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JIT: fix checked subtraction loop unrolling #133646
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119 changes: 119 additions & 0 deletions
119
src/tests/JIT/Regression/JitBlue/Runtime_133583/Runtime_133583.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
|
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| using System; | ||
| using System.Runtime.CompilerServices; | ||
| using Xunit; | ||
|
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| public class Runtime_133583 | ||
| { | ||
| [Fact] | ||
| public static void TestEntryPoint() | ||
| { | ||
| Assert.Equal(2, NotEqual()); | ||
| Assert.Equal(2, LessThan()); | ||
| Assert.Equal(3, LessThanOrEqual()); | ||
| Assert.Equal(2, GreaterThan()); | ||
| Assert.Equal(3, GreaterThanOrEqual()); | ||
| Assert.Equal(1, SubtractIntMinValue()); | ||
| Assert.Throws<OverflowException>(() => { _ = NotEqualOverflow(); }); | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int NotEqual() | ||
| { | ||
| int count = 0; | ||
| int i = 0; | ||
| while (i != 2) | ||
| { | ||
| count++; | ||
| i = checked(i - (-1)); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int LessThan() | ||
| { | ||
| int count = 0; | ||
| int i = -2; | ||
| while (i < 0) | ||
| { | ||
| count++; | ||
| i = checked(i - (-1)); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int LessThanOrEqual() | ||
| { | ||
| int count = 0; | ||
| int i = -2; | ||
| while (i <= 0) | ||
| { | ||
| count++; | ||
| i = checked(i - (-1)); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int GreaterThan() | ||
| { | ||
| int count = 0; | ||
| int i = 2; | ||
| while (i > 0) | ||
| { | ||
| count++; | ||
| i = checked(i - 1); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int GreaterThanOrEqual() | ||
| { | ||
| int count = 0; | ||
| int i = 2; | ||
| while (i >= 0) | ||
| { | ||
| count++; | ||
| i = checked(i - 1); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int SubtractIntMinValue() | ||
| { | ||
| int count = 0; | ||
| int i = int.MinValue; | ||
| while (i != 0) | ||
| { | ||
| count++; | ||
| i = checked(i - int.MinValue); | ||
| } | ||
|
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| return count; | ||
| } | ||
|
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| [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)] | ||
| private static int NotEqualOverflow() | ||
| { | ||
| int count = 0; | ||
| int i = int.MaxValue - 1; | ||
| while (i != int.MaxValue - 2) | ||
| { | ||
| count++; | ||
| i = checked(i - (-1)); | ||
| } | ||
|
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| return count; | ||
| } | ||
| } |
12 changes: 12 additions & 0 deletions
12
src/tests/JIT/Regression/JitBlue/Runtime_133583/Runtime_133583.csproj
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <Optimize>True</Optimize> | ||
| <CLRTestPriority>1</CLRTestPriority> | ||
| <RequiresProcessIsolation>true</RequiresProcessIsolation> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Compile Include="$(MSBuildProjectName).cs" /> | ||
|
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| <CLRTestEnvironmentVariable Include="DOTNET_TieredCompilation" Value="0" /> | ||
| </ItemGroup> | ||
| </Project> |
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