Drop computed handler count and index from AST.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index a3f04194a36e6cd0f2ab4d73b5868ec361457f4d..b7d161193c6ff1ecc693edcf0f1d700a7c5254d5 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -113,10 +113,6 @@ class JumpPatchSite BASE_EMBEDDED {
 // frames-mips.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());
@@ -2192,7 +2188,8 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       // re-boxing.
       __ bind(&l_try);
       __ pop(a0);                                        // result
-      EnterTryBlock(expr->index(), &l_catch);
+      int handler_index = NewHandlerTableEntry();
+      EnterTryBlock(handler_index, &l_catch);
       const int try_block_size = TryCatch::kElementCount * kPointerSize;
       __ push(a0);                                       // result
       __ jmp(&l_suspend);
@@ -2203,7 +2200,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       const int generator_object_depth = kPointerSize + try_block_size;
       __ lw(a0, MemOperand(sp, generator_object_depth));
       __ push(a0);                                       // 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()));
       __ li(a1, Operand(Smi::FromInt(l_continuation.pos())));
       __ sw(a1, FieldMemOperand(a0, JSGeneratorObject::kContinuationOffset));
@@ -2217,7 +2214,7 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       EmitReturnSequence();
       __ mov(a0, v0);
       __ bind(&l_resume);                              // received in a0
-      ExitTryBlock(expr->index());
+      ExitTryBlock(handler_index);
 
       // receiver = iter; f = 'next'; arg = received;
       __ bind(&l_next);