A64: Synchronize with r17441.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index bc12b9c7c7dee63eb47253363e48d3bf90cf6144..0edfe5b67a0f518cdeeb3a453d1029d91d0af3b5 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -102,6 +102,7 @@ struct DoubleConstant BASE_EMBEDDED {
   double negative_infinity;
   double canonical_non_hole_nan;
   double the_hole_nan;
+  double uint32_bias;
 };
 
 static DoubleConstant double_constants;
@@ -213,19 +214,17 @@ CpuFeatureScope::~CpuFeatureScope() {
 // Implementation of PlatformFeatureScope
 
 PlatformFeatureScope::PlatformFeatureScope(CpuFeature f)
-    : old_supported_(CpuFeatures::supported_),
-      old_found_by_runtime_probing_only_(
-          CpuFeatures::found_by_runtime_probing_only_) {
+    : old_cross_compile_(CpuFeatures::cross_compile_) {
+  // CpuFeatures is a global singleton, therefore this is only safe in
+  // single threaded code.
+  ASSERT(Serializer::enabled());
   uint64_t mask = static_cast<uint64_t>(1) << f;
-  CpuFeatures::supported_ |= mask;
-  CpuFeatures::found_by_runtime_probing_only_ &= ~mask;
+  CpuFeatures::cross_compile_ |= mask;
 }
 
 
 PlatformFeatureScope::~PlatformFeatureScope() {
-  CpuFeatures::supported_ = old_supported_;
-  CpuFeatures::found_by_runtime_probing_only_ =
-      old_found_by_runtime_probing_only_;
+  CpuFeatures::cross_compile_ = old_cross_compile_;
 }
 
 
@@ -913,6 +912,8 @@ void ExternalReference::SetUp() {
   double_constants.canonical_non_hole_nan = OS::nan_value();
   double_constants.the_hole_nan = BitCast<double>(kHoleNanInt64);
   double_constants.negative_infinity = -V8_INFINITY;
+  double_constants.uint32_bias =
+    static_cast<double>(static_cast<uint32_t>(0xFFFFFFFF)) + 1;
 
   math_exp_data_mutex = new Mutex();
 }
@@ -1090,6 +1091,13 @@ ExternalReference ExternalReference::get_make_code_young_function(
 }
 
 
+ExternalReference ExternalReference::get_mark_code_as_executed_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(
+      isolate, FUNCTION_ADDR(Code::MarkCodeAsExecuted)));
+}
+
+
 ExternalReference ExternalReference::date_cache_stamp(Isolate* isolate) {
   return ExternalReference(isolate->date_cache()->stamp_address());
 }
@@ -1338,6 +1346,20 @@ ExternalReference ExternalReference::address_of_the_hole_nan() {
 }
 
 
+ExternalReference ExternalReference::record_object_allocation_function(
+  Isolate* isolate) {
+  return ExternalReference(
+      Redirect(isolate,
+               FUNCTION_ADDR(HeapProfiler::RecordObjectAllocationFromMasm)));
+}
+
+
+ExternalReference ExternalReference::address_of_uint32_bias() {
+  return ExternalReference(
+      reinterpret_cast<void*>(&double_constants.uint32_bias));
+}
+
+
 #ifndef V8_INTERPRETED_REGEXP
 
 ExternalReference ExternalReference::re_check_stack_guard_state(