[Mono-bugs] [Bug 524595] JIT produces very slow code if you use a temporary variable outside a try/catch block

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Jul 28 23:37:13 EDT 2009


User miguel at novell.com added comment

Miguel de Icaza <miguel at novell.com> changed:

           What    |Removed                     |Added
                 CC|                            |miguel at novell.com

--- Comment #6 from Miguel de Icaza <miguel at novell.com>  2009-07-28 21:37:10 MDT ---
We agree that the JIT code generation could improve.

In your second sample, you could try:

mono -O=all test.exe

On my system (x86-64):
miguel at homelinux:~/downloads> mono -O=all test.exe 
Fast: 00:00:00.1231450
Slow: 00:00:00.1188620

The "checked" does introduce additional pressure that the JIT is unable to get
rid of.

On Java, how did you implement the "checked" support?

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