Fix issues with Arm's use of embedded constant pools

src/ppc/assembler-ppc.cc

Index: src/ppc/assembler-ppc.cc
diff --git a/src/ppc/assembler-ppc.cc b/src/ppc/assembler-ppc.cc
index cce578e9f6cde0c2519afdf5d72311a2b64668ce..38c7fd82b7bbe096725621d39a531f973491ed80 100644
--- a/src/ppc/assembler-ppc.cc
+++ b/src/ppc/assembler-ppc.cc
@@ -244,17 +244,9 @@ void Assembler::GetCode(CodeDesc* desc) {
 
 
 void Assembler::Align(int m) {
-#if V8_TARGET_ARCH_PPC64
-  DCHECK(m >= 4 && base::bits::IsPowerOfTwo64(m));
-#else
   DCHECK(m >= 4 && base::bits::IsPowerOfTwo32(m));
-#endif
-  // First ensure instruction alignment
-  while (pc_offset() & (kInstrSize - 1)) {
-    db(0);
-  }
-  // Then pad to requested alignedment with nops
-  while (pc_offset() & (m - 1)) {
+  DCHECK((pc_offset() & (kInstrSize - 1)) == 0);
+  while ((pc_offset() & (m - 1)) != 0) {
     nop();
   }
 }