Enable ARMv8 32-bit build.

test/cctest/test-assembler-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1957 matching lines @@
     CHECK_VRINT(-0.5, -1.0, -0.0, -1.0, -0.0, -0.0)
     CHECK_VRINT(-0.6, -1.0, -1.0, -1.0, -0.0, -0.0)
     CHECK_VRINT(-1.1, -1.0, -1.0, -2.0, -1.0, -1.0)
     CHECK_VRINT(0.5, 1.0, 0.0, 0.0, 1.0, 0.0)
     CHECK_VRINT(0.6, 1.0, 1.0, 0.0, 1.0, 0.0)
     CHECK_VRINT(1.1, 1.0, 1.0, 1.0, 2.0, 1.0)
     double inf = std::numeric_limits<double>::infinity();
     CHECK_VRINT(inf, inf, inf, inf, inf, inf)
     CHECK_VRINT(-inf, -inf, -inf, -inf, -inf, -inf)
     CHECK_VRINT(-0.0, -0.0, -0.0, -0.0, -0.0, -0.0)
+
+    // Check NaN propagation.
     double nan = std::numeric_limits<double>::quiet_NaN();
-    CHECK_VRINT(nan, nan, nan, nan, nan, nan)
+    t.input = nan;
+    dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    CHECK_EQ(bit_cast<int64_t>(nan), bit_cast<int64_t>(t.ar));
+    CHECK_EQ(bit_cast<int64_t>(nan), bit_cast<int64_t>(t.nr));
+    CHECK_EQ(bit_cast<int64_t>(nan), bit_cast<int64_t>(t.mr));
+    CHECK_EQ(bit_cast<int64_t>(nan), bit_cast<int64_t>(t.pr));
+    CHECK_EQ(bit_cast<int64_t>(nan), bit_cast<int64_t>(t.zr));
 
 #undef CHECK_VRINT
   }
 }
 
 
 TEST(regress4292_b) {
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   HandleScope scope(isolate);
@@ skipping 44 matching lines @@
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
   __ mov(r0, Operand(isolate->factory()->infinity_value()));
   __ BlockConstPoolFor(1019);
   for (int i = 0; i < 1019; ++i) __ nop();
   __ vldr(d0, MemOperand(r0, 0));
 }
 
 #undef __