DBC: Misc double instructions

runtime/vm/intermediate_language_dbc.cc

 // Copyright (c) 2016, 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/globals.h"  // Needed here to get TARGET_ARCH_DBC.
 #if defined(TARGET_ARCH_DBC)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/cpu.h"
@@ skipping 18 matching lines @@
 DECLARE_FLAG(int, optimization_counter_threshold);
 
 // List of instructions that are still unimplemented by DBC backend.
 #define FOR_EACH_UNIMPLEMENTED_INSTRUCTION(M)                                  \
   M(LoadCodeUnits)                                                             \
   M(LoadUntagged)                                                              \
   M(AllocateUninitializedContext)                                              \
   M(BinaryInt32Op)                                                             \
   M(Int32ToDouble)                                                             \
   M(DoubleToInteger)                                                           \
-  M(DoubleToSmi)                                                               \
   M(DoubleToDouble)                                                            \
   M(DoubleToFloat)                                                             \
   M(FloatToDouble)                                                             \
-  M(MathUnary)                                                                 \
-  M(MathMinMax)                                                                \
   M(BoxInt64)                                                                  \
   M(InvokeMathCFunction)                                                       \
   M(MergedMath)                                                                \
   M(GuardFieldClass)                                                           \
   M(GuardFieldLength)                                                          \
   M(IfThenElse)                                                                \
   M(ExtractNthOutput)                                                          \
   M(BinaryUint32Op)                                                            \
   M(ShiftUint32Op)                                                             \
   M(UnaryUint32Op)                                                             \
@@ skipping 1223 matching lines @@
     __ IfEqNull(box);
     compiler->EmitDeopt(GetDeoptId(), ICData::kDeoptCheckClass);
     __ UnboxDouble(result, box);
   } else {
     __ CheckedUnboxDouble(result, box);
     compiler->EmitDeopt(GetDeoptId(), ICData::kDeoptCheckClass);
   }
 }
 
 
+EMIT_NATIVE_CODE(DoubleToSmi, 1, Location::RequiresRegister()) {
+  const Register value = locs()->in(0).reg();
+  const Register result = locs()->out(0).reg();
+  __ DoubleToSmi(result, value);
+  compiler->EmitDeopt(deopt_id(), ICData::kDeoptDoubleToSmi);
+}
+
+
 EMIT_NATIVE_CODE(SmiToDouble, 1, Location::RequiresRegister()) {
   const Register value = locs()->in(0).reg();
   const Register result = locs()->out(0).reg();
   __ SmiToDouble(result, value);
 }
 
 
 EMIT_NATIVE_CODE(BinaryDoubleOp, 2, Location::RequiresRegister()) {
   const Register left = locs()->in(0).reg();
   const Register right = locs()->in(1).reg();
   const Register result = locs()->out(0).reg();
   switch (op_kind()) {
     case Token::kADD: __ DAdd(result, left, right); break;
     case Token::kSUB: __ DSub(result, left, right); break;
     case Token::kMUL: __ DMul(result, left, right); break;
     case Token::kDIV: __ DDiv(result, left, right); break;
     default: UNREACHABLE();
   }
 }
 
 
 EMIT_NATIVE_CODE(UnaryDoubleOp, 1, Location::RequiresRegister()) {
   const Register value = locs()->in(0).reg();
   const Register result = locs()->out(0).reg();
   __ DNeg(result, value);
 }
 
 
+EMIT_NATIVE_CODE(MathUnary, 1, Location::RequiresRegister()) {
+  if (kind() == MathUnaryInstr::kSqrt) {
+    const Register value = locs()->in(0).reg();
+    const Register result = locs()->out(0).reg();
+    __ DSqrt(result, value);
+  } else if (kind() == MathUnaryInstr::kDoubleSquare) {
+    const Register value = locs()->in(0).reg();
+    const Register result = locs()->out(0).reg();
+    __ DMul(result, value, value);
+  } else {
+    Unsupported(compiler);
+    UNREACHABLE();
+  }
+}
+
+
+EMIT_NATIVE_CODE(MathMinMax, 2, Location::RequiresRegister()) {
+  ASSERT((op_kind() == MethodRecognizer::kMathMin) ||
+         (op_kind() == MethodRecognizer::kMathMax));
+  const Register left = locs()->in(0).reg();
+  const Register right = locs()->in(1).reg();
+  const Register result = locs()->out(0).reg();
+  if (result_cid() == kDoubleCid) {
+    if (op_kind() == MethodRecognizer::kMathMin) {
+      __ DMin(result, left, right);
+    } else {
+      __ DMax(result, left, right);
+    }
+  } else {
+    ASSERT(result_cid() == kSmiCid);
+    if (op_kind() == MethodRecognizer::kMathMin) {
+      __ Min(result, left, right);
+    } else {
+      __ Max(result, left, right);
+    }
+  }
+}
+
+
 static Token::Kind FlipCondition(Token::Kind kind) {
   switch (kind) {
     case Token::kEQ: return Token::kNE;
     case Token::kNE: return Token::kEQ;
     case Token::kLT: return Token::kGTE;
     case Token::kGT: return Token::kLTE;
     case Token::kLTE: return Token::kGT;
     case Token::kGTE: return Token::kLT;
     default:
       UNREACHABLE();
@@ skipping 155 matching lines @@
   __ IfULe(length, index);
   compiler->EmitDeopt(deopt_id(),
                       ICData::kDeoptCheckArrayBound,
                       (generalized_ ? ICData::kGeneralized : 0) |
                       (licm_hoisted_ ? ICData::kHoisted : 0));
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_DBC