Cookiee235 commented on issue #17175:
URL: https://github.com/apache/tvm/issues/17175#issuecomment-2236870217
After my investigation, I found if we use the `relax.transform.FuseTIR()`
before the `relax.build`, the compilation will run well. However, I still
haven't figured out why the compilation crash was unexpected and why the script
ran well when adding the `FuseTIR` transform.
A workaround to avoid the bug
```
import tvm
from tvm import relax
from tvm.script import ir as I
from tvm.script import relax as R
@I.ir_module
class Module:
@R.function
def main(x: R.Tensor((3,), dtype="int64")) -> R.Tensor((3,),
dtype="int64"):
lv: R.Shape([3]) = R.tensor_to_shape(x)
lv: R.Shape([3]) = R.call_pure_packed("vm.builtin.tensor_to_shape",
x, sinfo_args=(R.Shape([3]),))
return lv
mod = Module
mod = tvm.relax.transform.LegalizeOps()(mod)
mod.show()
mod = relax.transform.FuseTIR()(mod) # newly added
ex = relax.build(mod, target='llvm')
vm = relax.VirtualMachine(ex, tvm.cpu())
```
Do we need to explicitly call the ``FuseTIR` transform before compiling any
model?
@ysh329 @tqchen @Hzfengsy @junrushao
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