Methods are not getting inlined #11087
Description
Why DecimalExtensions:Round is not getting inlined? I followed instructions here https://github.com/dotnet/coreclr/blob/master/Documentation/building/viewing-jit-dumps.md to get the jit dump. I published the program in release. As you can see it still calls DecimalExtensions:Round instead of calling Decimal:Round directly.
using System;
using System.Runtime.CompilerServices;
public static class DecimalExtensions
{
[MethodImpl(MethodImplOptions.AggressiveInlining)] // doesn't help
public static decimal Round(this decimal @this)
{
return decimal.Round(@this);
}
}
public static class Program
{
public static void Main()
{
Console.WriteLine(1.2134m.Round());
Console.WriteLine(decimal.Round(1.2134m));
}
}The dump:
G_M20519_IG01: ; func=00, offs=000000H, size=0013H, gcrefRegs=00000000 {}, byrefRegs=00000000 {}, byref, nogc <-- Prolog IG
IN002e: 000000 push rbp
IN002f: 000001 sub rsp, 192
IN0030: 000008 vzeroupper
IN0031: 00000B lea rbp, [rsp+C0H]
G_M20519_IG02: ; offs=000013H, size=00D3H, gcrefRegs=00000000 {}, byrefRegs=00000000 {}, byref
IN0001: 000013 lea rcx, bword ptr [V01 rbp-10H]
IN0002: 000017 vxorps xmm0, xmm0
IN0003: 00001C vmovdqu qword ptr [rcx], xmm0
IN0004: 000021 xor ecx, ecx
IN0005: 000023 mov dword ptr [V00+0x20 rsp+20H], ecx
IN0006: 000027 mov dword ptr [V00+0x28 rsp+28H], 4
IN0007: 00002F lea rcx, bword ptr [V01 rbp-10H]
IN0008: 000033 mov edx, 0x2F66
IN0009: 000038 xor r8d, r8d
IN000a: 00003B xor r9d, r9d
IN000b: 00003E call Decimal:.ctor(int,int,int,bool,ubyte):this
IN000c: 000043 lea rcx, bword ptr [V02 rbp-20H]
IN000d: 000047 mov qword ptr [V06 rbp-58H], rcx
IN000e: 00004B vmovdqu xmm0, qword ptr [V01 rbp-10H]
IN000f: 000051 vmovdqu qword ptr [V05 rbp-50H], xmm0
IN0010: 000057 mov rcx, qword ptr [V06 rbp-58H]
IN0011: 00005B lea rdx, bword ptr [V05 rbp-50H]
IN0012: 00005F call DecimalExtensions:Round(struct):struct
IN0013: 000064 vmovdqu xmm0, qword ptr [V02 rbp-20H]
IN0014: 00006A vmovdqu qword ptr [V07 rbp-68H], xmm0
IN0015: 000070 lea rcx, bword ptr [V07 rbp-68H]
IN0016: 000074 call Console:WriteLine(struct)
IN0017: 000079 lea rcx, bword ptr [V03 rbp-30H]
IN0018: 00007D vxorps xmm0, xmm0
IN0019: 000082 vmovdqu qword ptr [rcx], xmm0
IN001a: 000087 xor ecx, ecx
IN001b: 000089 mov dword ptr [V00+0x20 rsp+20H], ecx
IN001c: 00008D mov dword ptr [V00+0x28 rsp+28H], 4
IN001d: 000095 lea rcx, bword ptr [V03 rbp-30H]
IN001e: 000099 mov edx, 0x2F66
IN001f: 00009E xor r8d, r8d
IN0020: 0000A1 xor r9d, r9d
IN0021: 0000A4 call Decimal:.ctor(int,int,int,bool,ubyte):this
IN0022: 0000A9 lea rcx, bword ptr [V04 rbp-40H]
IN0023: 0000AD mov qword ptr [V09 rbp-80H], rcx
IN0024: 0000B1 vmovdqu xmm0, qword ptr [V03 rbp-30H]
IN0025: 0000B7 vmovdqu qword ptr [V08 rbp-78H], xmm0
IN0026: 0000BD mov rcx, qword ptr [V09 rbp-80H]
IN0027: 0000C1 lea rdx, bword ptr [V08 rbp-78H]
IN0028: 0000C5 call Decimal:Round(struct):struct
IN0029: 0000CA vmovdqu xmm0, qword ptr [V04 rbp-40H]
IN002a: 0000D0 vmovdqu qword ptr [V10 rbp-90H], xmm0
IN002b: 0000D9 lea rcx, bword ptr [V10 rbp-90H]
IN002c: 0000E0 call Console:WriteLine(struct)
IN002d: 0000E5 nop
G_M20519_IG03: ; offs=0000E6H, size=0006H, epilog, nogc, emitadd
IN0032: 0000E6 lea rsp, [rbp]
IN0033: 0000EA pop rbp
IN0034: 0000EB ret