Support for narrow operands in "dangerous" operations.

This is a revert^2 of commit 636e870d55c1739e2318c2180fac349683dbfa97.

Rationale:
Under strict conditions, even operations that are sensitive
to higher order bits can vectorize by inspecting the operands
carefully. This enables more vectorization, as demonstrated
by the removal of quite a few TODOs.

Test: test-art-target, test-art-host
Change-Id: Ic2684f771d2e36df10432286198533284acaf472

1 files changed, 5 insertions, 1 deletions

diff --git a/compiler/optimizing/loop_optimization.h b/compiler/optimizing/loop_optimization.h
index 6d5978d337..35298d4076 100644
--- a/compiler/optimizing/loop_optimization.h
+++ b/compiler/optimizing/loop_optimization.h
@@ -137,7 +137,11 @@ class HLoopOptimization : public HOptimization {
                       HInstruction* opa,
                       HInstruction* opb,
                       Primitive::Type type);
-  void GenerateVecOp(HInstruction* org, HInstruction* opa, HInstruction* opb, Primitive::Type type);
+  void GenerateVecOp(HInstruction* org,
+                     HInstruction* opa,
+                     HInstruction* opb,
+                     Primitive::Type type,
+                     bool is_unsigned = false);
 
   // Vectorization idioms.
   bool VectorizeHalvingAddIdiom(LoopNode* node,