You rock! That was the bit I was missing. I did make sure to look at the x86 under the "Release" configuration where C# compiler optimizations were enabled but I didn't even know about that debugging flag. Cool I love it when I learn something new.
Thanks -- Keith > -----Original Message----- > From: Fernando Tubio [mailto:[EMAIL PROTECTED] > Sent: Monday, October 30, 2006 11:21 AM > Subject: Re: Simple Property Getter Not Inlined > > How are you getting the disassembly? Visual Studio has an option to > suppress > optimization when debugging managed code. Make sure that "Tools / Options > / > Debugging / Suppress JIT optimization on module load" is not enabled. I > tried your code, and in fact I had to modify it to return the sum, > otherwise > the Go method was optimized away, but this is what I see when I disable > 'Suppress JIT optimization': > > // int i1 = _field1; > 00000000 push esi > 00000001 mov esi,dword ptr [ecx+4] > > // int i2 = this.Property; > 00000004 mov edx,dword ptr [ecx+8] > > // return i1 + i2; > 00000007 add esi,edx > 00000009 mov eax, esi > 0000000c ret > > Fernando Tubio > > ----- Original Message ----- > From: "Keith Hill" <[EMAIL PROTECTED]> > To: <ADVANCED-DOTNET@DISCUSS.DEVELOP.COM> > Sent: Monday, October 30, 2006 2:06 PM > Subject: [ADVANCED-DOTNET] Simple Property Getter Not Inlined > > > I thought that property getters in optimized bits would get inlined > in .NET > but looking at 2.0 bits would indicate that they don't. For example, > given > this source: > > class App > { > private int _field1 = 7; > private int _field2 = 14; > > static void Main() > { > new App().Go(); > } > > public void Go() > { > int i1 = _field1; > int i2 = this.Property; > int sum = i1 + i2; > } > > public int Property > { > get { return _field2; } > } > } > > The JIT'er generates the following x86 code: > > 00000000 push edi > 00000001 push esi > 00000002 push ebx > 00000003 push ebp > 00000004 mov esi,ecx > 00000006 cmp dword ptr ds:[00928884h],0 > 0000000d je 00000014 > 0000000f call 78FB10C6 > 00000014 xor ebx,ebx > 00000016 xor ebp,ebp > 00000018 mov eax,dword ptr [esi+4] <<-- direct access to > _field1 > 0000001b mov ebx,eax > 0000001d mov ecx,esi > 0000001f call dword ptr ds:[00929290h] <<-- calls this.Property > getter > 00000025 mov edi,eax > 00000027 mov ebp,edi > 00000029 nop > 0000002a pop ebp > 0000002b pop ebx > 0000002c pop esi > 0000002d pop edi > 0000002e ret > > Did I just dream that I heard that simple property getters would get > inlined > by the JIT'er to be as fast as a direct field access? > > -- > Keith Hill > Windows PowerShell MVP > > =================================== > This list is hosted by DevelopMentor(r) http://www.develop.com > > View archives and manage your subscription(s) at > http://discuss.develop.com > > =================================== > This list is hosted by DevelopMentor(r) http://www.develop.com > > View archives and manage your subscription(s) at > http://discuss.develop.com =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
