View source for IRIS Development Option

IDO, also known by its backend name of uopt, is an IRIX-based compiler used on IRIX versions prior to 6.5 and compiler versions prior to 7.2. However it is unknown when the compiler backend switched from uopt to [[MIPSPro]] truly. Estimation is around version 7.3. 

IDO was famously a default compiler for many Nintendo 64 consoles and includes support for the MIPS R4300i CPU and its eccentricities. MIPSPro 7.3 and 7.4 exclude these options. 

==== Known IDO versions ====
IDO has the following known versions:

* IRIS Development Option 4.0
* IRIS Development Option 4.1.x
* Trusted IRIS Development Option 4.0.5
* IRIS Development Option 5.0
* IRIS Development Option 5.1
* IRIS Development Option 5.3
* IRIS Development Option 6.0
* IRIS Development Option 6.1
* IRIS Development Option 7.1
* IRIS Development Option 7.1.1

==== ABI Support ====
Later versions intended for IRIX 6.x include support for n64 ABI and potentially some support for n32 ABIs. All prior versions are purely o32.

[[Category:Compilers]]
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