Request for review (XS): 7132180: JSR 292: C1 JVM crash with ClassValue/MethodHandle

[Tom Rodriguez]

Looks good.

tom

On Jan 30, 2012, at 2:29 AM, Christian Thalinger wrote:

> http://cr.openjdk.java.net/~twisti/7132180/
> 
> 7132180: JSR 292: C1 JVM crash with ClassValue/MethodHandle
> Reviewed-by:
> 
> The logic for detecting the selectAlternative idiom in
> GraphBuilder::for_method_handle_inline assumes that both inputs of the
> phi node are constant.  This might now be the case.
> 
> The fix is to check for is_constant on the ObjectType of both inputs.
> 
> Tested with failing test.
> 
> src/share/vm/c1/c1_GraphBuilder.cpp
>