Disentangle assembler from isolate.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 4da15342c2b8c17b21502f1742546fcf451f4164..bb69cff8ab1eacb96e044e04dc12bae6c1a00054 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -207,18 +207,18 @@ uint32_t RelocInfo::wasm_function_table_size_reference() {
 }
 
 void RelocInfo::unchecked_update_wasm_memory_reference(
-    Address address, ICacheFlushMode icache_flush_mode) {
+    Isolate* isolate, Address address, ICacheFlushMode icache_flush_mode) {
   Memory::Address_at(pc_) = address;
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
-    Assembler::FlushICache(isolate_, pc_, sizeof(Address));
+    Assembler::FlushICache(isolate, pc_, sizeof(Address));
   }
 }
 
-void RelocInfo::unchecked_update_wasm_size(uint32_t size,
+void RelocInfo::unchecked_update_wasm_size(Isolate* isolate, uint32_t size,
                                            ICacheFlushMode icache_flush_mode) {
   Memory::uint32_at(pc_) = size;
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
-    Assembler::FlushICache(isolate_, pc_, sizeof(uint32_t));
+    Assembler::FlushICache(isolate, pc_, sizeof(uint32_t));
   }
 }
 
@@ -306,8 +306,8 @@ Register Operand::reg() const {
 #define EMIT(x)                                 \
   *pc_++ = (x)
 
-Assembler::Assembler(Isolate* isolate, void* buffer, int buffer_size)
-    : AssemblerBase(isolate, buffer, buffer_size) {
+Assembler::Assembler(IsolateData isolate_data, void* buffer, int buffer_size)
+    : AssemblerBase(isolate_data, buffer, buffer_size) {
 // Clear the buffer in debug mode unless it was provided by the
 // caller in which case we can't be sure it's okay to overwrite
 // existing code in it; see CodePatcher::CodePatcher(...).
@@ -2973,7 +2973,7 @@ void Assembler::GrowBuffer() {
   // they must ensure that kMaximalBufferSize is not too large.
   if (desc.buffer_size > kMaximalBufferSize ||
       static_cast<size_t>(desc.buffer_size) >
-          isolate()->heap()->MaxOldGenerationSize()) {
+          isolate_data().max_old_generation_size_) {
     V8::FatalProcessOutOfMemory("Assembler::GrowBuffer");
   }
 
@@ -3116,7 +3116,7 @@ void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) {
       !serializer_enabled() && !emit_debug_code()) {
     return;
   }
-  RelocInfo rinfo(isolate(), pc_, rmode, data, NULL);
+  RelocInfo rinfo(pc_, rmode, data, NULL);
   reloc_info_writer.Write(&rinfo);
 }