[10] RFR(XS) 8185013: Disable subword vector analysis optimization until 8184995 is fixed

[Daniel D. Daugherty]

Thumbs up!

Dan


On 7/20/17 4:44 PM, Vladimir Kozlov wrote:
> https://bugs.openjdk.java.net/browse/JDK-8185013
>
> Switch UseSubwordForMaxVector flag off by default.
>
> src/share/vm/opto/c2_globals.hpp
> @@ -192,7 +192,7 @@
>            "of rounds of unroll,optimize,..")                          \
>            range(0, max_jint)                                          \
>                                                                        \
> -  product(bool, UseSubwordForMaxVector, true,                         \
> +  product(bool, UseSubwordForMaxVector, false,                        \
>            "Use Subword Analysis to set maximum vector size")          \
>                                                                        \
>    develop(intx, UnrollLimitForProfileCheck, 1,                        \
>
> Thanks,
> Vladimir