Deopt does not throw

Rationale:
"CanThrow" of deopt was possibly misused to prevents some
optimizations. However, the instruction technically cannot
throw an exception, and indeed crashed the graph verifier
for some corner cases. This Cl sets that right.

Bug: 29868356

Test: test-art-host,target
Change-Id: Icb551d3b2935282a70ad673a0544e4fe01104da1

1 files changed, 0 insertions, 9 deletions

diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index f784f8f7f3..79bb70b9aa 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -1916,15 +1916,6 @@ const HTryBoundary* HBasicBlock::ComputeTryEntryOfSuccessors() const {
   }
 }
 
-bool HBasicBlock::HasThrowingInstructions() const {
-  for (HInstructionIterator it(GetInstructions()); !it.Done(); it.Advance()) {
-    if (it.Current()->CanThrow()) {
-      return true;
-    }
-  }
-  return false;
-}
-
 static bool HasOnlyOneInstruction(const HBasicBlock& block) {
   return block.GetPhis().IsEmpty()
       && !block.GetInstructions().IsEmpty()