Attached is a patch that improves the performance of an Float/Double
compare by exploiting information carried in their bit integer/long
versions sign bit. It removes one comparison from the normal path, as
well as making other compares with ints/longs. When sorting an array of
floats this can
Andrew Pinski wrote:
On 6/30/07, Ian Rogers [EMAIL PROTECTED] wrote:
Attached is a patch that improves the performance of an Float/Double
compare by exploiting information carried in their bit integer/long
versions sign bit. It removes one comparison from the normal path, as
well as making
Baseline from: Mon Jun 25 16:25:44 UTC 2007
Regressions:
FAIL: java.awt.Component.properties
FAIL: java.awt.Graphics.TestPaintGraphics
FAIL: java.lang.Integer.parseInt
FAIL: javax.swing.JLabel.AccessibleJLabel.getIndexAtPoint
FAIL: javax.swing.JLabel.getActionMap
FAIL:
Makefile:12069: warning: ignoring old commands for target `multi-clean'
make create-headers
make[4]: Entering directory
`/home/cpdev/Nightly/gcc/build/i686-pc-linux-gnu/libjava'
Makefile:12089: warning: overriding commands for target `multi-do'
Makefile:12022: warning: ignoring old commands for
Makefile:12069: warning: ignoring old commands for target `multi-clean'
make create-headers
make[4]: Entering directory
`/home/cpdev/Nightly/gcc/build/i686-pc-linux-gnu/libjava'
Makefile:12089: warning: overriding commands for target `multi-do'
Makefile:12022: warning: ignoring old commands for
Makefile:12069: warning: ignoring old commands for target `multi-clean'
make create-headers
make[4]: Entering directory
`/home/cpdev/Nightly/gcc/build/i686-pc-linux-gnu/libjava'
Makefile:12089: warning: overriding commands for target `multi-do'
Makefile:12022: warning: ignoring old commands for
Hi!
Another NPE when building openjdk with GNU Classpath:
$ cat
/home/twisti/cacao/sun/openjdk/jdk/j2se/src/solaris/classes/sun/awt/X11/java-icon16.png
| /home/twisti/tmp/cacao/bin/java -client -Xmx896m -Xms128m -XX:PermSize=32m
-XX:MaxPermSize=160m -classpath
On Mon, 2007-06-25 at 00:09 +0200, Christian Thalinger wrote:
On Sun, 2007-06-24 at 23:57 +0200, Mark Wielaard wrote:
On Sun, 2007-06-24 at 14:12 +0200, Christian Thalinger wrote:
When building HotSpot in OpenJDK with CACAO I get this NPE:
/home/twisti/tmp/cacao/bin/java -classpath
Hi everyone,
I was tracking a bug and came across the code in Float.compare which is
very similar to Double.compare. It just so happened that the bug was
being caused by sorting arrays containing lots of floating point 0s.
This occurs quite frequently in the Jikes RVM when we have an array of
Ian Rogers wrote:
public static int compare(float x, float y)
{
if (isNaN(x))
return isNaN(y) ? 0 : 1;
if (isNaN(y))
return -1;
// recall that 0.0 == -0.0, so we convert to infinities and try again
if (x == 0 y == 0)
return (int) (1 / x - 1 / y);
if (x ==
In terms of performance I just tried sorting an array of floats with the
new code (floatAsIntBits should have been floatToIntBits, sorry). The
test was to initialize an array of floats backwards and then sort it to
be ascending. Running a large enough array and enough iterations to get
a ~4
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