Revert "Arm64: Ensure that csp is always aligned to 16 byte values even if jssp is not." and "Arm64…

src/cpu.cc

Index: src/cpu.cc
diff --git a/src/cpu.cc b/src/cpu.cc
index 3baae64f6d74b98d0917ae4e1829b4eb64a2c5cb..c600eda10b8d45eec3ded9609d910800c15eee19 100644
--- a/src/cpu.cc
+++ b/src/cpu.cc
@@ -56,7 +56,7 @@ static V8_INLINE void __cpuid(int cpu_info[4], int info_type) {
 
 #endif  // !V8_LIBC_MSVCRT
 
-#elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_ARM64 || V8_HOST_ARCH_MIPS
+#elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS
 
 #if V8_OS_LINUX
 
@@ -464,32 +464,6 @@ CPU::CPU() : stepping_(0),
   has_fpu_ = HasListItem(cpu_model, "FPU");
   delete[] cpu_model;
 
-#elif V8_HOST_ARCH_ARM64
-
-  CPUInfo cpu_info;
-
-  // Extract implementor from the "CPU implementer" field.
-  char* implementer = cpu_info.ExtractField("CPU implementer");
-  if (implementer != NULL) {
-    char* end ;
-    implementer_ = strtol(implementer, &end, 0);
-    if (end == implementer) {
-      implementer_ = 0;
-    }
-    delete[] implementer;
-  }
-
-  // Extract part number from the "CPU part" field.
-  char* part = cpu_info.ExtractField("CPU part");
-  if (part != NULL) {
-    char* end ;
-    part_ = strtol(part, &end, 0);
-    if (end == part) {
-      part_ = 0;
-    }
-    delete[] part;
-  }
-
 #endif
 }