RFR(S): 8027480 - Build Windows x64 fastdebug builds using /homeparams

[Lois Foltan]

Hi Christian,
This looks good!
Lois

On 8/19/2014 7:39 PM, Christian Tornqvist wrote:
> Hi everyone,
>
>   
>
> This change adds /homeparams
> (http://msdn.microsoft.com/en-us/library/6exwh0y6.aspx) to compiler flags
> when building fastdebug on Windows x64. This causes the compiler to generate
> code to spill the first 4 arguments to the stack (they're normally only
> passed in registers), which should make it easier to debug.
>
>   
>
> I also changed the ProjectCreator to enable building with this using Visual
> Studio. The size of jvm.dll increases with about 3% (about 504k increase).
>
>   
>
> Verified that it builds correctly using Visual Studio and JPRT, the
> generation of the spill code has been verified by comparing prologue code
> for several functions in the JVM with/without using /homeparams.
>
>   
>
> Webrev:
>
> http://cr.openjdk.java.net/~ctornqvi/webrev/8027480/webrev.00/
>
>   
>
> Bug:
>
> https://bugs.openjdk.java.net/browse/JDK-8027480
>
>   
>
> Thanks,
>
> Christian
>
>   
>