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List: openjdk-hotspot-compiler-dev
Subject: Re: RFR(M): 8137168: Replace IfNode with a new RangeCheckNode for range checks
From: John Rose <john.r.rose () oracle ! com>
Date: 2015-09-30 0:42:56
Message-ID: BABED724-5CCC-4EE9-B2CB-881EA0C238F5 () oracle ! com
[Download RAW message or body]
On Sep 29, 2015, at 4:01 PM, Christian Thalinger <christian.thalinger@oracle.com> \
wrote:
>
>
> > On Sep 25, 2015, at 5:04 AM, Roland Westrelin <roland.westrelin@oracle.com \
> > <mailto:roland.westrelin@oracle.com>> wrote:
> > The idea of using a node specifically for range checks is from John.
>
> There should be a range-check bytecode :-)
Or, there should be ~25 bytecodes and bunch of intrinsic methods. ;-)
http://cr.openjdk.java.net/~jrose/pres/201508-JVMComplexity.pdf
[Attachment #3 (unknown)]
<html><head><meta http-equiv="Content-Type" content="text/html \
charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: \
space; -webkit-line-break: after-white-space;" class="">On Sep 29, 2015, at 4:01 PM, \
Christian Thalinger <<a href="mailto:christian.thalinger@oracle.com" \
class="">christian.thalinger@oracle.com</a>> wrote:<br class=""><div><blockquote \
type="cite" class=""><br class="Apple-interchange-newline"><div class=""><meta \
http-equiv="Content-Type" content="text/html charset=us-ascii" class=""><div \
style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: \
after-white-space;" class=""><br class=""><div class=""><blockquote type="cite" \
class=""><div class="">On Sep 25, 2015, at 5:04 AM, Roland Westrelin <<a \
href="mailto:roland.westrelin@oracle.com" \
class="">roland.westrelin@oracle.com</a>> wrote:</div><br \
class="Apple-interchange-newline"><div class=""><span style="font-family: Courier; \
font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; \
letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; \
text-indent: 0px; text-transform: none; white-space: normal; widows: auto; \
word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline \
!important;" class="">The idea of using a node specifically for range checks is from \
John.</span></div></blockquote></div><br class=""><div class="">There should be a \
range-check bytecode :-)</div></div></div></blockquote></div><br class=""><div \
class="">Or, there should be ~25 bytecodes and bunch of intrinsic methods. \
;-)</div><div class=""><br class=""></div><div class=""><a \
href="http://cr.openjdk.java.net/~jrose/pres/201508-JVMComplexity.pdf" \
class="">http://cr.openjdk.java.net/~jrose/pres/201508-JVMComplexity.pdf</a></div></body></html>
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