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[Hexagon] Resolve breakage in test_hexagon/test_cache_read_write #10520

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Merged
merged 8 commits into from
Mar 10, 2022
Merged

[Hexagon] Resolve breakage in test_hexagon/test_cache_read_write #10520

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daac188
[Hexagon] Resolve breakage in test_hexagon/test_cache_read_write
Lunderberg Mar 7, 2022
8cea1e1
Added comment indicating need for StackSizeChecker::MakeMemCopy.
Lunderberg Mar 7, 2022
2c1ee84
Updated unittests to run all contrib/test_hexagon at CI.
Lunderberg Mar 8, 2022
1088c66
CI bump
Lunderberg Mar 8, 2022
7de3ae0
Fix lint formatting error.
Lunderberg Mar 9, 2022
794dbbf
Updated fix to remove StackSizeChecker entirely.
Lunderberg Mar 9, 2022
bc372da
Bugfix, verify the precheck's allocations, not own.
Lunderberg Mar 9, 2022
4ff6471
Bugfix, pass context information to the precheck.
Lunderberg Mar 9, 2022
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31 changes: 24 additions & 7 deletions src/tir/transforms/lower_tvm_builtin.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,17 @@
namespace tvm {
namespace tir {

namespace {
Call MakeMemCopyHelper(const CallNode* op, std::string packed_func_name) {
PrimExpr dst = op->args[0];
PrimExpr src = op->args[1];
PrimExpr size = op->args[2];

return Call(DataType::Int(32), builtin::tvm_call_packed(),
{StringImm(packed_func_name), dst, src, size});
}
} // namespace

class StackSizeChecker : public StmtExprVisitor {
public:
struct StackSizes {
Expand Down Expand Up @@ -73,10 +84,19 @@ class StackSizeChecker : public StmtExprVisitor {
return MakeShape(op);
} else if (op->op.same_as(builtin::tvm_stack_make_array())) {
return MakeArray(op);
} else if (op->op.same_as(builtin::mem_copy())) {
return MakeMemCopy(op);
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@kparzysz-quic kparzysz-quic Mar 7, 2022

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Can't you just call MakeCallPacked for this?

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@Lunderberg Lunderberg Mar 7, 2022

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Not quite, because the additional string for the name of the PackedFunc to execute takes up another spot on the stack. But since I needed to test it in order to convince myself of that, I've added a comment to explain the reasoning.

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@Lunderberg Lunderberg Mar 7, 2022

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I also figured that by having the MakeMemCopyHelper be shared between StackSizeChecker and BuiltInLower makes it harder for them to get out of sync in the future.

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@kparzysz-quic kparzysz-quic Mar 8, 2022

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That makes sense. Does that mean that the name "nonexistent_function" is actually significant in the sense that its length equals or exceeds the length of the actually called function name? That would be worth a comment (if that's the case).

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@Lunderberg Lunderberg Mar 8, 2022

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Good question to ask, and no, the function name isn't significant. The stack size here is in number of arguments, where a string only counts as a single argument.

} else {
return StmtExprVisitor::VisitExpr_(op);
}
}

void MakeMemCopy(const CallNode* op) {
Call call_packed = MakeMemCopyHelper(op, "nonexistent_function");

return VisitExpr(call_packed);
}

// call shape
void MakeShape(const CallNode* op) {
// if args.size() == 0, it is still valid and represents a scalar
Expand Down Expand Up @@ -346,15 +366,12 @@ class BuiltinLower : public StmtExprMutator {
}

PrimExpr MakeMemCopy(const CallNode* op) {
PrimExpr dst = op->args[0];
PrimExpr src = op->args[1];
PrimExpr size = op->args[2];
std::stringstream packed_func_name;
packed_func_name << "device_api." << runtime::DeviceName(device_type_.as<IntImmNode>()->value)
<< ".mem_copy";

std::string fdevapi_prefix =
"device_api." + std::string(runtime::DeviceName(device_type_.as<IntImmNode>()->value));
Call call_packed = MakeMemCopyHelper(op, packed_func_name.str());

Call call_packed = Call(DataType::Int(32), builtin::tvm_call_packed(),
{StringImm(fdevapi_prefix + ".mem_copy"), dst, src, size});
return VisitExpr(call_packed);
}

Expand Down
3 changes: 2 additions & 1 deletion tests/python/contrib/test_hexagon/test_cache_read_write.py
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ def intrin_func(ins, outs):


@requires_hexagon_toolchain
def test_cache_read_write(android_serial_number, tvm_tracker_host, tvm_tracker_port):
def test_cache_read_write(android_serial_number, tvm_tracker_host, tvm_tracker_port, adb_server_socket):
size = 128
outer_shape = (size,)
factor = 16
Expand Down Expand Up @@ -115,6 +115,7 @@ def test_cache_read_write(android_serial_number, tvm_tracker_host, tvm_tracker_p
"rpc_tracker_host": tvm_tracker_host,
"rpc_tracker_port": tvm_tracker_port,
"rpc_server_port": 7070,
"adb_server_socket": adb_server_socket,
}
launcher = HexagonLauncher(serial_number=android_serial_number, rpc_info=rpc_info)
launcher.upload(dso_binary_path, dso_binary)
Expand Down