[Mono-bugs] [Bug 69182][Wis] Changed - Use only one trampoline for jitting virtual functions
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Wed, 10 Nov 2004 10:19:15 -0500 (EST)
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Changed by lupus@ximian.com.
http://bugzilla.ximian.com/show_bug.cgi?id=69182
--- shadow/69182 2004-11-06 12:13:23.000000000 -0500
+++ shadow/69182.tmp.9262 2004-11-10 10:19:15.000000000 -0500
@@ -1,14 +1,14 @@
Bug#: 69182
Product: Mono: Runtime
Version: 1.1
-OS:
+OS: unknown
OS Details:
-Status: NEW
-Resolution:
-Severity:
+Status: RESOLVED
+Resolution: WONTFIX
+Severity: Unknown
Priority: Wishlist
Component: misc
AssignedTo: mono-bugs@ximian.com
ReportedBy: bmaurer@users.sf.net
QAContact: mono-bugs@ximian.com
TargetMilestone: ---
@@ -28,6 +28,13 @@
In the trampoline, we can take eax, which will hold the MonoVTable for the
class. Then, we can decode method_offset. From there, we will know what
MonoMethod* we want to compile. Thus, the trampoline is not specific to the
virtual call.
Jikes uses this technique, and probably other runtimes do as well.
+
+------- Additional Comments From lupus@ximian.com 2004-11-10 10:19 -------
+This makes it impossible to have a fast ldvirtftn which jikes doesn't
+need to support. It also requires the code to disassemble more
+of the instrictions which can't be safely done on x86 unless
+starting from the beginning of a method (think interface calls,
+aot-generated code etc).