2020-09-19 05:49:04 +08:00
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// RUN: npcomp-run-mlir %s \
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// RUN: -invoke pow2 \
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// RUN: -arg-value="dense<8.0> : tensor<f32>" \
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// RUN: -shared-libs=%npcomp_runtime_shlib 2>&1 \
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// RUN: | FileCheck %s
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// 2^8 == 256
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// CHECK: output #0: dense<2.560000e+02> : tensor<f32>
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func @pow2(%arg0: tensor<f32>) -> tensor<f32> {
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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// Slight awkwardness: convert the tensor<f32> to an index.
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// TODO: Allow passing plain integers/floats (not tensors) at
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// calling convention boundaries.
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2020-12-12 06:43:38 +08:00
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%num_iters_float = tensor.extract %arg0[] : tensor<f32>
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2020-09-19 05:49:04 +08:00
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%num_iters_i32 = fptosi %num_iters_float : f32 to i32
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%num_iters = index_cast %num_iters_i32 : i32 to index
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// Repeatedly add the value to itself %num_iters times.
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%tensor_c1 = constant dense<1.0> : tensor<f32>
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%ret = scf.for %iv = %c0 to %num_iters step %c1 iter_args(%iter = %tensor_c1) -> tensor<f32> {
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%doubled = tcf.add %iter, %iter : (tensor<f32>, tensor<f32>) -> tensor<f32>
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scf.yield %doubled : tensor<f32>
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}
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return %ret : tensor<f32>
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}
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