[x86] Slow case of TruncateDoubleToI shouldn't be inline.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 137 matching lines @@
  public:
   OutOfLineLoadFloat(CodeGenerator* gen, XMMRegister result)
       : OutOfLineCode(gen), result_(result) {}
 
   void Generate() FINAL { __ pcmpeqd(result_, result_); }
 
  private:
   XMMRegister const result_;
 };
 
+
+class OutOfLineTruncateDoubleToI FINAL : public OutOfLineCode {
+ public:
+  OutOfLineTruncateDoubleToI(CodeGenerator* gen, Register result,
+                             XMMRegister input)
+      : OutOfLineCode(gen), result_(result), input_(input) {}
+
+  void Generate() FINAL {
+    __ subp(rsp, Immediate(kDoubleSize));
+    __ movsd(MemOperand(rsp, 0), input_);
+    __ SlowTruncateToI(result_, rsp, 0);
+    __ addp(rsp, Immediate(kDoubleSize));
+  }
+
+ private:
+  Register const result_;
+  XMMRegister const input_;
+};
+
 }  // namespace
 
 
 #define ASSEMBLE_UNOP(asm_instr)         \
   do {                                   \
     if (instr->Output()->IsRegister()) { \
       __ asm_instr(i.OutputRegister());  \
     } else {                             \
       __ asm_instr(i.OutputOperand());   \
     }                                    \
@@ skipping 180 matching lines @@
       break;
     case kArchNop:
       // don't emit code for nops.
       break;
     case kArchRet:
       AssembleReturn();
       break;
     case kArchStackPointer:
       __ movq(i.OutputRegister(), rsp);
       break;
-    case kArchTruncateDoubleToI:
-      __ TruncateDoubleToI(i.OutputRegister(), i.InputDoubleRegister(0));
+    case kArchTruncateDoubleToI: {
+      auto result = i.OutputRegister();
+      auto input = i.InputDoubleRegister(0);
+      auto ool = new (zone()) OutOfLineTruncateDoubleToI(this, result, input);
+      __ cvttsd2siq(result, input);
+      __ cmpq(result, Immediate(1));
+      __ j(overflow, ool->entry());
+      __ bind(ool->exit());
       break;
+    }
     case kX64Add32:
       ASSEMBLE_BINOP(addl);
       break;
     case kX64Add:
       ASSEMBLE_BINOP(addq);
       break;
     case kX64Sub32:
       ASSEMBLE_BINOP(subl);
       break;
     case kX64Sub:
@@ skipping 835 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8