[llvm-dev] How to insert vector type input parameter for function in C/C++ API?

[Michael Choi via llvm-dev]

Thank you so much Craig!

I tried it. But still complaining. Here is the error message during
compilation.

HowToUseJIT_SIMD_FuncProto.cpp:94:55: error: expected unqualified-id

VectorType::(Type::getInt32Ty(Context),4),



THIS IS MY CODE:
  LLVMContext Context;

  std::unique_ptr<Module> Owner = make_unique<Module>("test", Context);
  Module *M = Owner.get();

  Function *Add1F =
    cast<Function>(M->getOrInsertFunction("add1",

VectorType::(Type::getInt32Ty(Context),4),

VectorType::(Type::getInt32Ty(Context),4),


//Type::getInt32Ty(Context),            //This is working fine

//Type::getInt32Ty(Context),            //This is working fine

                                          nullptr));


Any idea?
Please let me know what is wrong in my code.

Thanks,
Michael

On Fri, Apr 7, 2017 at 5:36 PM, Craig Topper <craig.topper at gmail.com> wrote:

> To create a vector type you can call VectorType::get(<scalar element
> type>, <num of elements>) and pass the output of that to the Type argument
> when creating instructions. To get the scalar element type you can use the
> get*Ty methods in IRBuilder or the Type::get*Ty methods.
>
> ~Craig
>
> On Fri, Apr 7, 2017 at 5:20 PM, Michael Choi via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> I am working on AVX2 code generation by LLVM framework.
>>
>> I want to generate LLVM-IR code for the following code by C/C++ API from
>> LLVM framework. I am using LLVM3.8.
>> Basically, I want to generate TARGET (Refer to below) LLVM-IR code for
>> SOURCE function by C/C++ API.
>> As you see below, the AVX2 data type is __m256i which is vector type. How
>> can I indicate vector type (function return type, input parameters) for
>> IRBuiler by C/C++ APIs?
>>
>> I don't see any example online and please let me know if anybody has
>> examples.
>>
>>
>>
>> SOURCE:
>> #include "immintrin.h"
>> __m256i sum(__m256i a, __m256i b) {
>>     return a+b;
>> }
>>
>> TARGET:
>> michael at michael-Precision-Tower-3420:~/Year_2017/work_DEMO$ cat
>> avx2_add2.ll
>> ; ModuleID = 'avx2_add2.c'
>> target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
>> target triple = "x86_64-unknown-windows-cygnus"
>>
>> ; Function Attrs: nounwind
>> define <4 x i64> @sum(<4 x i64> %a, <4 x i64> %b) #0 {
>>   %1 = alloca <4 x i64>, align 32
>>   %2 = alloca <4 x i64>, align 32
>>   store <4 x i64> %a, <4 x i64>* %1, align 32
>>   store <4 x i64> %b, <4 x i64>* %2, align 32
>>   %3 = load <4 x i64>, <4 x i64>* %1, align 32
>>   %4 = load <4 x i64>, <4 x i64>* %2, align 32
>>   %5 = add <4 x i64> %3, %4
>>   ret <4 x i64> %5
>> }
>>
>> attributes #0 = { nounwind "disable-tail-calls"="false"
>> "less-precise-fpmad"="false" "no-frame-pointer-elim"="false"
>> "no-infs-fp-math"="false" "no-nans-fp-math"="false"
>> "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2"
>> "unsafe-fp-math"="false" "use-soft-float"="false" }
>>
>> !llvm.ident = !{!0}
>>
>> !0 = !{!"clang version 3.8.1 (tags/RELEASE_381/final)"}
>>
>> Thanks,
>> Michael
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>
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