Re: [omr-dev] Calling functions recursively and via pointers

["Mark Stoodley" <mstoodle@xxxxxxxxxx>]

I would check out the Call and ComputedCall
services from JitBuilder. The basic idea is that there are indirect call
opcodes whose first child is expected to compute the entry point. You will
still need to cook up a ResolvedMethod structure corresponding to the final
target, even though it's a computed entry point.

For a recursive function call, you need
to reuse the ResolvedMethod for the function you're compiling and it *should*
just work (there are paths in the code generators to detect this case....it
all amazingly just worked out when I did the JitBuilder support for Calls).

Mark Stoodley		8200 Warden Avenue
Senior Software Developer		Markham, L6G 1C7
IBM Runtime Technologies		Canada
Phone:	+1-905-413-5831
e-mail:	mstoodle@xxxxxxxxxx
We cannot solve our problems with the same thinking we used when we created them - Albert Einstein

From:      
 Dibyendu Majumdar <mobile@xxxxxxxxxxxxxxx>
To:      
 omr developer discussions
<omr-dev@xxxxxxxxxxx>
Date:      
 2018/06/27 05:20 PM
Subject:    
   [omr-dev] Calling
functions recursively and via pointers
Sent by:    
   omr-dev-bounces@xxxxxxxxxxx

---

Hi,

I am working on two features currently missing in my C front-end:

a) Recursive function calls
b) Calling a function through a pointer obtained at runtime

Any pointers to IL opcode / documentation / or relevant ILBuilder /
JITBuilder code would be much appreciated.

Thanks and Regards
Dibyendu
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