| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * Tests for halving-add idiomatic vectorization. |
| * |
| * Alternative version expressed with logical shift right |
| * in the higher precision (has no impact on idiom). |
| */ |
| public class HaddAltByte { |
| |
| private static final int N = 256; |
| private static final int M = N * N + 15; |
| |
| static byte[] sB1 = new byte[M]; |
| static byte[] sB2 = new byte[M]; |
| static byte[] sBo = new byte[M]; |
| |
| /// CHECK-START: void HaddAltByte.halving_add_signed(byte[], byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.halving_add_signed(byte[], byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] packed_type:Int8 rounded:false loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void halving_add_signed(byte[] b1, byte[] b2, byte[] bo) { |
| int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) ((b1[i] + b2[i]) >>> 1); |
| } |
| } |
| |
| /// CHECK-START: void HaddAltByte.halving_add_unsigned(byte[], byte[], byte[]) instruction_simplifier (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},{{i\d+}},<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: void HaddAltByte.halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:a\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:a\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] packed_type:Uint8 rounded:false loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo) { |
| int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) (((b1[i] & 0xff) + (b2[i] & 0xff)) >>> 1); |
| } |
| } |
| |
| /// CHECK-START: void HaddAltByte.rounding_halving_add_signed(byte[], byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add1:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.rounding_halving_add_signed(byte[], byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] packed_type:Int8 rounded:true loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void rounding_halving_add_signed(byte[] b1, byte[] b2, byte[] bo) { |
| int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) ((b1[i] + b2[i] + 1) >>> 1); |
| } |
| } |
| |
| /// CHECK-START: void HaddAltByte.rounding_halving_add_unsigned(byte[], byte[], byte[]) instruction_simplifier (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add1:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},{{i\d+}},<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: void HaddAltByte.rounding_halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get1:a\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Get2:a\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add1:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.rounding_halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] packed_type:Uint8 rounded:true loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void rounding_halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo) { |
| int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) (((b1[i] & 0xff) + (b2[i] & 0xff) + 1) >>> 1); |
| } |
| } |
| |
| /// CHECK-START: void HaddAltByte.halving_add_signed_constant(byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<I127:i\d+>> IntConstant 127 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<I127>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.halving_add_signed_constant(byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<I127:i\d+>> IntConstant 127 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<I127>>] loop:none |
| /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] packed_type:Int8 rounded:false loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void halving_add_signed_constant(byte[] b1, byte[] bo) { |
| int min_length = Math.min(bo.length, b1.length); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) ((b1[i] + 0x7f) >>> 1); |
| } |
| } |
| |
| /// CHECK-START: void HaddAltByte.halving_add_unsigned_constant(byte[], byte[]) instruction_simplifier (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<And:i\d+>> And [<<Get>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<And>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},{{i\d+}},<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: void HaddAltByte.halving_add_unsigned_constant(byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get:a\d+>> ArrayGet loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<I255>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<UShr:i\d+>> UShr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<UShr>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-{ARM,ARM64}: void HaddAltByte.halving_add_unsigned_constant(byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<I255>>] loop:none |
| /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] packed_type:Uint8 rounded:false loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},{{i\d+}},<<HAdd>>] loop:<<Loop>> outer_loop:none |
| private static void halving_add_unsigned_constant(byte[] b1, byte[] bo) { |
| int min_length = Math.min(bo.length, b1.length); |
| for (int i = 0; i < min_length; i++) { |
| bo[i] = (byte) (((b1[i] & 0xff) + 0xff) >>> 1); |
| } |
| } |
| |
| public static void main() { |
| // Initialize cross-values to test all cases, and also |
| // set up some extra values to exercise the cleanup loop. |
| int k = 0; |
| for (int i = 0; i < N; i++) { |
| for (int j = 0; j < N; j++) { |
| sB1[k] = (byte) i; |
| sB2[k] = (byte) j; |
| k++; |
| } |
| } |
| for (int i = 0; i < 15; i++) { |
| sB1[k] = (byte) i; |
| sB2[k] = 100; |
| k++; |
| } |
| expectEquals(k, M); |
| |
| // Test halving add idioms. Note that the expected result is computed |
| // with the arithmetic >> to demonstrate the computed narrower result |
| // does not depend on the wider >> or >>>. |
| halving_add_signed(sB1, sB2, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) ((sB1[i] + sB2[i]) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| halving_add_unsigned(sB1, sB2, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) (((sB1[i] & 0xff) + (sB2[i] & 0xff)) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| rounding_halving_add_signed(sB1, sB2, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) ((sB1[i] + sB2[i] + 1) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| rounding_halving_add_unsigned(sB1, sB2, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) (((sB1[i] & 0xff) + (sB2[i] & 0xff) + 1) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| halving_add_signed_constant(sB1, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) ((sB1[i] + 0x7f) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| halving_add_unsigned_constant(sB1, sBo); |
| for (int i = 0; i < M; i++) { |
| byte e = (byte) (((sB1[i] & 0xff) + 0xff) >> 1); |
| expectEquals(e, sBo[i]); |
| } |
| |
| System.out.println("HaddAltByte passed"); |
| } |
| |
| private static void expectEquals(int expected, int result) { |
| if (expected != result) { |
| throw new Error("Expected: " + expected + ", found: " + result); |
| } |
| } |
| } |