X87: [turbofan] Add TruncateFloat32ToUint32 operator to Turbofan.

src/compiler/x87/code-generator-x87.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/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 1191 matching lines @@
     case kX87Float32ToInt32: {
       if (!instr->InputAt(0)->IsDoubleRegister()) {
         __ fld_s(i.InputOperand(0));
       }
       __ TruncateX87TOSToI(i.OutputRegister(0));
       if (!instr->InputAt(0)->IsDoubleRegister()) {
         __ fstp(0);
       }
       break;
     }
+    case kX87Float32ToUint32: {
+      if (!instr->InputAt(0)->IsDoubleRegister()) {
+        __ fld_s(i.InputOperand(0));
+      }
+      Label success;
+      __ TruncateX87TOSToI(i.OutputRegister(0));
+      __ test(i.OutputRegister(0), i.OutputRegister(0));
+      __ j(positive, &success);
+      __ push(Immediate(INT32_MIN));
+      __ fild_s(Operand(esp, 0));
+      __ lea(esp, Operand(esp, kPointerSize));
+      __ faddp();
+      __ TruncateX87TOSToI(i.OutputRegister(0));
+      __ or_(i.OutputRegister(0), Immediate(0x80000000));
+      __ bind(&success);
+      if (!instr->InputAt(0)->IsDoubleRegister()) {
+        __ fstp(0);
+      }
+      break;
+    }
     case kX87Float64ToInt32: {
       if (!instr->InputAt(0)->IsDoubleRegister()) {
         __ fld_d(i.InputOperand(0));
       }
       __ TruncateX87TOSToI(i.OutputRegister(0));
       if (!instr->InputAt(0)->IsDoubleRegister()) {
         __ fstp(0);
       }
       break;
     }
@@ skipping 1002 matching lines @@
 void CodeGenerator::EnsureSpaceForLazyDeopt() {
   is_handler_entry_point = true;
   DoEnsureSpaceForLazyDeopt(info(), masm(), last_lazy_deopt_pc_);
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8