Optimizing: Speed up `HInstruction::Add{,Env}UseAt()`.

Avoid three dependent loads to fetch the allocator on the
hot paths. Inline the `FixupUserRecordsAfter*UseInsertion()`
loop and use the fact that it's known to execute exactly one
or two iterations.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 181943478
Change-Id: I7fd4d48caebc6aeb13fb9a9f8146a06129c72b2e

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/optimizing/instruction_builder.cc b/compiler/optimizing/instruction_builder.cc
index 1f2628c8ec..74880463c3 100644
--- a/compiler/optimizing/instruction_builder.cc
+++ b/compiler/optimizing/instruction_builder.cc
@@ -305,7 +305,7 @@ void HInstructionBuilder::InitializeInstruction(HInstruction* instruction) {
         graph_->GetArtMethod(),
         instruction->GetDexPc(),
         instruction);
-    environment->CopyFrom(ArrayRef<HInstruction* const>(*current_locals_));
+    environment->CopyFrom(allocator_, ArrayRef<HInstruction* const>(*current_locals_));
     instruction->SetRawEnvironment(environment);
   }
 }