// Set the conditional execution predicate.
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Encode Rd.
Binary |= getMachineOpValue(MI, MO0) << ARMII::RegRdShift;
@@ -364,7 +369,7 @@
Binary = 0xc << 21; // orr: Insts{24-21} = 0b1100
// Set the conditional execution predicate.
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Encode Rd.
Binary |= getMachineOpValue(MI, MO0) << ARMII::RegRdShift;
@@ -488,7 +493,9 @@
unsigned ARMCodeEmitter::getMachineSoImmOpValue(unsigned SoImm) {
// Encode rotate_imm.
- unsigned Binary = (ARM_AM::getSOImmValRot(SoImm) >> 1) << ARMII::RotImmShift;
+ unsigned Binary = (ARM_AM::getSOImmValRot(SoImm) >> 1)
+ << ARMII::SoRotImmShift;
+
// Encode immed_8.
Binary |= ARM_AM::getSOImmValImm(SoImm);
return Binary;
@@ -512,7 +519,7 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Encode S bit if MI modifies CPSR.
Binary |= getAddrModeSBit(MI, TID);
@@ -570,7 +577,7 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Set first operand
Binary |= getMachineOpValue(MI, 0) << ARMII::RegRdShift;
@@ -623,7 +630,7 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Set first operand
Binary |= getMachineOpValue(MI, 0) << ARMII::RegRdShift;
@@ -656,7 +663,7 @@
}
// This instr is in immediate offset/index encoding, set bit 22 to 1.
- Binary |= 1 << 22;
+ Binary |= 1 << ARMII::AM3_I_BitShift;
if (unsigned ImmOffs = ARM_AM::getAM3Offset(AM3Opc)) {
// Set operands
Binary |= (ImmOffs >> 4) << 8; // immedH
@@ -671,7 +678,7 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Set first operand
Binary |= getMachineOpValue(MI, 0) << ARMII::RegRnShift;
@@ -686,14 +693,14 @@
switch (Mode) {
default: assert(0 && "Unknown addressing sub-mode!");
case ARM_AM::da: break;
- case ARM_AM::db: Binary |= 0x1 << 24; break;
- case ARM_AM::ia: Binary |= 0x1 << 23; break;
- case ARM_AM::ib: Binary |= 0x3 << 23; break;
+ case ARM_AM::db: Binary |= 0x1 << ARMII::P_BitShift; break;
+ case ARM_AM::ia: Binary |= 0x1 << ARMII::U_BitShift; break;
+ case ARM_AM::ib: Binary |= 0x3 << ARMII::U_BitShift; break;
}
// Set bit W(21)
if (ARM_AM::getAM4WBFlag(MO.getImm()))
- Binary |= 0x1 << 21;
+ Binary |= 0x1 << ARMII::W_BitShift;
// Set registers
for (unsigned i = 4, e = MI.getNumOperands(); i != e; ++i) {
@@ -716,14 +723,14 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Encode S bit if MI modifies CPSR.
Binary |= getAddrModeSBit(MI, TID);
// 32x32->64bit operations have two destination registers. The number
// of register definitions will tell us if that's what we're dealing with.
- int OpIdx = 0;
+ unsigned OpIdx = 0;
if (TID.getNumDefs() == 2)
Binary |= getMachineOpValue (MI, OpIdx++) << ARMII::RegRdLoShift;
@@ -738,8 +745,47 @@
// Many multiple instructions (e.g. MLA) have three src operands. Encode
// it as Rn (for multiply, that's in the same offset as RdLo.
- if (TID.getNumOperands() - TID.getNumDefs() == 3)
- Binary |= getMachineOpValue(MI, OpIdx++) << ARMII::RegRdLoShift;
+ if (TID.getNumOperands() > OpIdx &&
+ !TID.OpInfo[OpIdx].isPredicate() &&
+ !TID.OpInfo[OpIdx].isOptionalDef())
+ Binary |= getMachineOpValue(MI, OpIdx) << ARMII::RegRdLoShift;
+
+ emitWordLE(Binary);
+}
+
+void ARMCodeEmitter::emitExtendInstruction(const MachineInstr &MI) {
+ const TargetInstrDesc &TID = MI.getDesc();
+
+ // Part of binary is determined by TableGn.
+ unsigned Binary = getBinaryCodeForInstr(MI);
+
+ // Set the conditional execution predicate
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
+
+ unsigned OpIdx = 0;
+
+ // Encode Rd
+ Binary |= getMachineOpValue(MI, OpIdx++) << ARMII::RegRdShift;
+
+ const MachineOperand &MO1 = MI.getOperand(OpIdx++);
+ const MachineOperand &MO2 = MI.getOperand(OpIdx);
+ if (MO2.isReg()) {
+ // Two register operand form.
+ // Encode Rn.
+ Binary |= getMachineOpValue(MI, MO1) << ARMII::RegRnShift;
+
+ // Encode Rm.
+ Binary |= getMachineOpValue(MI, MO2);
+ ++OpIdx;
+ } else {
+ Binary |= getMachineOpValue(MI, MO1);
+ }
+
+ // Encode rot imm (0, 8, 16, or 24) if it has a rotate immediate operand.
+ if (MI.getOperand(OpIdx).isImm() &&
+ !TID.OpInfo[OpIdx].isPredicate() &&
+ !TID.OpInfo[OpIdx].isOptionalDef())
+ Binary |= (getMachineOpValue(MI, OpIdx) / 8) << ARMII::ExtRotImmShift;
emitWordLE(Binary);
}
@@ -754,17 +800,11 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
// Set signed_immed_24 field
Binary |= getMachineOpValue(MI, 0);
- // if it is a conditional branch, set cond field
- if (TID.Opcode == ARM::Bcc) {
- Binary &= 0x0FFFFFFF; // clear conditional field
- Binary |= getMachineOpValue(MI, 1) << 28; // set conditional field
- }
-
emitWordLE(Binary);
}
@@ -780,7 +820,7 @@
unsigned Binary = getBinaryCodeForInstr(MI);
// Set the conditional execution predicate
- Binary |= II->getPredicate(&MI) << 28;
+ Binary |= II->getPredicate(&MI) << ARMII::CondShift;
if (TID.Opcode == ARM::BX_RET)
// The return register is LR.
Modified: llvm/trunk/lib/Target/ARM/ARMInstrFormats.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrFormats.td?rev=58818&r1=58817&r2=58818&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrFormats.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrFormats.td Thu Nov 6 16:15:19 2008
@@ -34,9 +34,10 @@
def LdMulFrm : Format<11>;
def StMulFrm : Format<12>;
-def ArithMisc : Format<13>;
-def ThumbFrm : Format<14>;
-def VFPFrm : Format<15>;
+def ArithMiscFrm: Format<13>;
+def ExtFrm : Format<14>;
+def ThumbFrm : Format<15>;
+def VFPFrm : Format<16>;
// Misc flag for data processing instructions that indicates whether
// the instruction has a Rn register operand.
@@ -123,11 +124,11 @@
class AI<dag oops, dag iops, Format f, string opc,
string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, f, opc,
- asm,"",pattern>;
+ asm, "", pattern>;
class AsI<dag oops, dag iops, Format f, string opc,
string asm, list<dag> pattern>
: sI<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, f, opc,
- asm,"",pattern>;
+ asm, "", pattern>;
class AXI<dag oops, dag iops, Format f, string asm,
list<dag> pattern>
: XI<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, f, asm,
@@ -137,7 +138,7 @@
class ABI<bits<4> opcod, dag oops, dag iops, string opc,
string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, BrFrm, opc,
- asm,"",pattern> {
+ asm, "", pattern> {
let Inst{27-24} = opcod;
}
class ABXI<bits<4> opcod, dag oops, dag iops, string asm, list<dag> pattern>
@@ -645,7 +646,7 @@
class AMul1I<bits<7> opcod, dag oops, dag iops, string opc,
string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, MulFrm, opc,
- asm,"",pattern> {
+ asm, "", pattern> {
let Inst{7-4} = 0b1001;
let Inst{20} = 0; // S bit
let Inst{27-21} = opcod;
@@ -653,7 +654,7 @@
class AsMul1I<bits<7> opcod, dag oops, dag iops, string opc,
string asm, list<dag> pattern>
: sI<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, MulFrm, opc,
- asm,"",pattern> {
+ asm, "", pattern> {
let Inst{7-4} = 0b1001;
let Inst{27-21} = opcod;
}
@@ -662,7 +663,7 @@
class AMul2I<bits<7> opcod, dag oops, dag iops, string opc,
string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, MulFrm, opc,
- asm,"",pattern> {
+ asm, "", pattern> {
let Inst{7-4} = 0b1001;
let Inst{20} = 1;
let Inst{27-21} = opcod;
@@ -672,13 +673,22 @@
class AMulxyI<bits<7> opcod, dag oops, dag iops, string opc,
string asm, list<dag> pattern>
: I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, MulFrm, opc,
- asm,"",pattern> {
+ asm, "", pattern> {
let Inst{4} = 0;
let Inst{7} = 1;
let Inst{20} = 0;
let Inst{27-21} = opcod;
}
+// Extend instructions.
+class AExtI<bits<8> opcod, dag oops, dag iops, string opc,
+ string asm, list<dag> pattern>
+ : I<oops, iops, AddrModeNone, Size4Bytes, IndexModeNone, ExtFrm, opc,
+ asm, "", pattern> {
+ let Inst{7-4} = 0b0111;
+ let Inst{27-20} = opcod;
+}
+
//===----------------------------------------------------------------------===//
// ARMPat - Same as Pat<>, but requires that the compiler be in ARM mode.
Modified: llvm/trunk/lib/Target/ARM/ARMInstrInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrInfo.h?rev=58818&r1=58817&r2=58818&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrInfo.h (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrInfo.h Thu Nov 6 16:15:19 2008
@@ -95,28 +95,34 @@
StMulFrm = 12 << FormShift,
// Miscellaneous arithmetic instructions
- ArithMisc = 13 << FormShift,
+ ArithMiscFrm= 13 << FormShift,
+
+ // Extend instructions
+ ExtFrm = 14 << FormShift,
// Thumb format
- ThumbFrm = 14 << FormShift,
+ ThumbFrm = 15 << FormShift,
// VFP format
- VPFFrm = 15 << FormShift,
+ VPFFrm = 16 << FormShift,
//===------------------------------------------------------------------===//
// Field shifts - such shifts are used to set field while generating
// machine instructions.
- RotImmShift = 8,
- RegRsShift = 8,
- RegRdLoShift = 12,
- RegRdShift = 12,
- RegRdHiShift = 16,
- RegRnShift = 16,
- L_BitShift = 20,
- S_BitShift = 20,
- U_BitShift = 23,
- IndexShift = 24,
- I_BitShift = 25
+ SoRotImmShift = 8,
+ RegRsShift = 8,
+ ExtRotImmShift = 10,
+ RegRdLoShift = 12,
+ RegRdShift = 12,
+ RegRdHiShift = 16,
+ RegRnShift = 16,
+ S_BitShift = 20,
+ W_BitShift = 21,
+ AM3_I_BitShift = 22,
+ U_BitShift = 23,
+ P_BitShift = 24,
+ I_BitShift = 25,
+ CondShift = 28
};
}
Modified: llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrInfo.td?rev=58818&r1=58817&r2=58818&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrInfo.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrInfo.td Thu Nov 6 16:15:19 2008
@@ -390,25 +390,31 @@
/// AI_unary_rrot - A unary operation with two forms: one whose operand is a
/// register and one whose operand is a register rotated by 8/16/24.
-multiclass AI_unary_rrot<string opc, PatFrag opnode> {
- def r : AI<(outs GPR:$dst), (ins GPR:$Src), Pseudo,
+/// FIXME: Remove the 'r' variant. Its rot_imm is zero.
+multiclass AI_unary_rrot<bits<8> opcod, string opc, PatFrag opnode> {
+ def r : AExtI<opcod, (outs GPR:$dst), (ins GPR:$Src),
opc, " $dst, $Src",
- [(set GPR:$dst, (opnode GPR:$Src))]>, Requires<[IsARM, HasV6]>;
- def r_rot : AI<(outs GPR:$dst), (ins GPR:$Src, i32imm:$rot), Pseudo,
+ [(set GPR:$dst, (opnode GPR:$Src))]>,
+ Requires<[IsARM, HasV6]> {
+ let Inst{19-16} = 0b1111;
+ }
+ def r_rot : AExtI<opcod, (outs GPR:$dst), (ins GPR:$Src, i32imm:$rot),
opc, " $dst, $Src, ror $rot",
[(set GPR:$dst, (opnode (rotr GPR:$Src, rot_imm:$rot)))]>,
- Requires<[IsARM, HasV6]>;
+ Requires<[IsARM, HasV6]> {
+ let Inst{19-16} = 0b1111;
+ }
}
/// AI_bin_rrot - A binary operation with two forms: one whose operand is a
/// register and one whose operand is a register rotated by 8/16/24.
-multiclass AI_bin_rrot<string opc, PatFrag opnode> {
- def rr : AI<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS),
- Pseudo, opc, " $dst, $LHS, $RHS",
+multiclass AI_bin_rrot<bits<8> opcod, string opc, PatFrag opnode> {
+ def rr : AExtI<opcod, (outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS),
+ opc, " $dst, $LHS, $RHS",
[(set GPR:$dst, (opnode GPR:$LHS, GPR:$RHS))]>,
Requires<[IsARM, HasV6]>;
- def rr_rot : AI<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS, i32imm:$rot),
- Pseudo, opc, " $dst, $LHS, $RHS, ror $rot",
+ def rr_rot : AExtI<opcod, (outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS, i32imm:$rot),
+ opc, " $dst, $LHS, $RHS, ror $rot",
[(set GPR:$dst, (opnode GPR:$LHS,
(rotr GPR:$RHS, rot_imm:$rot)))]>,
Requires<[IsARM, HasV6]>;
@@ -781,31 +787,36 @@
// Sign extenders
-defm SXTB : AI_unary_rrot<"sxtb", UnOpFrag<(sext_inreg node:$Src, i8)>>;
-defm SXTH : AI_unary_rrot<"sxth", UnOpFrag<(sext_inreg node:$Src, i16)>>;
-
-defm SXTAB : AI_bin_rrot<"sxtab",
- BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS, i8))>>;
-defm SXTAH : AI_bin_rrot<"sxtah",
- BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
+defm SXTB : AI_unary_rrot<0b01101010,
+ "sxtb", UnOpFrag<(sext_inreg node:$Src, i8)>>;
+defm SXTH : AI_unary_rrot<0b01101011,
+ "sxth", UnOpFrag<(sext_inreg node:$Src, i16)>>;
+
+defm SXTAB : AI_bin_rrot<0b01101010,
+ "sxtab", BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS, i8))>>;
+defm SXTAH : AI_bin_rrot<0b01101011,
+ "sxtah", BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
// TODO: SXT(A){B|H}16
// Zero extenders
let AddedComplexity = 16 in {
-defm UXTB : AI_unary_rrot<"uxtb" , UnOpFrag<(and node:$Src, 0x000000FF)>>;
-defm UXTH : AI_unary_rrot<"uxth" , UnOpFrag<(and node:$Src, 0x0000FFFF)>>;
-defm UXTB16 : AI_unary_rrot<"uxtb16", UnOpFrag<(and node:$Src, 0x00FF00FF)>>;
+defm UXTB : AI_unary_rrot<0b01101110,
+ "uxtb" , UnOpFrag<(and node:$Src, 0x000000FF)>>;
+defm UXTH : AI_unary_rrot<0b01101111,
+ "uxth" , UnOpFrag<(and node:$Src, 0x0000FFFF)>>;
+defm UXTB16 : AI_unary_rrot<0b01101100,
+ "uxtb16", UnOpFrag<(and node:$Src, 0x00FF00FF)>>;
def : ARMV6Pat<(and (shl GPR:$Src, 8), 0xFF00FF),
(UXTB16r_rot GPR:$Src, 24)>;
def : ARMV6Pat<(and (srl GPR:$Src, 8), 0xFF00FF),
(UXTB16r_rot GPR:$Src, 8)>;
-defm UXTAB : AI_bin_rrot<"uxtab",
+defm UXTAB : AI_bin_rrot<0b01101110, "uxtab",
BinOpFrag<(add node:$LHS, (and node:$RHS, 0x00FF))>>;
-defm UXTAH : AI_bin_rrot<"uxtah",
+defm UXTAH : AI_bin_rrot<0b01101111, "uxtah",
BinOpFrag<(add node:$LHS, (and node:$RHS, 0xFFFF))>>;
}
@@ -1090,15 +1101,15 @@
// Misc. Arithmetic Instructions.
//
-def CLZ : AI<(outs GPR:$dst), (ins GPR:$src), ArithMisc,
+def CLZ : AI<(outs GPR:$dst), (ins GPR:$src), ArithMiscFrm,
"clz", " $dst, $src",
[(set GPR:$dst, (ctlz GPR:$src))]>, Requires<[IsARM, HasV5T]>;
-def REV : AI<(outs GPR:$dst), (ins GPR:$src), ArithMisc,
+def REV : AI<(outs GPR:$dst), (ins GPR:$src), ArithMiscFrm,
"rev", " $dst, $src",
[(set GPR:$dst, (bswap GPR:$src))]>, Requires<[IsARM, HasV6]>;
-def REV16 : AI<(outs GPR:$dst), (ins GPR:$src), ArithMisc,
+def REV16 : AI<(outs GPR:$dst), (ins GPR:$src), ArithMiscFrm,
"rev16", " $dst, $src",
[(set GPR:$dst,
(or (and (srl GPR:$src, 8), 0xFF),
@@ -1107,7 +1118,7 @@
(and (shl GPR:$src, 8), 0xFF000000)))))]>,
Requires<[IsARM, HasV6]>;
-def REVSH : AI<(outs GPR:$dst), (ins GPR:$src), ArithMisc,
+def REVSH : AI<(outs GPR:$dst), (ins GPR:$src), ArithMiscFrm,
"revsh", " $dst, $src",
[(set GPR:$dst,
(sext_inreg
@@ -1116,7 +1127,7 @@
Requires<[IsARM, HasV6]>;
def PKHBT : AI<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt),
- Pseudo, "pkhbt", " $dst, $src1, $src2, LSL $shamt",
+ ArithMiscFrm, "pkhbt", " $dst, $src1, $src2, LSL $shamt",
[(set GPR:$dst, (or (and GPR:$src1, 0xFFFF),
(and (shl GPR:$src2, (i32 imm:$shamt)),
0xFFFF0000)))]>,
@@ -1130,7 +1141,7 @@
def PKHTB : AI<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt),
- Pseudo, "pkhtb", " $dst, $src1, $src2, ASR $shamt",
+ ArithMiscFrm, "pkhtb", " $dst, $src1, $src2, ASR $shamt",
[(set GPR:$dst, (or (and GPR:$src1, 0xFFFF0000),
(and (sra GPR:$src2, imm16_31:$shamt),
0xFFFF)))]>, Requires<[IsARM, HasV6]>;
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