Fix bug with optimized try-catch on ARM/MIPS.

runtime/vm/intermediate_language_mips.cc

Index: runtime/vm/intermediate_language_mips.cc
===================================================================
--- runtime/vm/intermediate_language_mips.cc	(revision 25871)
+++ runtime/vm/intermediate_language_mips.cc	(working copy)
@@ -2126,16 +2126,29 @@
 }
 
 
-LocationSummary* CatchEntryInstr::MakeLocationSummary() const {
-  return LocationSummary::Make(0,
-                               Location::NoLocation(),
-                               LocationSummary::kNoCall);
+LocationSummary* CatchBlockEntryInstr::MakeLocationSummary() const {
+  UNREACHABLE();
+  return NULL;
 }
 
 
-// Restore stack and initialize the two exception variables:
-// exception and stack trace variables.
-void CatchEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+void CatchBlockEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  __ Bind(compiler->GetJumpLabel(this));
+  compiler->AddExceptionHandler(catch_try_index(),
+                                try_index(),
+                                compiler->assembler()->CodeSize(),
+                                catch_handler_types_);
+  // Restore pool pointer.
+  __ GetNextPC(CMPRES, TMP);
+  const intptr_t object_pool_pc_dist =
+     Instructions::HeaderSize() - Instructions::object_pool_offset() +
+     compiler->assembler()->CodeSize() - 1 * Instr::kInstrSize;
+  __ LoadFromOffset(PP, CMPRES, -object_pool_pc_dist);
+
+  if (HasParallelMove()) {
+    compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
+  }
+
   // Restore SP from FP as we are coming from a throw and the code for
   // popping arguments has not been run.
   const intptr_t fp_sp_dist =
@@ -2143,22 +2156,12 @@
   ASSERT(fp_sp_dist <= 0);
   __ AddImmediate(SP, FP, fp_sp_dist);
 
-  ASSERT(!exception_var().is_captured());
-  ASSERT(!stacktrace_var().is_captured());
-
+  // Restore stack and initialize the two exception variables:
+  // exception and stack trace variables.
   __ sw(kExceptionObjectReg,
         Address(FP, exception_var().index() * kWordSize));
   __ sw(kStackTraceObjectReg,
         Address(FP, stacktrace_var().index() * kWordSize));
-
-  __ GetNextPC(CMPRES, TMP);
-
-  // Calculate offset of pool pointer from the PC.
-  const intptr_t object_pool_pc_dist =
-     Instructions::HeaderSize() - Instructions::object_pool_offset() +
-     compiler->assembler()->CodeSize() - 1 * Instr::kInstrSize;
-
-  __ LoadFromOffset(PP, CMPRES, -object_pool_pc_dist);
 }