Arm64: Remove forced csp alignment to 16 byte values for Nvidia chips.

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 1290 matching lines @@
   ldp(d10, d11, tos);
   ldp(d12, d13, tos);
   ldp(d14, d15, tos);
 }
 
 
 void MacroAssembler::AssertStackConsistency() {
   // Avoid emitting code when !use_real_abort() since non-real aborts cause too
   // much code to be generated.
   if (emit_debug_code() && use_real_aborts()) {
-    if (csp.Is(StackPointer()) || CpuFeatures::IsSupported(ALWAYS_ALIGN_CSP)) {
+    if (csp.Is(StackPointer())) {
       // Always check the alignment of csp if ALWAYS_ALIGN_CSP is true.  We
       // can't check the alignment of csp without using a scratch register (or
       // clobbering the flags), but the processor (or simulator) will abort if
       // it is not properly aligned during a load.
       ldr(xzr, MemOperand(csp, 0));
     }
     if (FLAG_enable_slow_asserts && !csp.Is(StackPointer())) {
       Label ok;
       // Check that csp <= StackPointer(), preserving all registers and NZCV.
       sub(StackPointer(), csp, StackPointer());
@@ skipping 4066 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64