tree a69817c3b2d455273b23d083267ef08c8b9adaee
parent d961043ff1dd6fddb68aa90c1f939cfafec24219
author Aart Bik <ajcbik@google.com> 1519848106 -0800
committer Aart Bik <ajcbik@google.com> 1519938424 -0800

Introduce ABS as HIR nodes.

NOTE: step 1 of 2 for
"Introduce MIN/MAX/ABS as HIR nodes."

Rationale:
Having explicit MIN/MAX/ABS operations (in contrast
with intrinsics) simplifies recognition and optimization
of these common operations (e.g. constant folding, hoisting,
detection of saturation arithmetic). Furthermore, mapping
conditionals, selectors, intrinsics, etc. (some still TBD)
onto these operations generalizes the way they are optimized
downstream substantially.

Bug: b/65164101

Test: test-art-host,target
Change-Id: I9c93987197216158ba02c8aca2385086adedabc4