Change Call with TIRCallAttrs to call_lowered op #9312

electriclilies · 2021-10-18T23:54:26Z

In this PR, I change Call with TIRCallAttrs to a relay op called call_lowered. (I also rename CallTIRAttrs to CallLoweredAttrs). This means that after lowering, calls are of the form Call("call_lowered", [fn: GlobalVar, args: Tuple] Attrs(CallLoweredAttrs)).

One benefit to this approach is it is easy to identify calls to lowered functions-- instead of checking the type of the call's attributes, we can just check what the op is. This is especially helpful for passes that run both before an after lowering, like device planning and memory allocation.

I left the calling convention for extern functions as-is. A codegened extern call looks like this: Call(fn: GlobalVar, [arg1: Expr, ... argn: Expr], Attrs()) with null attributes. In the future we will probably need to change the extern calling convention to have attributes that store information like the target, but that is outside the scope of this work.

src/relay/op/vm/vm.cc

src/relay/backend/graph_plan_memory.cc

src/relay/op/vm/vm.cc

electriclilies · 2021-11-03T20:49:04Z

@mbs-octoml PTAL, I'm pretty sure I've resolved all the issues, and this is ready for review.
One thing I'm unsure of is that I don't think I need the explicit label for extern functions anymore-- it would be easy to take out but I could see it being useful in the future. LMK what you think about that.

mbs-octoml · 2021-11-04T18:47:58Z

In the overview comment prob should show that args must be a tuple (even for the zero and one arity case)

mbs-octoml

Thanks Lily. Mostly nits and a few of my personal style preferences (feel free to ignore those), so don't panic! Otherwise:

think we can tune up the Extract helper.
a bit worries about hiding the lowered vs original forms of the operators (eg device_copy), see comment inline.
feeling skittish about folding extern calls into the call_lowered convention just yet and suggest we back out of that.
Happy to look again on a PTAL.

mbs-octoml · 2021-11-04T18:30:14Z

include/tvm/relay/attrs/call.h

+ */
+
+/*!
+ * \file tvm/relay/attrs/annotation.h


nit: update comment

mbs-octoml · 2021-11-04T18:43:52Z

src/relay/op/call/call.h

+namespace tvm {
+namespace relay {
+
+Expr CallLowered(Expr func, Expr inputs, Attrs attrs, Array<Type> type_args, Span span);


nit: comments thanks!

mbs-octoml · 2021-11-04T18:45:20Z

src/relay/op/call/call.h

+
+Expr CallLowered(Expr func, Expr inputs, Attrs attrs, Array<Type> type_args, Span span);
+const Op& CallLoweredOp();
+std::pair<GlobalVar, Array<Expr>> ExtractFunctionAndArgs(const CallNode* call_node);


nit: it's a lot of boilerplate i know, but a struct for the return result is probably best long term.

super duper nit: for on_device and device_copy i called these Get.... Do I get to claim precedence?

mbs-octoml · 2021-11-04T18:53:34Z

src/relay/op/call/call.cc

+                    const TypeReporter& reporter) {
+  // Types = [func, args, ret_type]
+  ICHECK_EQ(types.size(), 3u);
+  auto func_type = types[0].as<FuncTypeNode>();


return false for these checks since we know nothing about how the expression was constructed.
even for the arity check i think?

and then can just the Assign for the TupleType do the check for types[1]

mbs-octoml · 2021-11-04T19:05:45Z

src/relay/op/call/call.cc

+
+const Op& CallLoweredOp() { return Op::Get("call_lowered"); }
+
+Expr CallLowered(Expr func, Expr inputs, Attrs attrs, Array<Type> type_args, Span span) {


nit: for symmetry with the Extract, inputs can be Array args.

You can std::move into the Call ctor (kinda a mico optimization, but good habit to get into to for when the perf really does matter).

mbs-octoml · 2021-11-04T20:33:45Z

src/relay/backend/te_compiler.cc

-      return {ext_func->prim_fn_var, Attrs()};
+      auto call_lowered_attrs = make_object<CallLoweredAttrs>();
+      // Mark the function as a extern function so that AOT knows what to do with
+      call_lowered_attrs->metadata.Set("extern_func", Integer(1));


I see the check in the graph_executor_codegen.cc but not aot_executor_codegen.cc. I wonder if we should leave the extern calls as regular old boring calls with no attributes and tackle them separately. Perhaps this method can return the call instead of pair so that the different call representations can be handled.

mbs-octoml · 2021-11-04T20:36:52Z

src/relay/op/memory/device_copy.cc

@@ -103,6 +107,20 @@ DeviceCopyProps GetDeviceCopyProps(const CallNode* call_node) {
    } else {
      return {call_node->args[0], src_dev_type, dst_dev_type};
    }
+  } else if (call_node->op == CallLoweredOp()) {


I'm a bit nervous about this one since there's a lot of usage patterns such as

props = GetProps
if (prop.body.defined()) { .... MakeDeviceCopy(...) ... }

which would silently demote call_lowered copies to regular copies.

I think safer would be to have a GetLoweredDeviceCopyProps so it's always clear which form is being matched against.

Talked with mark and we determined this is fine, he was just being a bit skittish

I think that this chunk of code is not necessary since I also deal with CallLoweredOp in GetPrimitiveDeviceCopyProps, I'm not sure why I put it in. Removing it

mbs-octoml · 2021-11-04T20:37:56Z

src/relay/op/vm/vm.cc

@@ -22,8 +22,6 @@
 * \brief Dialect operators for Relay VM.
 */

-#include "vm.h"


nit: might as well keep it -- standard idiom even though not strictly needed.

mbs-octoml · 2021-11-04T20:39:07Z

src/relay/transforms/device_domains.cc

-  if (tir_call_attrs->metadata.count("source_device") != 1 ||
-      tir_call_attrs->metadata.count("dst_device") != 1) {
-    return {};
+  if (call_node->op == CallLoweredOp()) {


I think this would become the GetLoweredDeviceCopyProps mentioned above, so no need for the helper here.

we decided we don't need that actually so this is OK as is.

mbs-octoml · 2021-11-04T20:40:40Z

src/relay/transforms/device_domains.h

@@ -275,6 +275,7 @@ class DeviceDomains {
  const Op& alloc_tensor_op = Op::Get("memory.alloc_tensor");
  const Op& shape_of_op = Op::Get("vm.shape_of");
  const Op& invoke_tvm_op = Op::Get("vm.invoke_tvm_op");
+  const Op& call_lowered = Op::Get("call_lowered");


nit: your CallLoweredOp() helper is good enough.
some day all these will use the same idiom.

electriclilies · 2021-11-09T19:45:19Z

@mbs-octoml I think this is ready for another review!

Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op

mbs-octoml

Two minor suggestions which are easily done in follow up. Thanks!

mbs-octoml · 2021-11-10T18:57:49Z

src/relay/backend/te_compiler.cc

@@ -628,15 +639,13 @@ class LowerTensorExprMutator : public DeviceAwareExprMutator {
      // TODO(mbs): Replace device_type with target so this lookup is unnecessary.
      target = GetTargetFromInteger(device_type, targets_);
    }
-
+    Array<Expr> visited_args;


not a correctness issue, but we are revisiting the args (bad rebase).

mbs-octoml · 2021-11-10T19:01:28Z

src/relay/op/memory/device_copy.cc

+    /* Get device props for a TIR function */
+    CallLoweredProps call_lowered_props = GetCallLoweredProps(call_node);
+
+    if (call_lowered_props.attrs.metadata.count("source_device") == 1 &&


confirming looks like we can avoid this here
(eventually GetPrimitiveDeviceCopyProps from device_domains.cc will need to get moved alongside this one (and renamed) but no need here)

mbrookhart · 2021-11-10T22:20:10Z

Thanks @electriclilies @mbs-octoml

electriclilies · 2021-11-10T22:50:07Z

@mbrookhart @mbs-octoml thanks!

electriclilies · 2021-11-10T23:44:36Z

Followed up in #9491

* main: (119 commits) [Topi][Op][PyTorch][Vitas] Fix inconsistent kernel layout conventions for conv2d_transpose (apache#9336) Fix repository URL in ubuntu_install_rocm.sh (apache#9425) Add LLVM-13 installation to Docker setup (apache#9498) [Relay] Use target_host determined at Relay level instead of recalculating it (apache#9499) Arm(R) Ethos(TM)-U NPU BinaryElementwise operators support (apache#9442) [COMMUNITY] Junru's and Wuwei's PGP key for ASF release (apache#9488) Add default for split op (apache#9489) [HOTFIX][TARGET] Change LOG in compilation config to DLOG (apache#9486) Fixed some warnings about lambda's closures that are bigger than necessary (apache#9481) [Support] Add libinfo into the runtime build (apache#9310) Change Call with TIRCallAttrs to call_lowered op (apache#9312) [ETHOSN] Streamline Ethos(TM)-N cross-compile rpc usage (apache#9477) [CMSIS-NN] Assert correct amount of CMSIS-NN artifacts in MLF (apache#9480) [MicroTVM][PyTest] Explicitly skip MicroTVM unittests. (apache#9335) [microNPU] Replace ICHECK with diagnostic context in type inference (apache#9470) Better host handling in CompilationConfig & debug printing (apache#9460) [AOT][Tests] Use pre-built libraries in Reference System tests (apache#9271) [TIR] Add type hint for TIR (apache#9432) [TVMC] Add test for quantized pytorch model (apache#9467) [CMSIS-NN] Convert CMSIS-NN to use Target Hooks (apache#9397) ...

* followups from #9312 * remove unneeded moves

* Introduce call_lowered op Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op * lint * Fix AOT to deal with externs * add const auto& * Fix aot crt test

* followups from apache#9312 * remove unneeded moves

* Introduce call_lowered op Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op * lint * Fix AOT to deal with externs * add const auto& * Fix aot crt test

* followups from apache#9312 * remove unneeded moves

* Introduce call_lowered op Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op * lint * Fix AOT to deal with externs * add const auto& * Fix aot crt test

* followups from apache#9312 * remove unneeded moves

* Introduce call_lowered op Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op * lint * Fix AOT to deal with externs * add const auto& * Fix aot crt test

* followups from apache#9312 * remove unneeded moves

* Introduce call_lowered op Add op vm.call_tir Change from checking if CallNode has CallTIRAttrs to checking if the Op is vm.call_tir Change device_domains to use vm.call_tir op more explicitly Fixed issue in type checker, now have seg fault :( Fix typo -- most of VM tests pass now Interpreter now deals with call_tir properly Fix typo in te_compiler Use InvokeTVMOp and CallTIR Add some checks to graph_plan_memory.cc Make GetToken skip function types C++ TESTS PASS WOOHOO Remove prints formatting vm.call_tir -> call_tir and more comment removals call_tir -> call_lowered fix lint clang format Remove compute from non computational vm ops missed some semicolons in prev commit Fix warning Move call_lowered to relay/op/call/call.cc and rename util func Add helper fn that returns lowered_call op fix import order clang format Add constraint to call_lowered type rel clean up empty token vector comment Move CallTIRAttrs to include/tvm/relay/attrs/call.h Rename TIRCallAttrs as CallLoweredAttrs lint Add helper for extracting func and args from call_lowered Change graph_executor_codegen to use helper function Update interpreter to use helper Fix device_domains.cc -- could still use cleanup, also I am not sure why there are still direct calls to primfns in DomainforCallee Clean up DeviceCopyProps and lint lint return CallLoweredAttrs with the extern func comment note in comment Progress & notes. Realized that I am not handling externs correctly not sure why this ever worked before? Clean up CreateFuncCall signature, notes comments Fix extern function handling extern_function -> extern_func fix DeviceAwareVisitExpr_ -- now it handles both lowered and normal calls yay passes AOT tests! formatting and comment removal cleanup Introduce call_lowered op * lint * Fix AOT to deal with externs * add const auto& * Fix aot crt test

* followups from apache#9312 * remove unneeded moves

mbs-octoml reviewed Oct 19, 2021

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electriclilies force-pushed the call_tir_cleaned_up branch 2 times, most recently from 9435c6d to 5ebbe78 Compare October 26, 2021 23:48

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electriclilies changed the title ~~[DRAFT] Change Call with TIRCallAttrs to call_lowered op~~ Change Call with TIRCallAttrs to call_lowered op Oct 27, 2021

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Followup from #9312 (Introduce call_lowered op) #9491

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Change Call with TIRCallAttrs to call_lowered op #9312

Change Call with TIRCallAttrs to call_lowered op #9312

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		const Op& CallLoweredOp() { return Op::Get("call_lowered"); }

		Expr CallLowered(Expr func, Expr inputs, Attrs attrs, Array<Type> type_args, Span span) {

Change Call with TIRCallAttrs to call_lowered op #9312

Change Call with TIRCallAttrs to call_lowered op #9312

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