[enco] Introduce ConcatLoweringPass (#3061)

This commit introduces ConcatLoweringPass and updates the backend to use
it instead of lower_concat function.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>

diff --git a/contrib/enco/core/src/Backend.cpp b/contrib/enco/core/src/Backend.cpp
index 5940846..65e142a 100644 (file)
--- a/contrib/enco/core/src/Backend.cpp
+++ b/contrib/enco/core/src/Backend.cpp
@@ -119,6 +119,8 @@ void BackendImpl::compile(coco::Module *m, coco::Data *d)
   pipeline.append(make_unique<DeadObjectEliminationPass>());
   // Lower Copy as Shuffle
   pipeline.append(make_unique<CopyLoweringPass>());
+  // Lower ConcatF as Shuffle if it is not delegated to NNAPI yet
+  pipeline.append(make_unique<ConcatLoweringPass>());
 
   // Apply transforms in the pipeline
   for (uint32_t n = 0; n < pipeline.size(); ++n)
@@ -137,9 +139,6 @@ void BackendImpl::compile(coco::Module *m, coco::Data *d)
   // that share the same bag as their underlying bag
   assert(!has_inout_bag(code(sess)->module()));
 
-  // Lower ConcatF as Shuffle if it is not delegated to NNAPI yet
-  lower_concat(code(sess));
-
   generate_bypass_shuffle(code(sess));
 
   eliminate_free_instr(code(sess));

diff --git a/contrib/enco/core/src/Transforms/ConcatLowering.h b/contrib/enco/core/src/Transforms/ConcatLowering.h
index f2d1599..5d20e62 100644 (file)
--- a/contrib/enco/core/src/Transforms/ConcatLowering.h
+++ b/contrib/enco/core/src/Transforms/ConcatLowering.h
@@ -18,6 +18,7 @@
 #define __ENCO_CONCAT_LOWERING_H__
 
 #include "Code.h"
+#include "Pass.h"
 
 namespace enco
 {
@@ -27,6 +28,16 @@ namespace enco
  */
 void lower_concat(enco::Code *code);
 
+struct ConcatLoweringPass final : public Pass
+{
+  PASS_CTOR(ConcatLoweringPass)
+  {
+    // DO NOTHING
+  }
+
+  void run(const SessionID &sess) const override { lower_concat(code(sess)); }
+};
+
 } // namespace enco
 
 #endif // __ENCO_CONCAT_LOWERING_H__