Remove padding in v8::internal::compiler::Constant class

src/compiler/instruction.h

Index: src/compiler/instruction.h
diff --git a/src/compiler/instruction.h b/src/compiler/instruction.h
index bbcd03d3ec86cda23f2220ceb49de72667d3fd23..5cb28627dea33b07539a0efd63b4388d1261fac9 100644
--- a/src/compiler/instruction.h
+++ b/src/compiler/instruction.h
@@ -1109,12 +1109,12 @@ class V8_EXPORT_PRIVATE Constant final {
 
  private:
   Type type_;
-  int64_t value_;
 #if V8_TARGET_ARCH_32_BIT
   RelocInfo::Mode rmode_ = RelocInfo::NONE32;
 #else
   RelocInfo::Mode rmode_ = RelocInfo::NONE64;
 #endif
+  int64_t value_;
 };