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-rw-r--r--compiler/optimizing/intrinsics_arm.cc176
1 files changed, 4 insertions, 172 deletions
diff --git a/compiler/optimizing/intrinsics_arm.cc b/compiler/optimizing/intrinsics_arm.cc
index 5329b5c1b7..b5cb611fe9 100644
--- a/compiler/optimizing/intrinsics_arm.cc
+++ b/compiler/optimizing/intrinsics_arm.cc
@@ -240,178 +240,6 @@ void IntrinsicCodeGeneratorARM::VisitLongNumberOfTrailingZeros(HInvoke* invoke)
GenNumberOfTrailingZeros(invoke->GetLocations(), Primitive::kPrimLong, GetAssembler());
}
-static void GenIntegerRotate(LocationSummary* locations,
- ArmAssembler* assembler,
- bool is_left) {
- Register in = locations->InAt(0).AsRegister<Register>();
- Location rhs = locations->InAt(1);
- Register out = locations->Out().AsRegister<Register>();
-
- if (rhs.IsConstant()) {
- // Arm32 and Thumb2 assemblers require a rotation on the interval [1,31],
- // so map all rotations to a +ve. equivalent in that range.
- // (e.g. left *or* right by -2 bits == 30 bits in the same direction.)
- uint32_t rot = rhs.GetConstant()->AsIntConstant()->GetValue() & 0x1F;
- if (rot) {
- // Rotate, mapping left rotations to right equivalents if necessary.
- // (e.g. left by 2 bits == right by 30.)
- __ Ror(out, in, is_left ? (0x20 - rot) : rot);
- } else if (out != in) {
- __ Mov(out, in);
- }
- } else {
- if (is_left) {
- __ rsb(out, rhs.AsRegister<Register>(), ShifterOperand(0));
- __ Ror(out, in, out);
- } else {
- __ Ror(out, in, rhs.AsRegister<Register>());
- }
- }
-}
-
-// Gain some speed by mapping all Long rotates onto equivalent pairs of Integer
-// rotates by swapping input regs (effectively rotating by the first 32-bits of
-// a larger rotation) or flipping direction (thus treating larger right/left
-// rotations as sub-word sized rotations in the other direction) as appropriate.
-static void GenLongRotate(LocationSummary* locations,
- ArmAssembler* assembler,
- bool is_left) {
- Register in_reg_lo = locations->InAt(0).AsRegisterPairLow<Register>();
- Register in_reg_hi = locations->InAt(0).AsRegisterPairHigh<Register>();
- Location rhs = locations->InAt(1);
- Register out_reg_lo = locations->Out().AsRegisterPairLow<Register>();
- Register out_reg_hi = locations->Out().AsRegisterPairHigh<Register>();
-
- if (rhs.IsConstant()) {
- uint32_t rot = rhs.GetConstant()->AsIntConstant()->GetValue();
- // Map all left rotations to right equivalents.
- if (is_left) {
- rot = 0x40 - rot;
- }
- // Map all rotations to +ve. equivalents on the interval [0,63].
- rot &= 0x3F;
- // For rotates over a word in size, 'pre-rotate' by 32-bits to keep rotate
- // logic below to a simple pair of binary orr.
- // (e.g. 34 bits == in_reg swap + 2 bits right.)
- if (rot >= 0x20) {
- rot -= 0x20;
- std::swap(in_reg_hi, in_reg_lo);
- }
- // Rotate, or mov to out for zero or word size rotations.
- if (rot) {
- __ Lsr(out_reg_hi, in_reg_hi, rot);
- __ orr(out_reg_hi, out_reg_hi, ShifterOperand(in_reg_lo, arm::LSL, 0x20 - rot));
- __ Lsr(out_reg_lo, in_reg_lo, rot);
- __ orr(out_reg_lo, out_reg_lo, ShifterOperand(in_reg_hi, arm::LSL, 0x20 - rot));
- } else {
- __ Mov(out_reg_lo, in_reg_lo);
- __ Mov(out_reg_hi, in_reg_hi);
- }
- } else {
- Register shift_left = locations->GetTemp(0).AsRegister<Register>();
- Register shift_right = locations->GetTemp(1).AsRegister<Register>();
- Label end;
- Label right;
-
- __ and_(shift_left, rhs.AsRegister<Register>(), ShifterOperand(0x1F));
- __ Lsrs(shift_right, rhs.AsRegister<Register>(), 6);
- __ rsb(shift_right, shift_left, ShifterOperand(0x20), AL, kCcKeep);
-
- if (is_left) {
- __ b(&right, CS);
- } else {
- __ b(&right, CC);
- std::swap(shift_left, shift_right);
- }
-
- // out_reg_hi = (reg_hi << shift_left) | (reg_lo >> shift_right).
- // out_reg_lo = (reg_lo << shift_left) | (reg_hi >> shift_right).
- __ Lsl(out_reg_hi, in_reg_hi, shift_left);
- __ Lsr(out_reg_lo, in_reg_lo, shift_right);
- __ add(out_reg_hi, out_reg_hi, ShifterOperand(out_reg_lo));
- __ Lsl(out_reg_lo, in_reg_lo, shift_left);
- __ Lsr(shift_left, in_reg_hi, shift_right);
- __ add(out_reg_lo, out_reg_lo, ShifterOperand(shift_left));
- __ b(&end);
-
- // out_reg_hi = (reg_hi >> shift_right) | (reg_lo << shift_left).
- // out_reg_lo = (reg_lo >> shift_right) | (reg_hi << shift_left).
- __ Bind(&right);
- __ Lsr(out_reg_hi, in_reg_hi, shift_right);
- __ Lsl(out_reg_lo, in_reg_lo, shift_left);
- __ add(out_reg_hi, out_reg_hi, ShifterOperand(out_reg_lo));
- __ Lsr(out_reg_lo, in_reg_lo, shift_right);
- __ Lsl(shift_right, in_reg_hi, shift_left);
- __ add(out_reg_lo, out_reg_lo, ShifterOperand(shift_right));
-
- __ Bind(&end);
- }
-}
-
-void IntrinsicLocationsBuilderARM::VisitIntegerRotateRight(HInvoke* invoke) {
- LocationSummary* locations = new (arena_) LocationSummary(invoke,
- LocationSummary::kNoCall,
- kIntrinsified);
- locations->SetInAt(0, Location::RequiresRegister());
- locations->SetInAt(1, Location::RegisterOrConstant(invoke->InputAt(1)));
- locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap);
-}
-
-void IntrinsicCodeGeneratorARM::VisitIntegerRotateRight(HInvoke* invoke) {
- GenIntegerRotate(invoke->GetLocations(), GetAssembler(), /* is_left */ false);
-}
-
-void IntrinsicLocationsBuilderARM::VisitLongRotateRight(HInvoke* invoke) {
- LocationSummary* locations = new (arena_) LocationSummary(invoke,
- LocationSummary::kNoCall,
- kIntrinsified);
- locations->SetInAt(0, Location::RequiresRegister());
- if (invoke->InputAt(1)->IsConstant()) {
- locations->SetInAt(1, Location::ConstantLocation(invoke->InputAt(1)->AsConstant()));
- } else {
- locations->SetInAt(1, Location::RequiresRegister());
- locations->AddTemp(Location::RequiresRegister());
- locations->AddTemp(Location::RequiresRegister());
- }
- locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
-}
-
-void IntrinsicCodeGeneratorARM::VisitLongRotateRight(HInvoke* invoke) {
- GenLongRotate(invoke->GetLocations(), GetAssembler(), /* is_left */ false);
-}
-
-void IntrinsicLocationsBuilderARM::VisitIntegerRotateLeft(HInvoke* invoke) {
- LocationSummary* locations = new (arena_) LocationSummary(invoke,
- LocationSummary::kNoCall,
- kIntrinsified);
- locations->SetInAt(0, Location::RequiresRegister());
- locations->SetInAt(1, Location::RegisterOrConstant(invoke->InputAt(1)));
- locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
-}
-
-void IntrinsicCodeGeneratorARM::VisitIntegerRotateLeft(HInvoke* invoke) {
- GenIntegerRotate(invoke->GetLocations(), GetAssembler(), /* is_left */ true);
-}
-
-void IntrinsicLocationsBuilderARM::VisitLongRotateLeft(HInvoke* invoke) {
- LocationSummary* locations = new (arena_) LocationSummary(invoke,
- LocationSummary::kNoCall,
- kIntrinsified);
- locations->SetInAt(0, Location::RequiresRegister());
- if (invoke->InputAt(1)->IsConstant()) {
- locations->SetInAt(1, Location::ConstantLocation(invoke->InputAt(1)->AsConstant()));
- } else {
- locations->SetInAt(1, Location::RequiresRegister());
- locations->AddTemp(Location::RequiresRegister());
- locations->AddTemp(Location::RequiresRegister());
- }
- locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
-}
-
-void IntrinsicCodeGeneratorARM::VisitLongRotateLeft(HInvoke* invoke) {
- GenLongRotate(invoke->GetLocations(), GetAssembler(), /* is_left */ true);
-}
-
static void MathAbsFP(LocationSummary* locations, bool is64bit, ArmAssembler* assembler) {
Location in = locations->InAt(0);
Location out = locations->Out();
@@ -1700,8 +1528,12 @@ void IntrinsicCodeGeneratorARM::Visit ## Name(HInvoke* invoke ATTRIBUTE_UNUSED)
UNIMPLEMENTED_INTRINSIC(IntegerReverse)
UNIMPLEMENTED_INTRINSIC(IntegerReverseBytes)
+UNIMPLEMENTED_INTRINSIC(IntegerRotateLeft)
+UNIMPLEMENTED_INTRINSIC(IntegerRotateRight)
UNIMPLEMENTED_INTRINSIC(LongReverse)
UNIMPLEMENTED_INTRINSIC(LongReverseBytes)
+UNIMPLEMENTED_INTRINSIC(LongRotateLeft)
+UNIMPLEMENTED_INTRINSIC(LongRotateRight)
UNIMPLEMENTED_INTRINSIC(ShortReverseBytes)
UNIMPLEMENTED_INTRINSIC(MathMinDoubleDouble)
UNIMPLEMENTED_INTRINSIC(MathMinFloatFloat)
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-22 14:28:52 +0000