mlir/unittests/Interfaces/InferIntRangeInterfaceTest.cpp

   1 //===- InferIntRangeInterfaceTest.cpp - Unit Tests for InferIntRange... --===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "mlir/Interfaces/InferIntRangeInterface.h"
  10 #include "llvm/ADT/APInt.h"
  11 #include <limits>
  12
  13 #include <gtest/gtest.h>
  14
  15 using namespace mlir;
  16
  17 TEST(IntRangeAttrs, BasicConstructors) {
  18   APInt zero = APInt::getZero(64);
  19   APInt two(64, 2);
  20   APInt three(64, 3);
  21   ConstantIntRanges boundedAbove(zero, two, zero, three);
  22   EXPECT_EQ(boundedAbove.umin(), zero);
  23   EXPECT_EQ(boundedAbove.umax(), two);
  24   EXPECT_EQ(boundedAbove.smin(), zero);
  25   EXPECT_EQ(boundedAbove.smax(), three);
  26 }
  27
  28 TEST(IntRangeAttrs, FromUnsigned) {
  29   APInt zero = APInt::getZero(64);
  30   APInt maxInt = APInt::getSignedMaxValue(64);
  31   APInt minInt = APInt::getSignedMinValue(64);
  32   APInt minIntPlusOne = minInt + 1;
  33
  34   ConstantIntRanges canPortToSigned =
  35       ConstantIntRanges::fromUnsigned(zero, maxInt);
  36   EXPECT_EQ(canPortToSigned.smin(), zero);
  37   EXPECT_EQ(canPortToSigned.smax(), maxInt);
  38
  39   ConstantIntRanges cantPortToSigned =
  40       ConstantIntRanges::fromUnsigned(zero, minInt);
  41   EXPECT_EQ(cantPortToSigned.smin(), minInt);
  42   EXPECT_EQ(cantPortToSigned.smax(), maxInt);
  43
  44   ConstantIntRanges signedNegative =
  45       ConstantIntRanges::fromUnsigned(minInt, minIntPlusOne);
  46   EXPECT_EQ(signedNegative.smin(), minInt);
  47   EXPECT_EQ(signedNegative.smax(), minIntPlusOne);
  48 }
  49
  50 TEST(IntRangeAttrs, FromSigned) {
  51   APInt zero = APInt::getZero(64);
  52   APInt one = zero + 1;
  53   APInt negOne = zero - 1;
  54   APInt intMax = APInt::getSignedMaxValue(64);
  55   APInt intMin = APInt::getSignedMinValue(64);
  56   APInt uintMax = APInt::getMaxValue(64);
  57
  58   ConstantIntRanges noUnsignedBound =
  59       ConstantIntRanges::fromSigned(negOne, one);
  60   EXPECT_EQ(noUnsignedBound.umin(), zero);
  61   EXPECT_EQ(noUnsignedBound.umax(), uintMax);
  62
  63   ConstantIntRanges positive = ConstantIntRanges::fromSigned(one, intMax);
  64   EXPECT_EQ(positive.umin(), one);
  65   EXPECT_EQ(positive.umax(), intMax);
  66
  67   ConstantIntRanges negative = ConstantIntRanges::fromSigned(intMin, negOne);
  68   EXPECT_EQ(negative.umin(), intMin);
  69   EXPECT_EQ(negative.umax(), negOne);
  70
  71   ConstantIntRanges preserved = ConstantIntRanges::fromSigned(zero, one);
  72   EXPECT_EQ(preserved.umin(), zero);
  73   EXPECT_EQ(preserved.umax(), one);
  74 }
  75
  76 TEST(IntRangeAttrs, Join) {
  77   APInt zero = APInt::getZero(64);
  78   APInt one = zero + 1;
  79   APInt two = zero + 2;
  80   APInt intMin = APInt::getSignedMinValue(64);
  81   APInt intMax = APInt::getSignedMaxValue(64);
  82   APInt uintMax = APInt::getMaxValue(64);
  83
  84   ConstantIntRanges maximal(zero, uintMax, intMin, intMax);
  85   ConstantIntRanges zeroOne(zero, one, zero, one);
  86
  87   EXPECT_EQ(zeroOne.rangeUnion(maximal), maximal);
  88   EXPECT_EQ(maximal.rangeUnion(zeroOne), maximal);
  89
  90   EXPECT_EQ(zeroOne.rangeUnion(zeroOne), zeroOne);
  91
  92   ConstantIntRanges oneTwo(one, two, one, two);
  93   ConstantIntRanges zeroTwo(zero, two, zero, two);
  94   EXPECT_EQ(zeroOne.rangeUnion(oneTwo), zeroTwo);
  95
  96   ConstantIntRanges zeroOneUnsignedOnly(zero, one, intMin, intMax);
  97   ConstantIntRanges zeroOneSignedOnly(zero, uintMax, zero, one);
  98   EXPECT_EQ(zeroOneUnsignedOnly.rangeUnion(zeroOneSignedOnly), maximal);
  99 }