Fix conversion to float32, typing issue, split apart asm-wasm tests.

src/compiler/wasm-compiler.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/wasm-compiler.h"
 
 #include "src/isolate-inl.h"
 
 #include "src/base/platform/elapsed-timer.h"
 #include "src/base/platform/platform.h"
@@ skipping 1587 matching lines @@
   const Operator* load_op = jsgraph()->machine()->Load(type);
 
   Node* load =
       graph()->NewNode(load_op, stack_slot_param0, jsgraph()->Int32Constant(0),
                        *effect_, *control_);
   *effect_ = load;
   return load;
 }
 
 Node* WasmGraphBuilder::BuildF32SConvertI64(Node* input) {
+  // TODO(titzer/bradnelson): Check handlng of asm.js case.
   return BuildIntToFloatConversionInstruction(
       input, ExternalReference::wasm_int64_to_float32(jsgraph()->isolate()),
       MachineRepresentation::kWord64, MachineType::Float32());
 }
 Node* WasmGraphBuilder::BuildF32UConvertI64(Node* input) {
+  // TODO(titzer/bradnelson): Check handlng of asm.js case.
   return BuildIntToFloatConversionInstruction(
       input, ExternalReference::wasm_uint64_to_float32(jsgraph()->isolate()),
       MachineRepresentation::kWord64, MachineType::Float32());
 }
 Node* WasmGraphBuilder::BuildF64SConvertI64(Node* input) {
   return BuildIntToFloatConversionInstruction(
       input, ExternalReference::wasm_int64_to_float64(jsgraph()->isolate()),
       MachineRepresentation::kWord64, MachineType::Float64());
 }
 Node* WasmGraphBuilder::BuildF64UConvertI64(Node* input) {
@@ skipping 1030 matching lines @@
         static_cast<int>(function.code_end_offset - function.code_start_offset),
         decode_ms, static_cast<int>(graph.NodeCount()), compile_ms);
   }
   return code;
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8