llvm dev - Nov 2012 - [LLVMdev] inserting a target specific builtin in llvm pass

Hi,

I'm writing a pass which needs to insert an intrinsic in for my target, but
I'm not sure how to create the call. I've tried defining a function,
with
the target intrinsic as its name, and then creating a new CallInst to call
it. But how am I supposed to declare this function as an intrinsic?

Thanks,

Sam



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Hi Sam,
> I'm writing a pass which needs to insert an intrinsic in for my target,
but
> I'm not sure how to create the call. I've tried defining a
function, with
> the target intrinsic as its name, and then creating a new CallInst to call
> it. But how am I supposed to declare this function as an intrinsic?
you don't have to do anything special for intrinsics, you can just declare
them
like any other function declaration.

Ciao, Duncan.

You can do like this:
Function *MyFunc = Intrinsic::getDeclaration(M, Intrinsic::my_instrinc);
CallInst::Create(Myfunc, Args, "", InsertBefore);


-----Original Message-----
From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
Behalf Of Sam Parker
Sent: Monday, November 26, 2012 2:25 PM
To: llvmdev at cs.uiuc.edu
Subject: [LLVMdev] inserting a target specific builtin in llvm pass

Hi,

I'm writing a pass which needs to insert an intrinsic in for my target, but
I'm not sure how to create the call. I've tried defining a function,
with the target intrinsic as its name, and then creating a new CallInst to call
it. But how am I supposed to declare this function as an intrinsic?

Thanks,

Sam



--
View this message in context:
http://llvm.1065342.n5.nabble.com/inserting-a-target-specific-builtin-in-llvm-pass-tp51823.html
Sent from the LLVM - Dev mailing list archive at Nabble.com.
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