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// Licensed to the .NET Foundation under one or more agreements. | ||
// The .NET Foundation licenses this file to you under the MIT license. | ||
// See the LICENSE file in the project root for more information. | ||
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using System; | ||
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public sealed class X: IComparable<X> | ||
{ | ||
int ival; | ||
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public X(int i) | ||
{ | ||
ival = i; | ||
} | ||
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public int CompareTo(X x) | ||
{ | ||
return ival - x.ival; | ||
} | ||
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||
public bool Equals(X x) | ||
{ | ||
return ival == x.ival; | ||
} | ||
} | ||
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public class Y<T> where T : IComparable<T> | ||
{ | ||
public static int C(T x, T y) | ||
{ | ||
// IL here is | ||
// ldarga 0 | ||
// ldarg 1 | ||
// constrained ... callvirt ... | ||
// | ||
// The ldarga blocks both caller-arg direct sub and type | ||
// propagation since the jit thinks arg0 might be redefined. | ||
// | ||
// For ref types the ldarga is undone in codegen just before | ||
// the call so we end up with *(&arg0) and we know this is | ||
// arg0. Ideally we'd also understand that this pattern can't | ||
// lead to reassignment, but our view of the callee and what | ||
// it does with address-taken args is quite limited. | ||
// | ||
// Even if we can't propagate the caller's value or type, we | ||
// might be able to retype the generic __Canon for arg0 as the | ||
// more specific type that the caller is using (here, X). | ||
// | ||
// An interesting variant on this would be to derive from X | ||
// (say with XD) and have the caller pass instances of XD | ||
// instead of instances of X. We'd need to make sure we retype | ||
// arg0 as X and not XD. | ||
return x.CompareTo(y); | ||
} | ||
} | ||
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public class Z | ||
{ | ||
public static int Main() | ||
{ | ||
// Ideally inlining Y.C would enable the interface call in Y | ||
// to be devirtualized, since we know the exact type of the | ||
// first argument. We can't get this yet. | ||
int result = Y<X>.C(new X(103), new X(3)); | ||
return result; | ||
} | ||
} |
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<?xml version="1.0" encoding="utf-8"?> | ||
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" /> | ||
<PropertyGroup> | ||
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
<AssemblyName>$(MSBuildProjectName)</AssemblyName> | ||
<SchemaVersion>2.0</SchemaVersion> | ||
<ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid> | ||
<OutputType>Exe</OutputType> | ||
<AppDesignerFolder>Properties</AppDesignerFolder> | ||
<FileAlignment>512</FileAlignment> | ||
<ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> | ||
<ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT .0\UITestExtensionPackages</ReferencePath> | ||
<SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir> | ||
<NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp> | ||
</PropertyGroup> | ||
<!-- Default configurations to help VS understand the configurations --> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
</PropertyGroup> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies"> | ||
<Visible>False</Visible> | ||
</CodeAnalysisDependentAssemblyPaths> | ||
</ItemGroup> | ||
<PropertyGroup> | ||
<DebugType>PdbOnly</DebugType> | ||
<Optimize>True</Optimize> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<Compile Include="comparable.cs" /> | ||
</ItemGroup> | ||
<ItemGroup> | ||
<Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" /> | ||
</ItemGroup> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" /> | ||
<PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "> | ||
</PropertyGroup> | ||
</Project> |
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// Licensed to the .NET Foundation under one or more agreements. | ||
// The .NET Foundation licenses this file to you under the MIT license. | ||
// See the LICENSE file in the project root for more information. | ||
|
||
using System; | ||
|
||
interface I<out T> | ||
{ | ||
T A(); | ||
} | ||
|
||
class X<T> : I<T> where T: class | ||
{ | ||
T I<T>.A() | ||
{ | ||
return (T)(object)"X"; | ||
} | ||
} | ||
|
||
class T | ||
{ | ||
static object F(I<object> i) | ||
{ | ||
return i.A(); | ||
} | ||
|
||
public static int Main() | ||
{ | ||
// Jit should inline F and then devirtualize the call to A. | ||
// (inlining A blocked by runtime lookup) | ||
object j = F(new X<string>()); | ||
if (j is string) | ||
{ | ||
return ((string)j)[0] + 12; | ||
} | ||
return -1; | ||
} | ||
} |
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@@ -0,0 +1,41 @@ | ||
<?xml version="1.0" encoding="utf-8"?> | ||
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" /> | ||
<PropertyGroup> | ||
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
<AssemblyName>$(MSBuildProjectName)</AssemblyName> | ||
<SchemaVersion>2.0</SchemaVersion> | ||
<ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid> | ||
<OutputType>Exe</OutputType> | ||
<AppDesignerFolder>Properties</AppDesignerFolder> | ||
<FileAlignment>512</FileAlignment> | ||
<ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> | ||
<ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT .0\UITestExtensionPackages</ReferencePath> | ||
<SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir> | ||
<NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp> | ||
</PropertyGroup> | ||
<!-- Default configurations to help VS understand the configurations --> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
</PropertyGroup> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies"> | ||
<Visible>False</Visible> | ||
</CodeAnalysisDependentAssemblyPaths> | ||
</ItemGroup> | ||
<PropertyGroup> | ||
<DebugType>PdbOnly</DebugType> | ||
<Optimize>True</Optimize> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<Compile Include="contravariance.cs" /> | ||
</ItemGroup> | ||
<ItemGroup> | ||
<Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" /> | ||
</ItemGroup> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" /> | ||
<PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "> | ||
</PropertyGroup> | ||
</Project> |
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@@ -0,0 +1,35 @@ | ||
// Licensed to the .NET Foundation under one or more agreements. | ||
// The .NET Foundation licenses this file to you under the MIT license. | ||
// See the LICENSE file in the project root for more information. | ||
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||
using System; | ||
|
||
interface I<in T> | ||
{ | ||
int A(T t); | ||
} | ||
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||
class X<T> : I<T> | ||
{ | ||
int c = 0; | ||
int I<T>.A(T t) | ||
{ | ||
return ++c; | ||
} | ||
} | ||
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||
class T | ||
{ | ||
static int F(I<string> i) | ||
{ | ||
return i.A("A"); | ||
} | ||
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||
public static int Main() | ||
{ | ||
// Jit should inline F and then devirtualize | ||
// and inline the call to A. | ||
int j = F(new X<object>()); | ||
return j + 99; | ||
} | ||
} |
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---|---|---|
@@ -0,0 +1,41 @@ | ||
<?xml version="1.0" encoding="utf-8"?> | ||
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" /> | ||
<PropertyGroup> | ||
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
<AssemblyName>$(MSBuildProjectName)</AssemblyName> | ||
<SchemaVersion>2.0</SchemaVersion> | ||
<ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid> | ||
<OutputType>Exe</OutputType> | ||
<AppDesignerFolder>Properties</AppDesignerFolder> | ||
<FileAlignment>512</FileAlignment> | ||
<ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> | ||
<ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT .0\UITestExtensionPackages</ReferencePath> | ||
<SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir> | ||
<NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp> | ||
</PropertyGroup> | ||
<!-- Default configurations to help VS understand the configurations --> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
</PropertyGroup> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies"> | ||
<Visible>False</Visible> | ||
</CodeAnalysisDependentAssemblyPaths> | ||
</ItemGroup> | ||
<PropertyGroup> | ||
<DebugType>PdbOnly</DebugType> | ||
<Optimize>True</Optimize> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<Compile Include="covariance.cs" /> | ||
</ItemGroup> | ||
<ItemGroup> | ||
<Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" /> | ||
</ItemGroup> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" /> | ||
<PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "> | ||
</PropertyGroup> | ||
</Project> |
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@@ -0,0 +1,48 @@ | ||
// Licensed to the .NET Foundation under one or more agreements. | ||
// The .NET Foundation licenses this file to you under the MIT license. | ||
// See the LICENSE file in the project root for more information. | ||
|
||
using System; | ||
|
||
interface Ix<T> where T : class | ||
{ | ||
T F(); | ||
} | ||
|
||
class Base : Ix<string> | ||
{ | ||
public virtual string F() { return "B"; } | ||
} | ||
|
||
class Derived : Base | ||
{ | ||
public override string F() { return "D"; } | ||
} | ||
|
||
class Bx | ||
{ | ||
public Ix<string> Get() { return new Derived(); } | ||
} | ||
|
||
public class Z | ||
{ | ||
static string X(Base b) | ||
{ | ||
return b.F(); | ||
} | ||
|
||
public static int Main() | ||
{ | ||
// Would like to be able to late devirtualize the call to F | ||
// here after inlining Get exposes the exact type of the | ||
// object, but since the return type of Get is a (shared) | ||
// interface type, we need the exact context for F to do so | ||
// safely. | ||
// | ||
// Unfortunately we lose track of that context, because when | ||
// we import the call to F, it is not an inline candidate. | ||
string s = new Bx().Get().F(); | ||
return (int) s[0] + 32; | ||
} | ||
} | ||
|
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@@ -0,0 +1,41 @@ | ||
<?xml version="1.0" encoding="utf-8"?> | ||
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" /> | ||
<PropertyGroup> | ||
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
<AssemblyName>$(MSBuildProjectName)</AssemblyName> | ||
<SchemaVersion>2.0</SchemaVersion> | ||
<ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid> | ||
<OutputType>Exe</OutputType> | ||
<AppDesignerFolder>Properties</AppDesignerFolder> | ||
<FileAlignment>512</FileAlignment> | ||
<ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> | ||
<ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT .0\UITestExtensionPackages</ReferencePath> | ||
<SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir> | ||
<NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp> | ||
</PropertyGroup> | ||
<!-- Default configurations to help VS understand the configurations --> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
</PropertyGroup> | ||
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies"> | ||
<Visible>False</Visible> | ||
</CodeAnalysisDependentAssemblyPaths> | ||
</ItemGroup> | ||
<PropertyGroup> | ||
<DebugType>PdbOnly</DebugType> | ||
<Optimize>True</Optimize> | ||
</PropertyGroup> | ||
<ItemGroup> | ||
<Compile Include="late.cs" /> | ||
</ItemGroup> | ||
<ItemGroup> | ||
<Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" /> | ||
</ItemGroup> | ||
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" /> | ||
<PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "> | ||
</PropertyGroup> | ||
</Project> |
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