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/bounds_check_elimination.cc b/compiler/optimizing/bounds_check_elimination.cc
index c0d4c37659..1ef4d751a2 100644
--- a/compiler/optimizing/bounds_check_elimination.cc
+++ b/compiler/optimizing/bounds_check_elimination.cc
@@ -1983,7 +1983,7 @@ class BCEVisitor final : public HGraphVisitor {
             }
             user->RemoveAsUserOfInput(index);
             user->SetRawEnvAt(index, phi);
-            phi->AddEnvUseAt(user, index);
+            phi->AddEnvUseAt(GetGraph()->GetAllocator(), user, index);
           }
         }
       }