672511b777c05bd80955b6d1a2e1bc617429aaf7 - platform_dalvik

commit	672511b777c05bd80955b6d1a2e1bc617429aaf7	[log] [tgz]
author	Elliott Hughes <enh@google.com>	Mon Apr 26 17:40:13 2010 -0700
committer	Elliott Hughes <enh@google.com>	Mon Apr 26 17:40:13 2010 -0700
tree	53740c95b6f1ed548dd69c797730bc424bd1140d
parent	b378dca9ed48a5758ba39bf8f84dfbe403728ff8 [diff]

Optimize idiv-int/lit for powers of 2.

before:

                   DivideIntByConstant10  32 XXXXXXXXXXXXXXXXXXXXXXXXXXXX|
                  DivideIntByConstant100  32 XXXXXXXXXXXXXXXXXXXXXXXXXXXX|
    DivideIntByConstant100_HandOptimized  34 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
                    DivideIntByConstant2  32 XXXXXXXXXXXXXXXXXXXXXXXXXXXX|
                 DivideIntByConstant2048  22 XXXXXXXXXXXXXXXXXXX|||||||
                    DivideIntByConstant8  20 XXXXXXXXXXXXXXXXX||||||||
                   DivideIntByVariable10  21 XXXXXXXXXXXXXXXXXX|||||||
                    DivideIntByVariable2  21 XXXXXXXXXXXXXXXXXX|||||||

after:

                               benchmark  ns logarithmic runtime
                   DivideIntByConstant10  32 XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
                  DivideIntByConstant100  32 XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    DivideIntByConstant100_HandOptimized  33 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
                    DivideIntByConstant2  11 XXXXXXXXX|||||||||||
                 DivideIntByConstant2048  13 XXXXXXXXXXX|||||||||||
                    DivideIntByConstant8  13 XXXXXXXXXXX|||||||||||
                   DivideIntByVariable10  21 XXXXXXXXXXXXXXXXXXX|||||||
                    DivideIntByVariable2  22 XXXXXXXXXXXXXXXXXXXX||||||

Bug: 2614702
Change-Id: I9dde73d80580446a362cdcc9b82959a4b6bfb384

vm/compiler/codegen/arm/CodegenDriver.c[diff]

1 file changed

tree: 53740c95b6f1ed548dd69c797730bc424bd1140d