Fix warnings on Win64.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 156 matching lines @@
 
 
 void RelocInfoWriter::WriteTaggedPC(uint32_t pc_delta, int tag) {
   // Write a byte of tagged pc-delta, possibly preceded by var. length pc-jump.
   pc_delta = WriteVariableLengthPCJump(pc_delta);
   *--pos_ = pc_delta << kTagBits | tag;
 }
 
 
 void RelocInfoWriter::WriteTaggedData(intptr_t data_delta, int tag) {
-  *--pos_ = data_delta << kPositionTypeTagBits | tag;
+  *--pos_ = static_cast<byte>(data_delta << kPositionTypeTagBits | tag);
 }
 
 
 void RelocInfoWriter::WriteExtraTag(int extra_tag, int top_tag) {
-  *--pos_ = top_tag << (kTagBits + kExtraTagBits) |
-            extra_tag << kTagBits |
-            kDefaultTag;
+  *--pos_ = static_cast<int>(top_tag << (kTagBits + kExtraTagBits) |
+                             extra_tag << kTagBits |
+                             kDefaultTag);
 }
 
 
 void RelocInfoWriter::WriteExtraTaggedPC(uint32_t pc_delta, int extra_tag) {
   // Write two-byte tagged pc-delta, possibly preceded by var. length pc-jump.
   pc_delta = WriteVariableLengthPCJump(pc_delta);
   WriteExtraTag(extra_tag, 0);
   *--pos_ = pc_delta;
 }
 
 
 void RelocInfoWriter::WriteExtraTaggedData(intptr_t data_delta, int top_tag) {
   WriteExtraTag(kDataJumpTag, top_tag);
   for (int i = 0; i < kIntptrSize; i++) {
-    *--pos_ = data_delta;
+    *--pos_ = static_cast<byte>(data_delta);
   // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
     data_delta = data_delta >> kBitsPerByte;
   }
 }
 
 
 void RelocInfoWriter::Write(const RelocInfo* rinfo) {
 #ifdef DEBUG
   byte* begin_pos = pos_;
 #endif
   Counters::reloc_info_count.Increment();
   ASSERT(rinfo->pc() - last_pc_ >= 0);
   ASSERT(RelocInfo::NUMBER_OF_MODES < kMaxRelocModes);
   // Use unsigned delta-encoding for pc.
-  uint32_t pc_delta = rinfo->pc() - last_pc_;
+  uint32_t pc_delta = static_cast<uint32_t>(rinfo->pc() - last_pc_);
   RelocInfo::Mode rmode = rinfo->rmode();
 
   // The two most common modes are given small tags, and usually fit in a byte.
   if (rmode == RelocInfo::EMBEDDED_OBJECT) {
     WriteTaggedPC(pc_delta, kEmbeddedObjectTag);
   } else if (rmode == RelocInfo::CODE_TARGET) {
     WriteTaggedPC(pc_delta, kCodeTargetTag);
   } else if (RelocInfo::IsPosition(rmode)) {
     // Use signed delta-encoding for data.
     intptr_t data_delta = rinfo->data() - last_data_;
@@ skipping 515 matching lines @@
   return ExternalReference(Redirect(FUNCTION_ADDR(Debug::Break)));
 }
 
 
 ExternalReference ExternalReference::debug_step_in_fp_address() {
   return ExternalReference(Debug::step_in_fp_addr());
 }
 #endif
 
 } }  // namespace v8::internal