ARM: Implement Reverse bits and bytes intrinsic.
- IntegerReverse
- LongReverse
- IntegerReverseBytes
- LongReverseBytes
- ShortReverseBytes
Change-Id: I3ec202696b245148a0237ff6e46ac3f1a3f8402a
diff --git a/compiler/optimizing/intrinsics_arm.cc b/compiler/optimizing/intrinsics_arm.cc
index ea8669f..8cbdcbb 100644
--- a/compiler/optimizing/intrinsics_arm.cc
+++ b/compiler/optimizing/intrinsics_arm.cc
@@ -1825,6 +1825,90 @@
GenFPFPToFPCall(invoke, GetAssembler(), codegen_, kQuickNextAfter);
}
+void IntrinsicLocationsBuilderARM::VisitIntegerReverse(HInvoke* invoke) {
+ CreateIntToIntLocations(arena_, invoke);
+}
+
+void IntrinsicCodeGeneratorARM::VisitIntegerReverse(HInvoke* invoke) {
+ ArmAssembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ Register out = locations->Out().AsRegister<Register>();
+ Register in = locations->InAt(0).AsRegister<Register>();
+
+ __ rbit(out, in);
+}
+
+void IntrinsicLocationsBuilderARM::VisitLongReverse(HInvoke* invoke) {
+ LocationSummary* locations = new (arena_) LocationSummary(invoke,
+ LocationSummary::kNoCall,
+ kIntrinsified);
+ locations->SetInAt(0, Location::RequiresRegister());
+ locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
+}
+
+void IntrinsicCodeGeneratorARM::VisitLongReverse(HInvoke* invoke) {
+ ArmAssembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ Register in_reg_lo = locations->InAt(0).AsRegisterPairLow<Register>();
+ Register in_reg_hi = locations->InAt(0).AsRegisterPairHigh<Register>();
+ Register out_reg_lo = locations->Out().AsRegisterPairLow<Register>();
+ Register out_reg_hi = locations->Out().AsRegisterPairHigh<Register>();
+
+ __ rbit(out_reg_lo, in_reg_hi);
+ __ rbit(out_reg_hi, in_reg_lo);
+}
+
+void IntrinsicLocationsBuilderARM::VisitIntegerReverseBytes(HInvoke* invoke) {
+ CreateIntToIntLocations(arena_, invoke);
+}
+
+void IntrinsicCodeGeneratorARM::VisitIntegerReverseBytes(HInvoke* invoke) {
+ ArmAssembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ Register out = locations->Out().AsRegister<Register>();
+ Register in = locations->InAt(0).AsRegister<Register>();
+
+ __ rev(out, in);
+}
+
+void IntrinsicLocationsBuilderARM::VisitLongReverseBytes(HInvoke* invoke) {
+ LocationSummary* locations = new (arena_) LocationSummary(invoke,
+ LocationSummary::kNoCall,
+ kIntrinsified);
+ locations->SetInAt(0, Location::RequiresRegister());
+ locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
+}
+
+void IntrinsicCodeGeneratorARM::VisitLongReverseBytes(HInvoke* invoke) {
+ ArmAssembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ Register in_reg_lo = locations->InAt(0).AsRegisterPairLow<Register>();
+ Register in_reg_hi = locations->InAt(0).AsRegisterPairHigh<Register>();
+ Register out_reg_lo = locations->Out().AsRegisterPairLow<Register>();
+ Register out_reg_hi = locations->Out().AsRegisterPairHigh<Register>();
+
+ __ rev(out_reg_lo, in_reg_hi);
+ __ rev(out_reg_hi, in_reg_lo);
+}
+
+void IntrinsicLocationsBuilderARM::VisitShortReverseBytes(HInvoke* invoke) {
+ CreateIntToIntLocations(arena_, invoke);
+}
+
+void IntrinsicCodeGeneratorARM::VisitShortReverseBytes(HInvoke* invoke) {
+ ArmAssembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ Register out = locations->Out().AsRegister<Register>();
+ Register in = locations->InAt(0).AsRegister<Register>();
+
+ __ revsh(out, in);
+}
+
// Unimplemented intrinsics.
#define UNIMPLEMENTED_INTRINSIC(Name) \
@@ -1834,12 +1918,7 @@
}
UNIMPLEMENTED_INTRINSIC(IntegerBitCount)
-UNIMPLEMENTED_INTRINSIC(IntegerReverse)
-UNIMPLEMENTED_INTRINSIC(IntegerReverseBytes)
UNIMPLEMENTED_INTRINSIC(LongBitCount)
-UNIMPLEMENTED_INTRINSIC(LongReverse)
-UNIMPLEMENTED_INTRINSIC(LongReverseBytes)
-UNIMPLEMENTED_INTRINSIC(ShortReverseBytes)
UNIMPLEMENTED_INTRINSIC(MathMinDoubleDouble)
UNIMPLEMENTED_INTRINSIC(MathMinFloatFloat)
UNIMPLEMENTED_INTRINSIC(MathMaxDoubleDouble)