[v8-dev] ARM: safepoints frame optimization

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index cf14172b564c0534831682929a2653d5756060cc..ddbfa08f3f142e84a95bd2caa41f328a8fafbc4d 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -520,6 +520,8 @@ const Instr kLdrStrOffsetMask = 0x00000fff;
 Assembler::Assembler(Isolate* isolate, void* buffer, int buffer_size)
     : AssemblerBase(isolate, buffer, buffer_size),
       recorded_ast_id_(TypeFeedbackId::None()),
+      registers_mask_(kRegListEmpty),
+      double_registers_mask_(kRegListEmpty),
       positions_recorder_(this) {
   reloc_info_writer.Reposition(buffer_ + buffer_size_, pc_);
   num_pending_32_bit_reloc_info_ = 0;
@@ -551,6 +553,8 @@ void Assembler::GetCode(CodeDesc* desc) {
   desc->instr_size = pc_offset();
   desc->reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos();
   desc->origin = this;
+  desc->registers_mask = registers_mask_;
+  desc->double_registers_mask = double_registers_mask_;
 }