66d126ea06ce3f507d86ca5f0d1f752170ac9be1 - platform/art

commit	66d126ea06ce3f507d86ca5f0d1f752170ac9be1	[log] [tgz]
author	David Brazdil <dbrazdil@google.com>	Fri Apr 03 16:02:44 2015 +0100
committer	David Brazdil <dbrazdil@google.com>	Wed Apr 15 12:51:49 2015 +0100
tree	8e247db17ef085b55725b21c64d292414fd00b32
parent	9bb3e8e10d7d9230a323511094a9e260062a1473 [diff]

ART: Implement HBooleanNot instruction

Optimizations simplifying operations on boolean values (boolean
simplifier, instruction simplifier) can benefit from having a special
HInstruction for negating booleans in order to perform more transforms
and produce faster machine code.

This patch implements HBooleanNot as 'x xor 1', assuming that booleans
are 1-bit integers and allowing for a single-instruction negation on
all supported platforms.

Change-Id: I33a2649c1821255b18a86ca68ed16416063c739f

compiler/optimizing/boolean_simplifier.cc[diff]
compiler/optimizing/code_generator_arm.cc[diff]
compiler/optimizing/code_generator_arm64.cc[diff]
compiler/optimizing/code_generator_x86.cc[diff]
compiler/optimizing/code_generator_x86_64.cc[diff]
compiler/optimizing/nodes.h[diff]
test/468-checker-bool-simplifier-regression/expected.txt[Renamed from test/468-bool-simplifier-regression/expected.txt - diff]
test/468-checker-bool-simplifier-regression/info.txt[Renamed from test/468-bool-simplifier-regression/info.txt - diff]
test/468-checker-bool-simplifier-regression/smali/TestCase.smali[Renamed from test/468-bool-simplifier-regression/smali/TestCase.smali - diff]
test/468-checker-bool-simplifier-regression/src/Main.java[Renamed from test/468-bool-simplifier-regression/src/Main.java - diff]

10 files changed

tree: 8e247db17ef085b55725b21c64d292414fd00b32