Add floor, ceil, round (truncate) instructions for ia32, x64 (if SSE4.1) and

src/compiler/instruction-selector.cc

 // Copyright 2014 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/instruction-selector.h"
 
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/pipeline.h"
@@ skipping 536 matching lines @@
       return kMachFloat32;
     case IrOpcode::kTruncateFloat64ToInt32:
     case IrOpcode::kTruncateInt64ToInt32:
       return kMachInt32;
     case IrOpcode::kFloat64Add:
     case IrOpcode::kFloat64Sub:
     case IrOpcode::kFloat64Mul:
     case IrOpcode::kFloat64Div:
     case IrOpcode::kFloat64Mod:
     case IrOpcode::kFloat64Sqrt:
+    case IrOpcode::kFloat64Floor:
+    case IrOpcode::kFloat64Ceil:
+    case IrOpcode::kFloat64RoundTruncate:
+    case IrOpcode::kFloat64RoundTiesAway:
       return kMachFloat64;
     case IrOpcode::kFloat64Equal:
     case IrOpcode::kFloat64LessThan:
     case IrOpcode::kFloat64LessThanOrEqual:
       return kMachBool;
     default:
       V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
                node->opcode(), node->op()->mnemonic(), node->id());
   }
   return kMachNone;
@@ skipping 169 matching lines @@
     case IrOpcode::kFloat64Mod:
       return MarkAsDouble(node), VisitFloat64Mod(node);
     case IrOpcode::kFloat64Sqrt:
       return MarkAsDouble(node), VisitFloat64Sqrt(node);
     case IrOpcode::kFloat64Equal:
       return VisitFloat64Equal(node);
     case IrOpcode::kFloat64LessThan:
       return VisitFloat64LessThan(node);
     case IrOpcode::kFloat64LessThanOrEqual:
       return VisitFloat64LessThanOrEqual(node);
+    case IrOpcode::kFloat64Floor:
+      return MarkAsDouble(node), VisitFloat64Floor(node);
+    case IrOpcode::kFloat64Ceil:
+      return MarkAsDouble(node), VisitFloat64Ceil(node);
+    case IrOpcode::kFloat64RoundTruncate:
+      return MarkAsDouble(node), VisitFloat64RoundTruncate(node);
+    case IrOpcode::kFloat64RoundTiesAway:
+      return MarkAsDouble(node), VisitFloat64RoundTiesAway(node);
     case IrOpcode::kLoadStackPointer:
       return VisitLoadStackPointer(node);
     default:
-      V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
-               node->opcode(), node->op()->mnemonic(), node->id());
+      UnsupportedOperator(node);
+      break;
   }
 }
 
 
+void InstructionSelector::UnsupportedOperator(Node* node) {
+  V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
+           node->opcode(), node->op()->mnemonic(), node->id());
+}
+

[Benedikt Meurer, 2014/10/26 12:48:05]

Nit: missing newline.

[sigurds, 2014/10/28 12:47:22]

Done.

 #if V8_TURBOFAN_BACKEND
 
 void InstructionSelector::VisitTruncateFloat64ToInt32(Node* node) {
   OperandGenerator g(this);
   Emit(kArchTruncateDoubleToI, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitLoadStackPointer(Node* node) {
@@ skipping 275 matching lines @@
 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
                                       BasicBlock* fbranch) {
   UNIMPLEMENTED();
 }
 
 #endif  // !V8_TURBOFAN_BACKEND
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8