we replace one or more instructions with others that perform
better for the given architecture or CPU.
+* 64 bit support tips, by Zoltan Varga (vargaz@gmail.com)
+
+ For a 64-bit port of the Mono runtime, you will typically do
+ the following:
+
+ * need to use inssel-long.brg instead of
+ inssel-long32.brg.
+
+ * need to implement lots of new opcodes:
+ OP_I<OP> is 32 bit op
+ OP_L<OP> and CEE_<OP> are 64 bit ops
+
+
+ The 64 bit version of an existing port might share the code
+ with the 32 bit port (for example SPARC/SPARV9), or it might
+ be separate (x86/AMD64).
+
+ That will depend on the similarities of the two instructions
+ sets/ABIs etc.
+
+ The runtime and most parts of the JIT are 64 bit clean
+ at this point, so the only parts which require changing are
+ the arch dependent files.
+
+
+
+
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