Fix issues with Arm's use of embedded constant pools

src/x87/assembler-x87.cc

Index: src/x87/assembler-x87.cc
diff --git a/src/x87/assembler-x87.cc b/src/x87/assembler-x87.cc
index 1f572be423c2d98f210fb00bc8adeefc7e5b68d1..4175d80e938a59c1353aac8181843fec9fb31a7c 100644
--- a/src/x87/assembler-x87.cc
+++ b/src/x87/assembler-x87.cc
@@ -263,6 +263,14 @@ void Assembler::Align(int m) {
 }
 
 
+void Assembler::DataAlign(int m) {
+  DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
+  while ((pc_offset() & (m - 1)) != 0) {
+    db(0);
+  }
+}
+
+
 bool Assembler::IsNop(Address addr) {
   Address a = addr;
   while (*a == 0x66) a++;