RFR(S) [backport 11]: 8209511: C2 asserts with UseSSE < 4 and AVX enabled: "Label was never bound to a location, but it was used as a jmp target

[Aleksey Shipilev]

On 12/11/18 6:20 PM, Hohensee, Paul wrote:
> Webrev: http://cr.openjdk.java.net/~phh/8206075.8208480.8209511/webrev.00/
> 
> The patches apply cleanly, but the one for 8209511 needs a machine with AVX enabled to test it,
> which I don’t have. Would someone (perhaps Tobias, who fixed it? :)) please apply the patch and
> run “java -XX:UseSSE=3 -version” to verify that there’s no crash?
You sure -version is enough?

Passes on my i7-7820X with each of these:

 -XX:UseSSE=0
 -XX:UseSSE=1
 -XX:UseSSE=2
 -XX:UseSSE=3
 -XX:UseSSE=4 (last supported)
 -XX:UseAVX=0
 -XX:UseAVX=1
 -XX:UseAVX=2
 -XX:UseAVX=3 (last supported)

-Aleksey