toString refactor in druntime

Steven Schveighoffer via Digitalmars-d digitalmars-d at puremagic.com
Mon Nov 3 06:52:57 PST 2014


On 10/31/14 4:50 PM, Jonathan Marler wrote:

> I wrote a Windows CE app to run on our printers here at HP to test what
> the Microsoft ARM compiler does with virtual function calls.  I had to
> do an operation with a global volatile variable to prevent the compiler
> from inlining the non-virtual function call but I finally got it to work.
>
> Calling the function 100 million times yielded the following times:
>
> Windows Compiler on ARM (Release)
> -------------------------------------------
> NonVirtual: 0.537000 seconds
> Virtual   : 1.281000 seconds
>
> Windows Compiler on x86 (Release)
> -------------------------------------------
> NonVirtual: 0.226000 seconds
> Virtual   : 0.226000 seconds
>
> Windows Compiler on x86 (Debug)
> -------------------------------------------
> NonVirtual: 2.940000 seconds
> Virtual   : 3.204000 seconds
>
>
> Here's the link to the code:
>
> http://marler.info/virtualtest.c
>
>

Thanks, this is helpful.

-Steve


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