MIPS: First step to cleanup the power-of-2 mess.

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 655ae2c3e2f129615c9a3f7ccd60f6308fd76590..42f6f56846b334186df7ceef702c192a9b53b9bc 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -8,6 +8,7 @@
 
 #if V8_TARGET_ARCH_MIPS
 
+#include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/cpu-profiler.h"
@@ -4961,7 +4962,7 @@ void MacroAssembler::EnterExitFrame(bool save_doubles,
     // The stack  must be allign to 0 modulo 8 for stores with sdc1.
     DCHECK(kDoubleSize == frame_alignment);
     if (frame_alignment > 0) {
-      DCHECK(IsPowerOf2(frame_alignment));
+      DCHECK(base::bits::IsPowerOfTwo32(frame_alignment));
       And(sp, sp, Operand(-frame_alignment));  // Align stack.
     }
     int space = FPURegister::kMaxNumRegisters * kDoubleSize;
@@ -4979,7 +4980,7 @@ void MacroAssembler::EnterExitFrame(bool save_doubles,
   DCHECK(stack_space >= 0);
   Subu(sp, sp, Operand((stack_space + 2) * kPointerSize));
   if (frame_alignment > 0) {
-    DCHECK(IsPowerOf2(frame_alignment));
+    DCHECK(base::bits::IsPowerOfTwo32(frame_alignment));
     And(sp, sp, Operand(-frame_alignment));  // Align stack.
   }
 
@@ -5074,7 +5075,7 @@ void MacroAssembler::AssertStackIsAligned() {
 
       if (frame_alignment > kPointerSize) {
         Label alignment_as_expected;
-        DCHECK(IsPowerOf2(frame_alignment));
+        DCHECK(base::bits::IsPowerOfTwo32(frame_alignment));
         andi(at, sp, frame_alignment_mask);
         Branch(&alignment_as_expected, eq, at, Operand(zero_reg));
         // Don't use Check here, as it will call Runtime_Abort re-entering here.
@@ -5475,7 +5476,7 @@ void MacroAssembler::PrepareCallCFunction(int num_reg_arguments,
     // and the original value of sp.
     mov(scratch, sp);
     Subu(sp, sp, Operand((stack_passed_arguments + 1) * kPointerSize));
-    DCHECK(IsPowerOf2(frame_alignment));
+    DCHECK(base::bits::IsPowerOfTwo32(frame_alignment));
     And(sp, sp, Operand(-frame_alignment));
     sw(scratch, MemOperand(sp, stack_passed_arguments * kPointerSize));
   } else {
@@ -5532,7 +5533,7 @@ void MacroAssembler::CallCFunctionHelper(Register function,
     int frame_alignment = base::OS::ActivationFrameAlignment();
     int frame_alignment_mask = frame_alignment - 1;
     if (frame_alignment > kPointerSize) {
-      DCHECK(IsPowerOf2(frame_alignment));
+      DCHECK(base::bits::IsPowerOfTwo32(frame_alignment));
       Label alignment_as_expected;
       And(at, sp, Operand(frame_alignment_mask));
       Branch(&alignment_as_expected, eq, at, Operand(zero_reg));