tree 8e247db17ef085b55725b21c64d292414fd00b32
parent 9bb3e8e10d7d9230a323511094a9e260062a1473
author David Brazdil <dbrazdil@google.com> 1428073364 +0100
committer David Brazdil <dbrazdil@google.com> 1429098709 +0100

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