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Add relu.cpp example in test/neura/for_loop #127

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Add relu.cpp example in test/neura/for_loop #127

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Add relu.cpp example in test/neura/for_loop
Sep 20, 2025
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Add relu.cpp
Sep 20, 2025
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42 changes: 42 additions & 0 deletions test/neura/for_loop/relu.cpp
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// RUN: mlir-neura-opt %s | FileCheck %s

#include <stdio.h>

#define N 32

float input[N] = {
-1.0, 0.0, 1.0, 2.0, -3.0, 4.0, -5.0, 6.0,
-7.0, 8.0, -9.0, 10.0, -11.0, 12.0, -13.0, 14.0,
-15.0, 16.0, -17.0, 18.0, -19.0, 20.0, -21.0, 22.0,
-23.0, 24.0, -25.0, 26.0, -27.0, 28.0, -29.0, 30.0
};

float output[N];

void kernel(float input[], float output[]);

int main(){
//init output
for(int i=0; i<N; i++){
output[i]=0.0;
}

kernel(intput, output);

//print outputs
for(int i=0; i<N; i++){
print("output[%d] = %f\n", i, output[i]);
}

return 0;
}

void kernel(float input[], float output []){
for(int i = 0; i<N; ++i){
if(input[i]>0){
output[i] += input[i];
} else {
output[i] += 0;
}
}
}
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@tancheng tancheng Sep 20, 2025

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Provide a mlir test for this c++, plz refer to https://github.com/coredac/dataflow/blob/main/test/neura/for_loop/test.mlir

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@zsjiang99 zsjiang99 Sep 20, 2025

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Hi, cheng. I’ve modified other parts of relu.cpp, but I’ll need a bit more time to provide the MLIR test.

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@tancheng tancheng Sep 20, 2025

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Sure, take your time.

The corresponding mlir test has no mlir IRs there, it is just a bunch of commands to transform your provided C++ to our neura dialect.

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@zsjiang99 zsjiang99 Sep 20, 2025

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Do you mean that we only need to provide the RUN part, but not the CHECK part?

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@tancheng tancheng Sep 20, 2025

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CHECK part is also necessary, but they are just what generated by the corresponding command. For example,

// RUN: mlir-neura-opt %t-kernel.mlir\
// RUN:   --assign-accelerator \
// RUN:   --lower-llvm-to-neura \
// RUN:   --canonicalize-live-in \
// RUN:   --leverage-predicated-value \
// RUN:  | FileCheck %s

the FileCheck %s is for making sure the code/IR after CHECK and CHECK-NEXT are generated from above commands.

// RUN: | FileCheck %s --check-prefix=CHECK-FUSED is for making sure the code/IR after CHECK-FUSED and CHECK-FUSED-NEXT are generated from following commands:

// RUN: mlir-neura-opt %t-kernel.mlir\
// RUN:   --assign-accelerator \
// RUN:   --lower-llvm-to-neura \
// RUN:   --canonicalize-live-in \
// RUN:   --leverage-predicated-value \
// RUN:   --transform-ctrl-to-data-flow \
// RUN:   --fold-constant \
// RUN:   --fuse-pattern \
// RUN:  | FileCheck %s --check-prefix=CHECK-FUSED

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@zsjiang99 zsjiang99 Sep 20, 2025

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Ok, I see. I will try to make a mlir test for relu.cpp.