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2009 Jul 30
2
[LLVMdev] How to produce a "Intrinsic Function" call instruction?
Hi, all.
I have noticed that LLVM supports some Intrinsic Functions such as *"**
llvm.sadd.with.overflow"* described in
http://llvm.org/docs/LangRef.html#int_sadd_overflow. We can use these
functions and needn't define the function bodies.
For example, I can manually insert codes:
* %res = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %a, i32 %b)
%sum = extractvalue