Introduce InvokeMathCFunction that can be used to directly invoke mathematical function provided by…

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 1591 matching lines @@
 RawAbstractType* DoubleToSmiInstr::CompileType() const {
   return Type::SmiType();
 }
 
 
 RawAbstractType* DoubleToDoubleInstr::CompileType() const {
   return Type::Double();
 }
 
 
+RawAbstractType* InvokeMathCFunctionInstr::CompileType() const {
+  return Type::Double();
+}
+
+
 RawAbstractType* CheckClassInstr::CompileType() const {
   return AbstractType::null();
 }
 
 
 RawAbstractType* CheckSmiInstr::CompileType() const {
   return AbstractType::null();
 }
 
 
@@ skipping 1046 matching lines @@
     case kFloat64ArrayCid:
     case kFloat32ArrayCid:
     case kExternalUint8ArrayCid:
       return ByteArray::length_offset();
     default:
       UNREACHABLE();
       return -1;
   }
 }
 
+
+intptr_t InvokeMathCFunctionInstr::ArgumentCountFor(
+    MethodRecognizer::Kind kind) {
+  switch (kind) {
+    case MethodRecognizer::kDoubleTruncate:
+    case MethodRecognizer::kDoubleRound:
+    case MethodRecognizer::kDoubleFloor:
+    case MethodRecognizer::kDoubleCeil: {
+      ASSERT(!CPUFeatures::double_truncate_round_supported());
+      return 1;
+    }
+    case MethodRecognizer::kDoublePow:
+      return 2;
+    default:
+      UNREACHABLE();
+  }
+  return 0;
+}
+
+
+extern const RuntimeEntry kPowRuntimeEntry(
+    "libc_pow", reinterpret_cast<RuntimeFunction>(&pow), 0, true);
+
+extern const RuntimeEntry kFloorRuntimeEntry(
+    "libc_floor", reinterpret_cast<RuntimeFunction>(&floor), 0, true);
+
+extern const RuntimeEntry kCeilRuntimeEntry(
+    "libc_ceil", reinterpret_cast<RuntimeFunction>(&ceil), 0, true);
+
+extern const RuntimeEntry kTruncRuntimeEntry(
+    "libc_trunc", reinterpret_cast<RuntimeFunction>(&trunc), 0, true);
+
+extern const RuntimeEntry kRoundRuntimeEntry(
+    "libc_round", reinterpret_cast<RuntimeFunction>(&round), 0, true);
+
+
+const RuntimeEntry& InvokeMathCFunctionInstr::TargetFunction() const {
+  switch (recognized_kind_) {
+    case MethodRecognizer::kDoubleTruncate:
+      return kTruncRuntimeEntry;
+    case MethodRecognizer::kDoubleRound:
+      return kRoundRuntimeEntry;
+    case MethodRecognizer::kDoubleFloor:
+      return kFloorRuntimeEntry;
+    case MethodRecognizer::kDoubleCeil:
+      return kCeilRuntimeEntry;
+    case MethodRecognizer::kDoublePow:
+      return kPowRuntimeEntry;
+    default:
+      UNREACHABLE();
+  }
+  return kPowRuntimeEntry;
+}
+
+
 #undef __
 
 }  // namespace dart