Add some more instruction support to optimizing compiler.

This adds a few more DEX instructions to the optimizing compiler's
builder (constants, moves, if_xx, etc).

Also:
* Changes the codegen for IF_XX instructions to use a condition
  rather than comparing a value against 0.
* Fixes some instructions in the ARM disassembler.
* Fixes PushList and PopList in the thumb2 assembler.
* Switches the assembler for the optimizing compiler to thumb2
  rather than ARM.

Change-Id: Iaafcd02243ccc5b03a054ef7a15285b84c06740f

1 files changed, 19 insertions, 0 deletions

diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index 2a97fadbaf..490d345826 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -445,4 +445,23 @@ void HGraphVisitor::VisitBasicBlock(HBasicBlock* block) {
   }
 }
 
+
+bool HCondition::NeedsMaterialization() const {
+  if (!HasOnlyOneUse()) {
+    return true;
+  }
+  HUseListNode<HInstruction>* uses = GetUses();
+  HInstruction* user = uses->GetUser();
+  if (!user->IsIf()) {
+    return true;
+  }
+
+  // TODO: should we allow intervening instructions with no side-effect between this condition
+  // and the If instruction?
+  if (GetNext() != user) {
+    return true;
+  }
+  return false;
+}
+
 }  // namespace art