TF: Clear upper bits of ConvertFloat64ToUint32 because Win64.

src/compiler/x64/linkage-x64.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/v8.h"
 
 #include "src/assembler.h"
 #include "src/code-stubs.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/linkage-impl.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
+#ifdef _WIN64
+const bool kWin64 = true;
+#else
+const bool kWin64 = false;
+#endif
+
 struct LinkageHelperTraits {
   static Register ReturnValueReg() { return rax; }
   static Register ReturnValue2Reg() { return rdx; }
   static Register JSCallFunctionReg() { return rdi; }
   static Register ContextReg() { return rsi; }
   static Register RuntimeCallFunctionReg() { return rbx; }
   static Register RuntimeCallArgCountReg() { return rax; }
-#ifdef _WIN64
   static RegList CCalleeSaveRegisters() {
-    return rbx.bit() | rdi.bit() | rsi.bit() | r12.bit() | r13.bit() |
-           r14.bit() | r15.bit();
+    if (kWin64) {
+      return rbx.bit() | rdi.bit() | rsi.bit() | r12.bit() | r13.bit() |
+             r14.bit() | r15.bit();
+    } else {
+      return rbx.bit() | r12.bit() | r13.bit() | r14.bit() | r15.bit();
+    }
   }
   static Register CRegisterParameter(int i) {
-    static Register register_parameters[] = {rcx, rdx, r8, r9};
-    return register_parameters[i];
+    if (kWin64) {
+      static Register register_parameters[] = {rcx, rdx, r8, r9};
+      return register_parameters[i];
+    } else {
+      static Register register_parameters[] = {rdi, rsi, rdx, rcx, r8, r9};
+      return register_parameters[i];
+    }
   }
-  static int CRegisterParametersLength() { return 4; }
-#else
-  static RegList CCalleeSaveRegisters() {
-    return rbx.bit() | r12.bit() | r13.bit() | r14.bit() | r15.bit();
-  }
-  static Register CRegisterParameter(int i) {
-    static Register register_parameters[] = {rdi, rsi, rdx, rcx, r8, r9};
-    return register_parameters[i];
-  }
-  static int CRegisterParametersLength() { return 6; }
-#endif
+  static int CRegisterParametersLength() { return kWin64 ? 4 : 6; }
 };
 
 
 CallDescriptor* Linkage::GetJSCallDescriptor(int parameter_count, Zone* zone) {
   return LinkageHelper::GetJSCallDescriptor<LinkageHelperTraits>(
       zone, parameter_count);
 }
 
 
 CallDescriptor* Linkage::GetRuntimeCallDescriptor(
@@ skipping 14 matching lines @@
 
 CallDescriptor* Linkage::GetSimplifiedCDescriptor(
     Zone* zone, int num_params, MachineRepresentation return_type,
     const MachineRepresentation* param_types) {
   return LinkageHelper::GetSimplifiedCDescriptor<LinkageHelperTraits>(
       zone, num_params, return_type, param_types);
 }
 }
 }
 }  // namespace v8::internal::compiler