tree 2a5dbaf6752357b537fe956ec18f09ab3d8ee79f
parent d20a4d76c33cd6e609ad6b1b3cde09fdcbdde05c
author Andreas Gampe <agampe@google.com> 1495494532 -0700
committer Andreas Gampe <agampe@google.com> 1530221603 -0700

ART: Improve Constructor.newInstance

Special-case InvokeMethod to be constructor-specific so as to avoid
unnecessary and duplicate checks. Refactor for some code sharing.

Reduces Constructor.newInstance for Integer by approximately 15%
(ten runs of 10000000 invocations, reporting mean per invocation,
host x86-64 optimizing, perf stat numbers are for complete run
and do not exclude, for example, setup and prologue GC):

                   Before      After

(perf stat)
Instructions       2503.4      2149.8
Branches           450.8       384.4
Branch-misses      1.83        0.85

(time)
Time (ns)          335.17      278.58

Bug: 20269715
Test: mmma art
Test: m test-art-host
Change-Id: Id105e542a19d72efaace60ad39fcef5e42dde006