Fix code generation with materialized conditions.

Change-Id: I8630af3c13fc1950d3fa718d7488407b00898796

1 files changed, 10 insertions, 2 deletions

diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index 1a24677261..73936e7e28 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -534,14 +534,22 @@ bool HCondition::NeedsMaterialization() const {
     return true;
   }
 
-  // TODO: should we allow intervening instructions with no side-effect between this condition
-  // and the If instruction?
+  // TODO: if there is no intervening instructions with side-effect between this condition
+  // and the If instruction, we should move the condition just before the If.
   if (GetNext() != user) {
     return true;
   }
   return false;
 }
 
+bool HCondition::IsBeforeWhenDisregardMoves(HIf* if_) const {
+  HInstruction* previous = if_->GetPrevious();
+  while (previous != nullptr && previous->IsParallelMove()) {
+    previous = previous->GetPrevious();
+  }
+  return previous == this;
+}
+
 bool HInstruction::Equals(HInstruction* other) const {
   if (!InstructionTypeEquals(other)) return false;
   DCHECK_EQ(GetKind(), other->GetKind());