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feat(kernels): scaffold TVM FFI bidirectional interop test #202

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feat(kernels): scaffold TVM FFI bidirectional interop test #202

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835e419
feat(kernels): scaffold tvm ffi interop test
peter941221 Jun 2, 2026
76b9ece
fix(kernels): tighten tvm ffi test rebuild scope
peter941221 Jun 2, 2026
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95 changes: 95 additions & 0 deletions Cargo.lock
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2 changes: 2 additions & 0 deletions pegainfer-kernels/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ anyhow = { workspace = true }
cudarc = { workspace = true }
half = { workspace = true }
serde = { workspace = true }
tvm-ffi = { version = "0.1.0-alpha.0", optional = true }

[build-dependencies]
cc = { workspace = true }
Expand All @@ -17,6 +18,7 @@ default = []
deepseek-v4 = []
deepseek-v4-cutedsl-diagnostic = ["deepseek-v4"]
kimi-k2 = []
tvm-ffi-interop = ["dep:tvm-ffi"]

[lints]
workspace = true
30 changes: 30 additions & 0 deletions pegainfer-kernels/tests/fixtures/tvm_ffi_fixture.cc
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Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
#include <tvm/ffi/function.h>

namespace ffi = tvm::ffi;

int64_t AddOneScalar(int64_t x) { return x + 1; }

int64_t ApplyCallback(ffi::Function callback, int64_t x) {
return callback(x).cast<int64_t>();
}

int64_t CallRegisteredHostAddThree(int64_t x) {
ffi::Function callback =
ffi::Function::GetGlobalRequired("pegainfer.testing.add_three");
return callback(x).cast<int64_t>();
}

int64_t CallRegisteredHostFailIfNegative(int64_t x) {
ffi::Function callback =
ffi::Function::GetGlobalRequired("pegainfer.testing.fail_if_negative");
return callback(x).cast<int64_t>();
}

TVM_FFI_DLL_EXPORT_TYPED_FUNC(add_one_scalar, AddOneScalar);
TVM_FFI_DLL_EXPORT_TYPED_FUNC(apply_callback, ApplyCallback);
TVM_FFI_DLL_EXPORT_TYPED_FUNC(
call_registered_host_add_three,
CallRegisteredHostAddThree);
TVM_FFI_DLL_EXPORT_TYPED_FUNC(
call_registered_host_fail_if_negative,
CallRegisteredHostFailIfNegative);
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