A simple optimization proposal (original) (raw)

John Rose john.r.rose at oracle.com
Wed Feb 12 21:47:58 PST 2014

One point behind the bug report is to give a little reward to Java coders who write dominating tests that exclude a.length==0, as:

if (a.length == 0) goAway(); else return a[i & a.length-1];

Kris, can your patch do this? The logic in IfNode can probably elide the duplicate dominating test, if the right normalizations occur. ��

– John

On Feb 12, 2014, at 6:05 PM, Martin Grajcar <maaartinus at gmail.com> wrote:

That's what I've meant with goAway. My point was the jump using already computed flags -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/attachments/20140212/da94ecb2/attachment-0001.html

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