From cced8ba4245a061ab047a0a6882468d75d619dd9 Mon Sep 17 00:00:00 2001
From: Artem Serov <artem.serov@linaro.org>
Date: Wed, 19 Jul 2017 18:18:09 +0100
Subject: ART: Introduce individual HInstruction cloning.

Introduce API for HInstruction cloning, support it for a few
instructions. add a gtest.

Test: cloner_test.cc, test-art-target, test-art-host.

Change-Id: I8b6299be5d04a26390d9ef13a20ce82ee5ae4afe
---
 compiler/optimizing/instruction_simplifier.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'compiler/optimizing/instruction_simplifier.cc')

diff --git a/compiler/optimizing/instruction_simplifier.cc b/compiler/optimizing/instruction_simplifier.cc
index 2bd2d5f0a1..7a1659e9d5 100644
--- a/compiler/optimizing/instruction_simplifier.cc
+++ b/compiler/optimizing/instruction_simplifier.cc
@@ -27,6 +27,10 @@
 
 namespace art {
 
+// Whether to run an exhaustive test of individual HInstructions cloning when each instruction
+// is replaced with its copy if it is clonable.
+static constexpr bool kTestInstructionClonerExhaustively = false;
+
 class InstructionSimplifierVisitor : public HGraphDelegateVisitor {
  public:
   InstructionSimplifierVisitor(HGraph* graph,
@@ -130,6 +134,11 @@ class InstructionSimplifierVisitor : public HGraphDelegateVisitor {
 };
 
 void InstructionSimplifier::Run() {
+  if (kTestInstructionClonerExhaustively) {
+    CloneAndReplaceInstructionVisitor visitor(graph_);
+    visitor.VisitReversePostOrder();
+  }
+
   InstructionSimplifierVisitor visitor(graph_, codegen_, compiler_driver_, stats_);
   visitor.Run();
 }
-- 
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