PGO: simple generic method is not inlined

[EgorBo]

for (int i = 0; i < 100; i++)
{
    Test(new ObjImpl<string>());
    Thread.Sleep(16);
}

[MethodImpl(MethodImplOptions.NoInlining)]
static object Test(IObj o) => o.GetObj();


public interface IObj
{
    object GetObj();
}

public class ObjImpl<T> : IObj
{
    public object GetObj() => typeof(T);
}

Codegen for Test in Tier1:

; Assembly listing for method Program:<<Main>$>g__Test|0_0(IObj):System.Object (Tier1)
       sub      rsp, 40
       mov      rax, 0xD1FFAB1E  ; ObjImpl`1[System.String]
       cmp      qword ptr [rcx], rax
       jne      SHORT G_M33634_IG06
       call     [ObjImpl`1[System.__Canon]:GetObj():System.Object:this]
G_M33634_IG04:
       nop      
       add      rsp, 40
       ret      
G_M33634_IG06:
       mov      r11, 0xD1FFAB1E      ; code for IObj:GetObj():System.Object:this
       call     [r11]IObj:GetObj():System.Object:this
       jmp      SHORT G_M33634_IG04
; Total bytes of code 46,

GDV is applied but the method is not inlined, presumably, the root cause is the same as in #87597 - generic context from the GDV candidate is not kept (but I am not sure, decided to file since I noticed a similiar pattern in real code)

[ghost]

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Issue Details

---

for (int i = 0; i < 100; i++)
{
    Test(new ObjImpl<string>());
    Thread.Sleep(16);
}

[MethodImpl(MethodImplOptions.NoInlining)]
static object Test(IObj o) => o.GetObj();


public interface IObj
{
    object GetObj();
}

public class ObjImpl<T> : IObj
{
    public object GetObj() => typeof(T);
}

Codegen for Test in Tier1:

; Assembly listing for method Program:<<Main>$>g__Test|0_0(IObj):System.Object (Tier1)
       sub      rsp, 40
       mov      rax, 0xD1FFAB1E  ; ObjImpl`1[System.String]
       cmp      qword ptr [rcx], rax
       jne      SHORT G_M33634_IG06
       call     [ObjImpl`1[System.__Canon]:GetObj():System.Object:this]
G_M33634_IG04:
       nop      
       add      rsp, 40
       ret      
G_M33634_IG06:
       mov      r11, 0xD1FFAB1E      ; code for IObj:GetObj():System.Object:this
       call     [r11]IObj:GetObj():System.Object:this
       jmp      SHORT G_M33634_IG04
; Total bytes of code 46,

GDV is applied but the method is not inlined, presumably, the root cause is the same as in #87597 - generic context from the GDV candidate is not kept.

Author:	EgorBo
Assignees:	-
Labels:	area-CodeGen-coreclr
Milestone:	-

[EgorBo]

Just checked, this issue will be closed by #87847
codegen diff (Main vs that PR): https://www.diffchecker.com/iyxpsemY/ (method is inlined now)
cc @davidwrighton @AndyAyersMS