[LLVMdev] JIT + tail cals

[Chris Lattner]

On Thu, 19 May 2005, Jeff Cohen wrote:
> VC++ builds are working again.
> However, llvm-test is broken.  The configured makefile is bad:

Fixed.  Thanks Jeff,

-Chris

> Jeff Cohen wrote:
>
>> Chris Lattner wrote:
>> 
>>> On Wed, 18 May 2005, Chris Lattner wrote:
>>> 
>>>> Yup, something like this should work.  Two comments though:
>>>> 2. I haven't done much testing with the JIT and tail calls.  I wouldn't 
>>>> be
>>>>   suprised if there are minor issues that need to be fixed.  I will try
>>>>   to take a look and see what remains to be done over the next couple of
>>>>   days.
>>> 
>>> 
>>> 
>>> As I expected, there were issues.  I fixed the following two problems:
>>> 
>>> 1. The JIT didn't know where a call came from when it was a tail call (jmp
>>>    doesn't push a return address).
>>> 2. The JIT was clobbering EAX/EDX when lazily compiling a function, and
>>>    X86 fastcc wants to pass values in those registers.
>>> 
>>> I think things are working now, give it a spin and lemme know if you hit 
>>> any problems.
>>> 
>>> -Chris
>>> 
>> VC++ build is broken as a result of this change.  I'll get it fixed soon.
>> 
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>
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-Chris

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