Drop computed handler count and index from AST.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 95f3c8c0615af6a1aad13c21ecb5afcaba770f2f..9a01faddc1f42738518b1dcac7b70d6d8f04562b 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -105,10 +105,6 @@ class JumpPatchSite BASE_EMBEDDED {
 // frames-arm.h for its layout.
 void FullCodeGenerator::Generate() {
   CompilationInfo* info = info_;
-  handler_table_ =
-      Handle<HandlerTable>::cast(isolate()->factory()->NewFixedArray(
-          HandlerTable::LengthForRange(function()->handler_count()), TENURED));
-
   profiling_counter_ = isolate()->factory()->NewCell(
       Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate()));
   SetFunctionPosition(function());
@@ -2207,7 +2203,8 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       // re-boxing.
       __ bind(&l_try);
       __ pop(r0);                                        // result
-      EnterTryBlock(expr->index(), &l_catch);
+      int handler_index = NewHandlerTableEntry();
+      EnterTryBlock(handler_index, &l_catch);
       const int try_block_size = TryCatch::kElementCount * kPointerSize;
       __ push(r0);                                       // result
       __ jmp(&l_suspend);
@@ -2217,7 +2214,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       const int generator_object_depth = kPointerSize + try_block_size;
       __ ldr(r0, MemOperand(sp, generator_object_depth));
       __ push(r0);                                       // g
-      __ Push(Smi::FromInt(expr->index()));              // handler-index
+      __ Push(Smi::FromInt(handler_index));              // handler-index
       DCHECK(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos()));
       __ mov(r1, Operand(Smi::FromInt(l_continuation.pos())));
       __ str(r1, FieldMemOperand(r0, JSGeneratorObject::kContinuationOffset));
@@ -2230,7 +2227,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       __ pop(r0);                                      // result
       EmitReturnSequence();
       __ bind(&l_resume);                              // received in r0
-      ExitTryBlock(expr->index());
+      ExitTryBlock(handler_index);
 
       // receiver = iter; f = 'next'; arg = received;
       __ bind(&l_next);