Instruction scheduling for ARM.

Performance improvements on various benchmarks with this CL:

benchmarks     improvements
---------------------------
algorithm                1%
benchmarksgame           2%
caffeinemark             2%
math                     3%
stanford                 4%

Tested on ARM Cortex-A53 CPU.

The code size impact is negligible.

Test: m test-art-host
Test: m test-art-target
Change-Id: I314c90c09ce27e3d224fc686ef73c7d94a6b5a2c

1 files changed, 4 insertions, 1 deletions

diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index 065c11eddb..f928f71209 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -638,11 +638,14 @@ void OptimizingCompiler::RunArchOptimizations(InstructionSet instruction_set,
           new (arena) arm::InstructionSimplifierArm(graph, stats);
       SideEffectsAnalysis* side_effects = new (arena) SideEffectsAnalysis(graph);
       GVNOptimization* gvn = new (arena) GVNOptimization(graph, *side_effects, "GVN$after_arch");
+      HInstructionScheduling* scheduling =
+          new (arena) HInstructionScheduling(graph, instruction_set, codegen);
       HOptimization* arm_optimizations[] = {
         simplifier,
         side_effects,
         gvn,
-        fixups
+        fixups,
+        scheduling,
       };
       RunOptimizations(arm_optimizations, arraysize(arm_optimizations), pass_observer);
       break;