| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| /** |
| * Regression tests for loop optimizations. |
| */ |
| public class Main { |
| |
| private static native void ensureJitCompiled(Class<?> cls, String methodName); |
| |
| /// CHECK-START: int Main.earlyExitFirst(int) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.earlyExitFirst(int) loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| static int earlyExitFirst(int m) { |
| int k = 0; |
| for (int i = 0; i < 10; i++) { |
| if (i == m) { |
| return k; |
| } |
| k++; |
| } |
| return k; |
| } |
| |
| /// CHECK-START: int Main.earlyExitLast(int) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.earlyExitLast(int) loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| static int earlyExitLast(int m) { |
| int k = 0; |
| for (int i = 0; i < 10; i++) { |
| k++; |
| if (i == m) { |
| return k; |
| } |
| } |
| return k; |
| } |
| |
| /// CHECK-START: int Main.earlyExitNested() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop2:B\d+>> outer_loop:<<Loop1>> |
| /// CHECK-DAG: Phi loop:<<Loop2>> outer_loop:<<Loop1>> |
| // |
| /// CHECK-START: int Main.earlyExitNested() loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop1>> outer_loop:none |
| // |
| /// CHECK-START: int Main.earlyExitNested() loop_optimization (after) |
| /// CHECK-NOT: Phi loop:{{B\d+}} outer_loop:{{B\d+}} |
| static int earlyExitNested() { |
| int offset = 0; |
| for (int i = 0; i < 2; i++) { |
| int start = offset; |
| // This loop can be removed. |
| for (int j = 0; j < 2; j++) { |
| offset++; |
| } |
| if (i == 1) { |
| return start; |
| } |
| } |
| return 0; |
| } |
| |
| // Regression test for b/33774618: transfer operations involving |
| // narrowing linear induction should be done correctly. |
| // |
| /// CHECK-START: int Main.transferNarrowWrap() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.transferNarrowWrap() loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| static int transferNarrowWrap() { |
| short x = 0; |
| int w = 10; |
| int v = 3; |
| for (int i = 0; i < 10; i++) { |
| v = w + 1; // transfer on wrap-around |
| w = x; // wrap-around |
| x += 2; // narrowing linear |
| } |
| return v; |
| } |
| |
| // Regression test for b/33774618: transfer operations involving |
| // narrowing linear induction should be done correctly |
| // (currently rejected, could be improved). |
| // |
| /// CHECK-START: int Main.polynomialShort() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.polynomialShort() loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| static int polynomialShort() { |
| int x = 0; |
| for (short i = 0; i < 10; i++) { |
| x = x - i; // polynomial on narrowing linear |
| } |
| return x; |
| } |
| |
| // Regression test for b/33774618: transfer operations involving |
| // narrowing linear induction should be done correctly |
| // (currently rejected, could be improved). |
| // |
| /// CHECK-START: int Main.polynomialIntFromLong() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.polynomialIntFromLong() loop_optimization (after) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| static int polynomialIntFromLong() { |
| int x = 0; |
| for (long i = 0; i < 10; i++) { |
| x = x - (int) i; // polynomial on narrowing linear |
| } |
| return x; |
| } |
| |
| /// CHECK-START: int Main.polynomialInt() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.polynomialInt() loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: int Main.polynomialInt() instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Int:i\d+>> IntConstant -45 loop:none |
| /// CHECK-DAG: Return [<<Int>>] loop:none |
| static int polynomialInt() { |
| int x = 0; |
| for (int i = 0; i < 10; i++) { |
| x = x - i; |
| } |
| return x; |
| } |
| |
| // Regression test for b/34779592 (found with fuzz testing): overflow for last value |
| // of division truncates to zero, for multiplication it simply truncates. |
| // |
| /// CHECK-START: int Main.geoIntDivLastValue(int) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.geoIntDivLastValue(int) loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: int Main.geoIntDivLastValue(int) instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Int:i\d+>> IntConstant 0 loop:none |
| /// CHECK-DAG: Return [<<Int>>] loop:none |
| static int geoIntDivLastValue(int x) { |
| for (int i = 0; i < 2; i++) { |
| x /= 1081788608; |
| } |
| return x; |
| } |
| |
| /// CHECK-START: int Main.geoIntMulLastValue(int) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: int Main.geoIntMulLastValue(int) loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: int Main.geoIntMulLastValue(int) instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Par:i\d+>> ParameterValue loop:none |
| /// CHECK-DAG: <<Int:i\d+>> IntConstant -194211840 loop:none |
| /// CHECK-DAG: <<Mul:i\d+>> Mul [<<Par>>,<<Int>>] loop:none |
| /// CHECK-DAG: Return [<<Mul>>] loop:none |
| static int geoIntMulLastValue(int x) { |
| for (int i = 0; i < 2; i++) { |
| x *= 1081788608; |
| } |
| return x; |
| } |
| |
| /// CHECK-START: long Main.geoLongDivLastValue(long) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: long Main.geoLongDivLastValue(long) loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: long Main.geoLongDivLastValue(long) instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Long:j\d+>> LongConstant 0 loop:none |
| /// CHECK-DAG: Return [<<Long>>] loop:none |
| // |
| // Tests overflow in the divisor (while updating intermediate result). |
| static long geoLongDivLastValue(long x) { |
| for (int i = 0; i < 10; i++) { |
| x /= 1081788608; |
| } |
| return x; |
| } |
| |
| /// CHECK-START: long Main.geoLongDivLastValue() loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: long Main.geoLongDivLastValue() loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: long Main.geoLongDivLastValue() instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Long:j\d+>> LongConstant 0 loop:none |
| /// CHECK-DAG: Return [<<Long>>] loop:none |
| // |
| // Tests overflow in the divisor (while updating base). |
| static long geoLongDivLastValue() { |
| long x = -1; |
| for (int i2 = 0; i2 < 2; i2++) { |
| x /= (Long.MAX_VALUE); |
| } |
| return x; |
| } |
| |
| /// CHECK-START: long Main.geoLongMulLastValue(long) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: long Main.geoLongMulLastValue(long) loop_optimization (after) |
| /// CHECK-NOT: Phi |
| // |
| /// CHECK-START: long Main.geoLongMulLastValue(long) instruction_simplifier$after_bce (after) |
| /// CHECK-DAG: <<Par:j\d+>> ParameterValue loop:none |
| /// CHECK-DAG: <<Long:j\d+>> LongConstant -8070450532247928832 loop:none |
| /// CHECK-DAG: <<Mul:j\d+>> Mul [<<Par>>,<<Long>>] loop:none |
| /// CHECK-DAG: Return [<<Mul>>] loop:none |
| static long geoLongMulLastValue(long x) { |
| for (int i = 0; i < 10; i++) { |
| x *= 1081788608; |
| } |
| return x; |
| } |
| |
| // If vectorized, the narrowing subscript should not cause |
| // type inconsistencies in the synthesized code. |
| static void narrowingSubscript(float[] a) { |
| float val = 2.0f; |
| for (long i = 0; i < a.length; i++) { |
| a[(int) i] += val; |
| } |
| } |
| |
| // If vectorized, invariant stride should be recognized |
| // as a reduction, not a unit stride in outer loop. |
| static void reduc(int[] xx, int[] yy) { |
| for (int i0 = 0; i0 < 2; i0++) { |
| for (int i1 = 0; i1 < 469; i1++) { |
| xx[i0] -= (++yy[i1]); |
| } |
| } |
| } |
| |
| /// CHECK-START: void Main.string2Bytes(char[], java.lang.String) loop_optimization (before) |
| /// CHECK-DAG: ArrayGet loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: ArraySet loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-ARM: void Main.string2Bytes(char[], java.lang.String) loop_optimization (after) |
| /// CHECK-NOT: VecLoad |
| // |
| /// CHECK-START-ARM64: void Main.string2Bytes(char[], java.lang.String) loop_optimization (after) |
| /// CHECK-DAG: VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: VecStore loop:<<Loop>> outer_loop:none |
| // |
| // NOTE: should correctly deal with compressed and uncompressed cases. |
| // |
| /// CHECK-START-MIPS64: void Main.string2Bytes(char[], java.lang.String) loop_optimization (after) |
| /// CHECK-NOT: VecLoad |
| private static void string2Bytes(char[] a, String b) { |
| int min = Math.min(a.length, b.length()); |
| for (int i = 0; i < min; i++) { |
| a[i] = b.charAt(i); |
| } |
| } |
| |
| /// CHECK-START-ARM: void Main.$noinline$stringToShorts(short[], java.lang.String) loop_optimization (after) |
| /// CHECK-NOT: VecLoad |
| |
| /// CHECK-START-ARM64: void Main.$noinline$stringToShorts(short[], java.lang.String) loop_optimization (after) |
| /// CHECK-DAG: VecLoad loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: VecStore loop:<<Loop>> outer_loop:none |
| private static void $noinline$stringToShorts(short[] dest, String src) { |
| int min = Math.min(dest.length, src.length()); |
| for (int i = 0; i < min; ++i) { |
| dest[i] = (short) src.charAt(i); |
| } |
| } |
| |
| // A strange function that does not inline. |
| private static void $noinline$foo(boolean x, int n) { |
| if (n < 0) |
| throw new Error("oh no"); |
| if (n > 100) { |
| $noinline$foo(!x, n - 1); |
| $noinline$foo(!x, n - 2); |
| $noinline$foo(!x, n - 3); |
| $noinline$foo(!x, n - 4); |
| } |
| } |
| |
| // A loop with environment uses of x (the terminating condition). As exposed by bug |
| // b/37247891, the loop can be unrolled, but should handle the (unlikely, but clearly |
| // not impossible) environment uses of the terminating condition in a correct manner. |
| private static void envUsesInCond() { |
| boolean x = false; |
| for (int i = 0; !(x = i >= 1); i++) { |
| $noinline$foo(true, i); |
| } |
| } |
| |
| /// CHECK-START: void Main.oneBoth(short[], char[]) loop_optimization (before) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<One>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<One>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-ARM: void Main.oneBoth(short[], char[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi:i\d+>>,<<Repl>>] loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<Repl>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-ARM64: void Main.oneBoth(short[], char[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi:i\d+>>,<<Repl>>] loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<Repl>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-MIPS64: void Main.oneBoth(short[], char[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi:i\d+>>,<<Repl>>] loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<Repl>>] loop:<<Loop>> outer_loop:none |
| // |
| // Bug b/37764324: integral same-length packed types can be mixed freely. |
| private static void oneBoth(short[] a, char[] b) { |
| for (int i = 0; i < Math.min(a.length, b.length); i++) { |
| a[i] = 1; |
| b[i] = 1; |
| } |
| } |
| |
| // Bug b/37768917: potential dynamic BCE vs. loop optimizations |
| // case should be deal with correctly (used to DCHECK fail). |
| private static void arrayInTripCount(int[] a, byte[] b, int n) { |
| for (int k = 0; k < n; k++) { |
| for (int i = 0, u = a[0]; i < u; i++) { |
| b[i] += 2; |
| } |
| } |
| } |
| |
| /// CHECK-START: void Main.typeConv(byte[], byte[]) loop_optimization (before) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet [{{l\d+}},<<Phi>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<One>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Add>>] loop:<<Loop>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START-ARM: void Main.typeConv(byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: <<Load:d\d+>> VecLoad [{{l\d+}},<<Phi1:i\d+>>] loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Vadd:d\d+>> VecAdd [<<Load>>,<<Repl>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi1>>,<<Vadd>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet [{{l\d+}},<<Phi2:i\d+>>] loop:<<Loop2:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<One>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Add>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi2>>,<<Cnv>>] loop:<<Loop2>> outer_loop:none |
| // |
| /// CHECK-START-ARM64: void Main.typeConv(byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: <<Load:d\d+>> VecLoad [{{l\d+}},<<Phi1:i\d+>>] loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Vadd:d\d+>> VecAdd [<<Load>>,<<Repl>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi1>>,<<Vadd>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet [{{l\d+}},<<Phi2:i\d+>>] loop:<<Loop2:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<One>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Add>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi2>>,<<Cnv>>] loop:<<Loop2>> outer_loop:none |
| // |
| /// CHECK-START-MIPS64: void Main.typeConv(byte[], byte[]) loop_optimization (after) |
| /// CHECK-DAG: <<One:i\d+>> IntConstant 1 loop:none |
| /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<One>>] loop:none |
| /// CHECK-DAG: <<Load:d\d+>> VecLoad [{{l\d+}},<<Phi1:i\d+>>] loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Vadd:d\d+>> VecAdd [<<Load>>,<<Repl>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: VecStore [{{l\d+}},<<Phi1>>,<<Vadd>>] loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: <<Get:b\d+>> ArrayGet [{{l\d+}},<<Phi2:i\d+>>] loop:<<Loop2:B\d+>> outer_loop:none |
| /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<One>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Add>>] loop:<<Loop2>> outer_loop:none |
| /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi2>>,<<Cnv>>] loop:<<Loop2>> outer_loop:none |
| // |
| // Scalar code in cleanup loop uses correct byte type on array get and type conversion. |
| private static void typeConv(byte[] a, byte[] b) { |
| int len = Math.min(a.length, b.length); |
| for (int i = 0; i < len; i++) { |
| a[i] = (byte) (b[i] + 1); |
| } |
| } |
| |
| // Environment of an instruction, removed during SimplifyInduction, should be adjusted. |
| // |
| /// CHECK-START: void Main.inductionMax(int[]) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop>> outer_loop:none |
| // |
| /// CHECK-START: void Main.inductionMax(int[]) loop_optimization (after) |
| /// CHECK-NOT: Phi |
| private static void inductionMax(int[] a) { |
| int s = 0; |
| for (int i = 0; i < 10; i++) { |
| s = Math.max(s, 5); |
| } |
| } |
| |
| /// CHECK-START: int Main.feedsIntoDeopt(int[]) loop_optimization (before) |
| /// CHECK-DAG: Phi loop:<<Loop1:B\d+>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop1>> outer_loop:none |
| /// CHECK-DAG: Phi loop:<<Loop2:B\d+>> outer_loop:none |
| // |
| /// CHECK-EVAL: "<<Loop1>>" != "<<Loop2>>" |
| // |
| /// CHECK-START: int Main.feedsIntoDeopt(int[]) loop_optimization (after) |
| /// CHECK-DAG: Phi loop:{{B\d+}} outer_loop:none |
| /// CHECK-NOT: Phi |
| static int feedsIntoDeopt(int[] a) { |
| // Reduction should be removed. |
| int r = 0; |
| for (int i = 0; i < 100; i++) { |
| r += 10; |
| } |
| // Even though uses feed into deopts of BCE. |
| for (int i = 1; i < 100; i++) { |
| a[i] = a[i - 1]; |
| } |
| return r; |
| } |
| |
| static int absCanBeNegative(int x) { |
| int a[] = { 1, 2, 3 }; |
| int y = 0; |
| for (int i = Math.abs(x); i < a.length; i++) { |
| y += a[i]; |
| } |
| return y; |
| } |
| |
| // b/65478356: sum up 2-dim array. |
| static int sum(int[][] a) { |
| int sum = 0; |
| for (int y = 0; y < a.length; y++) { |
| int[] aa = a[y]; |
| for (int x = 0; x < aa.length; x++) { |
| sum += aa[x]; |
| } |
| } |
| return sum; |
| } |
| |
| // Large loop body should not break unrolling computation. |
| static void largeBody(int[] x) { |
| for (int i = 0; i < 100; i++) { |
| x[i] = x[i] * 1 + x[i] * 2 + x[i] * 3 + x[i] * 4 + x[i] * 5 + x[i] * 6 + |
| x[i] * 7 + x[i] * 8 + x[i] * 9 + x[i] * 10 + x[i] * 11 + x[i] * 12 + |
| x[i] * 13 + x[i] * 14 + x[i] * 15 + x[i] * 1 + x[i] * 2 + x[i] * 3 + x[i] * 4 + |
| x[i] * 5 + x[i] * 6 + x[i] * 7 + x[i] * 8 + x[i] * 9 + x[i] * 10 + x[i] * 11 + |
| x[i] * 12 + x[i] * 13 + x[i] * 14 + x[i] * 15 + x[i] * 1 + x[i] * 2 + x[i] * 3 + |
| x[i] * 4 + x[i] * 5; |
| } |
| } |
| |
| // Mixed of 16-bit and 8-bit array references. |
| static void castAndNarrow(byte[] x, char[] y) { |
| for (int i = 0; i < x.length; i++) { |
| x[i] = (byte) ((short) y[i] + 1); |
| } |
| } |
| |
| // Avoid bad scheduler-SIMD interaction. |
| static int doNotMoveSIMD() { |
| int sum = 0; |
| for (int j = 0; j <= 8; j++) { |
| int[] a = new int[17]; // a[i] = 0; |
| // ConstructorFence ? |
| for (int i = 0; i < a.length; i++) { |
| a[i] += 1; // a[i] = 1; |
| } |
| for (int i = 0; i < a.length; i++) { |
| sum += a[i]; // expect a[i] = 1; |
| } |
| } |
| return sum; |
| } |
| |
| // Ensure spilling saves full SIMD values. |
| private static final int reduction32Values(int[] a, int[] b, int[] c, int[] d) { |
| int s0 = 0; |
| int s1 = 0; |
| int s2 = 0; |
| int s3 = 0; |
| int s4 = 0; |
| int s5 = 0; |
| int s6 = 0; |
| int s7 = 0; |
| int s8 = 0; |
| int s9 = 0; |
| int s10 = 0; |
| int s11 = 0; |
| int s12 = 0; |
| int s13 = 0; |
| int s14 = 0; |
| int s15 = 0; |
| int s16 = 0; |
| int s17 = 0; |
| int s18 = 0; |
| int s19 = 0; |
| int s20 = 0; |
| int s21 = 0; |
| int s22 = 0; |
| int s23 = 0; |
| int s24 = 0; |
| int s25 = 0; |
| int s26 = 0; |
| int s27 = 0; |
| int s28 = 0; |
| int s29 = 0; |
| int s30 = 0; |
| int s31 = 0; |
| for (int i = 1; i < 100; i++) { |
| s0 += a[i]; |
| s1 += b[i]; |
| s2 += c[i]; |
| s3 += d[i]; |
| s4 += a[i]; |
| s5 += b[i]; |
| s6 += c[i]; |
| s7 += d[i]; |
| s8 += a[i]; |
| s9 += b[i]; |
| s10 += c[i]; |
| s11 += d[i]; |
| s12 += a[i]; |
| s13 += b[i]; |
| s14 += c[i]; |
| s15 += d[i]; |
| s16 += a[i]; |
| s17 += b[i]; |
| s18 += c[i]; |
| s19 += d[i]; |
| s20 += a[i]; |
| s21 += b[i]; |
| s22 += c[i]; |
| s23 += d[i]; |
| s24 += a[i]; |
| s25 += b[i]; |
| s26 += c[i]; |
| s27 += d[i]; |
| s28 += a[i]; |
| s29 += b[i]; |
| s30 += c[i]; |
| s31 += d[i]; |
| } |
| return s0 + s1 + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10 + s11 + s12 + s13 + s14 + s15 + |
| s16 + s17 + s18 + s19 + s20 + s21 + s22 + s23 + |
| s24 + s25 + s26 + s27 + s28 + s29 + s30 + s31; |
| } |
| |
| public static int reductionIntoReplication() { |
| int[] a = { 1, 2, 3, 4 }; |
| int x = 0; |
| for (int i = 0; i < 4; i++) { |
| x += a[i]; |
| } |
| for (int i = 0; i < 4; i++) { |
| a[i] = x; |
| } |
| return a[3]; |
| } |
| |
| public static void main(String[] args) { |
| System.loadLibrary(args[0]); |
| |
| expectEquals(10, earlyExitFirst(-1)); |
| for (int i = 0; i <= 10; i++) { |
| expectEquals(i, earlyExitFirst(i)); |
| } |
| expectEquals(10, earlyExitFirst(11)); |
| |
| expectEquals(10, earlyExitLast(-1)); |
| for (int i = 0; i < 10; i++) { |
| expectEquals(i + 1, earlyExitLast(i)); |
| } |
| expectEquals(10, earlyExitLast(10)); |
| expectEquals(10, earlyExitLast(11)); |
| |
| expectEquals(2, earlyExitNested()); |
| |
| expectEquals(17, transferNarrowWrap()); |
| expectEquals(-45, polynomialShort()); |
| expectEquals(-45, polynomialIntFromLong()); |
| expectEquals(-45, polynomialInt()); |
| |
| expectEquals(0, geoIntDivLastValue(0)); |
| expectEquals(0, geoIntDivLastValue(1)); |
| expectEquals(0, geoIntDivLastValue(2)); |
| expectEquals(0, geoIntDivLastValue(1081788608)); |
| expectEquals(0, geoIntDivLastValue(-1081788608)); |
| expectEquals(0, geoIntDivLastValue(2147483647)); |
| expectEquals(0, geoIntDivLastValue(-2147483648)); |
| |
| expectEquals( 0, geoIntMulLastValue(0)); |
| expectEquals( -194211840, geoIntMulLastValue(1)); |
| expectEquals( -388423680, geoIntMulLastValue(2)); |
| expectEquals(-1041498112, geoIntMulLastValue(1081788608)); |
| expectEquals( 1041498112, geoIntMulLastValue(-1081788608)); |
| expectEquals( 194211840, geoIntMulLastValue(2147483647)); |
| expectEquals( 0, geoIntMulLastValue(-2147483648)); |
| |
| expectEquals(0L, geoLongDivLastValue(0L)); |
| expectEquals(0L, geoLongDivLastValue(1L)); |
| expectEquals(0L, geoLongDivLastValue(2L)); |
| expectEquals(0L, geoLongDivLastValue(1081788608L)); |
| expectEquals(0L, geoLongDivLastValue(-1081788608L)); |
| expectEquals(0L, geoLongDivLastValue(2147483647L)); |
| expectEquals(0L, geoLongDivLastValue(-2147483648L)); |
| expectEquals(0L, geoLongDivLastValue(9223372036854775807L)); |
| expectEquals(0L, geoLongDivLastValue(-9223372036854775808L)); |
| |
| expectEquals(0L, geoLongDivLastValue()); |
| |
| expectEquals( 0L, geoLongMulLastValue(0L)); |
| expectEquals(-8070450532247928832L, geoLongMulLastValue(1L)); |
| expectEquals( 2305843009213693952L, geoLongMulLastValue(2L)); |
| expectEquals( 0L, geoLongMulLastValue(1081788608L)); |
| expectEquals( 0L, geoLongMulLastValue(-1081788608L)); |
| expectEquals( 8070450532247928832L, geoLongMulLastValue(2147483647L)); |
| expectEquals( 0L, geoLongMulLastValue(-2147483648L)); |
| expectEquals( 8070450532247928832L, geoLongMulLastValue(9223372036854775807L)); |
| expectEquals( 0L, geoLongMulLastValue(-9223372036854775808L)); |
| |
| float[] a = new float[16]; |
| narrowingSubscript(a); |
| for (int i = 0; i < 16; i++) { |
| expectEquals(2.0f, a[i]); |
| } |
| |
| int[] xx = new int[2]; |
| int[] yy = new int[469]; |
| reduc(xx, yy); |
| expectEquals(-469, xx[0]); |
| expectEquals(-938, xx[1]); |
| for (int i = 0; i < 469; i++) { |
| expectEquals(2, yy[i]); |
| } |
| |
| char[] aa = new char[23]; |
| String bb = "hello world how are you"; |
| string2Bytes(aa, bb); |
| for (int i = 0; i < aa.length; i++) { |
| expectEquals(aa[i], bb.charAt(i)); |
| } |
| String cc = "\u1010\u2020llo world how are y\u3030\u4040"; |
| string2Bytes(aa, cc); |
| for (int i = 0; i < aa.length; i++) { |
| expectEquals(aa[i], cc.charAt(i)); |
| } |
| |
| short[] s2s = new short[12]; |
| $noinline$stringToShorts(s2s, "abcdefghijkl"); |
| for (int i = 0; i < s2s.length; ++i) { |
| expectEquals((short) "abcdefghijkl".charAt(i), s2s[i]); |
| } |
| |
| envUsesInCond(); |
| |
| short[] dd = new short[23]; |
| oneBoth(dd, aa); |
| for (int i = 0; i < aa.length; i++) { |
| expectEquals(aa[i], 1); |
| expectEquals(dd[i], 1); |
| } |
| |
| xx[0] = 10; |
| byte[] bt = new byte[10]; |
| arrayInTripCount(xx, bt, 20); |
| for (int i = 0; i < bt.length; i++) { |
| expectEquals(40, bt[i]); |
| } |
| |
| byte[] b1 = new byte[259]; // few extra iterations |
| byte[] b2 = new byte[259]; |
| for (int i = 0; i < 259; i++) { |
| b1[i] = 0; |
| b2[i] = (byte) i; |
| } |
| typeConv(b1, b2); |
| for (int i = 0; i < 259; i++) { |
| expectEquals((byte)(i + 1), b1[i]); |
| } |
| |
| inductionMax(yy); |
| |
| int[] f = new int[100]; |
| f[0] = 11; |
| expectEquals(1000, feedsIntoDeopt(f)); |
| for (int i = 0; i < 100; i++) { |
| expectEquals(11, f[i]); |
| } |
| |
| expectEquals(0, absCanBeNegative(-3)); |
| expectEquals(3, absCanBeNegative(-2)); |
| expectEquals(5, absCanBeNegative(-1)); |
| expectEquals(6, absCanBeNegative(0)); |
| expectEquals(5, absCanBeNegative(1)); |
| expectEquals(3, absCanBeNegative(2)); |
| expectEquals(0, absCanBeNegative(3)); |
| expectEquals(0, absCanBeNegative(Integer.MAX_VALUE)); |
| // Abs(min_int) = min_int. |
| int verify = 0; |
| try { |
| absCanBeNegative(Integer.MIN_VALUE); |
| verify = 1; |
| } catch (ArrayIndexOutOfBoundsException e) { |
| verify = 2; |
| } |
| expectEquals(2, verify); |
| |
| int[][] x = new int[128][128]; |
| for (int i = 0; i < 128; i++) { |
| for (int j = 0; j < 128; j++) { |
| x[i][j] = -i - j; |
| } |
| } |
| expectEquals(-2080768, sum(x)); |
| |
| largeBody(f); |
| for (int i = 0; i < 100; i++) { |
| expectEquals(2805, f[i]); |
| } |
| |
| char[] cx = new char[259]; |
| for (int i = 0; i < 259; i++) { |
| cx[i] = (char) (i - 100); |
| } |
| castAndNarrow(b1, cx); |
| for (int i = 0; i < 259; i++) { |
| expectEquals((byte)((short) cx[i] + 1), b1[i]); |
| } |
| |
| expectEquals(153, doNotMoveSIMD()); |
| |
| // This test exposed SIMDization issues on x86 and x86_64 |
| // so we make sure the test runs with JIT enabled. |
| ensureJitCompiled(Main.class, "reduction32Values"); |
| { |
| int[] a1 = new int[100]; |
| int[] a2 = new int[100]; |
| int[] a3 = new int[100]; |
| int[] a4 = new int[100]; |
| for (int i = 0; i < 100; i++) { |
| a1[i] = i; |
| a2[i] = 1; |
| a3[i] = 100 - i; |
| a4[i] = i % 16; |
| } |
| expectEquals(85800, reduction32Values(a1, a2, a3, a4)); |
| } |
| |
| expectEquals(10, reductionIntoReplication()); |
| |
| System.out.println("passed"); |
| } |
| |
| private static void expectEquals(int expected, int result) { |
| if (expected != result) { |
| throw new Error("Expected: " + expected + ", found: " + result); |
| } |
| } |
| |
| private static void expectEquals(long expected, long result) { |
| if (expected != result) { |
| throw new Error("Expected: " + expected + ", found: " + result); |
| } |
| } |
| |
| private static void expectEquals(float expected, float result) { |
| if (expected != result) { |
| throw new Error("Expected: " + expected + ", found: " + result); |
| } |
| } |
| } |