convert a bunch of DCHECKs to STATIC_ASSERT

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index 57b6c028fbed4f47197dfd9dd9ad77924b4dcd06..4ece267a99a126c7bd390c1f70b3f594b53e49bb 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -4121,7 +4121,7 @@ void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm,
 
     Register entity_name = scratch0;
     // Having undefined at this place means the name is not contained.
-    DCHECK_EQ(kSmiTagSize, 1);
+    STATIC_ASSERT(kSmiTagSize == 1);
     Register tmp = properties;
 
     __ dsll(scratch0, index, kPointerSizeLog2);
@@ -4211,8 +4211,8 @@ void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm,
     __ dsrl(scratch2, scratch2, Name::kHashShift);
     __ And(scratch2, scratch1, scratch2);
 
-    // Scale the index by multiplying by the element size.
-    DCHECK(NameDictionary::kEntrySize == 3);
+    // Scale the index by multiplying by the entry size.
+    STATIC_ASSERT(NameDictionary::kEntrySize == 3);
     // scratch2 = scratch2 * 3.
 
     __ dsll(at, scratch2, 1);
@@ -4299,14 +4299,14 @@ void NameDictionaryLookupStub::Generate(MacroAssembler* masm) {
     __ And(index, mask, index);
 
     // Scale the index by multiplying by the entry size.
-    DCHECK(NameDictionary::kEntrySize == 3);
+    STATIC_ASSERT(NameDictionary::kEntrySize == 3);
     // index *= 3.
     __ mov(at, index);
     __ dsll(index, index, 1);
     __ Daddu(index, index, at);
 
 
-    DCHECK_EQ(kSmiTagSize, 1);
+    STATIC_ASSERT(kSmiTagSize == 1);
     __ dsll(index, index, kPointerSizeLog2);
     __ Daddu(index, index, dictionary);
     __ ld(entry_key, FieldMemOperand(index, kElementsStartOffset));
@@ -5029,12 +5029,12 @@ static void CreateArrayDispatchOneArgument(MacroAssembler* masm,
   // sp[0] - last argument
   Label normal_sequence;
   if (mode == DONT_OVERRIDE) {
-    DCHECK(FAST_SMI_ELEMENTS == 0);
-    DCHECK(FAST_HOLEY_SMI_ELEMENTS == 1);
-    DCHECK(FAST_ELEMENTS == 2);
-    DCHECK(FAST_HOLEY_ELEMENTS == 3);
-    DCHECK(FAST_DOUBLE_ELEMENTS == 4);
-    DCHECK(FAST_HOLEY_DOUBLE_ELEMENTS == 5);
+    STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
+    STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
+    STATIC_ASSERT(FAST_ELEMENTS == 2);
+    STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3);
+    STATIC_ASSERT(FAST_DOUBLE_ELEMENTS == 4);
+    STATIC_ASSERT(FAST_HOLEY_DOUBLE_ELEMENTS == 5);
 
     // is the low bit set? If so, we are holey and that is good.
     __ And(at, a3, Operand(1));