RFR (XS) 8199511: Do not generate g1_{pre|post}_barrier_slow_id without CardTable-enabled barrier set

[Roman Kennke]

Am 13.03.2018 um 12:05 schrieb Aleksey Shipilev:
> g1_{pre|post}_barrier_slow_id generation reaches for card table address, but it might not be
> available if barrier set does not support it. Reliably asserts with Epsilon.
> 
> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8199511
> 
> Fix:
>   http://cr.openjdk.java.net/~shade/8199511/webrev.01/
> 
> This is arch-specific fix:
>   - c1_Runtime1_aarch64: copy-pasted the check block from g1_pre_barrier_slow_id
>   - c1_Runtime1_arm:     added check block for *both* g1_{pre|post}_slow_id
>   - c1_Runtime1_ppc:     already implemented
>   - c1_Runtime1_s390:    already implemented
>   - c1_Runtime1_sparc:   already implemented
>   - c1_Runtime1_x86:     copy-pasted the check block from g1_pre_barrier_slow_id
> 
> Testing: x86_64 build, Epsilon tests, (running with submit-hs repo now)
> 
> Thanks,
> -Aleksey
> 

I just stumbled over the same thing.

Patch looks good to me!

Thanks, Roman