commit 08df4b3da75366e5db37e696eaa7e855cba01deb
author Zheng Xu <zheng.xu@arm.com> Tue Mar 25 14:25:52 2014 +0000
committer Ian Rogers <irogers@google.com> Wed Mar 26 21:08:50 2014 -0700
tree d5b466ef1377716a0848bdde7d89a738c00952e3
parent 636583c586b78e188168e510452cef0645578f8d

Optimize easy multiply and easy div remainder.

Update OpRegRegShift and OpRegRegRegShift to use RegStorage parameters.
Add special cases for *0 and *1. Add more easy multiply special cases for
Arm.
Reuse easy multiply in SmallLiteralDivRem() to support remainder cases.

Change-Id: Icd76a993d3ac8d4988e9653c19eab4efca14fad0

compiler/dex/quick/mir_to_lir.h

diff --git a/compiler/dex/quick/mir_to_lir.h b/compiler/dex/quick/mir_to_lir.h
index 1c8f6dc..68c3d0f 100644
--- a/compiler/dex/quick/mir_to_lir.h
+++ b/compiler/dex/quick/mir_to_lir.h
@@ -811,6 +811,7 @@
     // Required for target - codegen helpers.
     virtual bool SmallLiteralDivRem(Instruction::Code dalvik_opcode, bool is_div,
                                     RegLocation rl_src, RegLocation rl_dest, int lit) = 0;
+    virtual bool EasyMultiply(RegLocation rl_src, RegLocation rl_dest, int lit) = 0;
     virtual LIR* CheckSuspendUsingLoad() = 0;
     virtual RegStorage LoadHelper(ThreadOffset offset) = 0;
     virtual LIR* LoadBaseDisp(RegStorage r_base, int displacement, RegStorage r_dest, OpSize size,