[TableGen] Use isUInt to simplify some asserts. NFC

Author: topperc

llvm/utils/TableGen/DecoderEmitter.cpp

@@ -688,7 +688,7 @@ static void resolveTableFixups(DecoderTable &Table, const FixupList &Fixups,
     uint32_t Delta = DestIdx - FixupIdx - 3;
     // Our NumToSkip entries are 24-bits. Make sure our table isn't too
     // big.
-    assert(Delta < (1u << 24));
+    assert(isUInt<24>(Delta));
     Table[FixupIdx] = (uint8_t)Delta;
     Table[FixupIdx + 1] = (uint8_t)(Delta >> 8);
     Table[FixupIdx + 2] = (uint8_t)(Delta >> 16);
@@ -698,7 +698,7 @@ static void resolveTableFixups(DecoderTable &Table, const FixupList &Fixups,
 // Emit table entries to decode instructions given a segment or segments
 // of bits.
 void Filter::emitTableEntry(DecoderTableInfo &TableInfo) const {
-  assert((NumBits < (1u << 8)) && "NumBits overflowed uint8 table entry!");
+  assert(isUInt<8>(NumBits) && "NumBits overflowed uint8 table entry!");
   TableInfo.Table.push_back(MCD::OPC_ExtractField);
 
   SmallString<16> SBytes;
@@ -753,8 +753,7 @@ void Filter::emitTableEntry(DecoderTableInfo &TableInfo) const {
     // two as to account for the width of the NumToSkip field itself.
     if (PrevFilter) {
       uint32_t NumToSkip = Table.size() - PrevFilter - 3;
-      assert(NumToSkip < (1u << 24) &&
-             "disassembler decoding table too large!");
+      assert(isUInt<24>(NumToSkip) && "disassembler decoding table too large!");
       Table[PrevFilter] = (uint8_t)NumToSkip;
       Table[PrevFilter + 1] = (uint8_t)(NumToSkip >> 8);
       Table[PrevFilter + 2] = (uint8_t)(NumToSkip >> 16);
@@ -1446,7 +1445,7 @@ void FilterChooser::emitSingletonTableEntry(DecoderTableInfo &TableInfo,
   // Check any additional encoding fields needed.
   for (unsigned I = Size; I != 0; --I) {
     unsigned NumBits = EndBits[I - 1] - StartBits[I - 1] + 1;
-    assert((NumBits < (1u << 8)) && "NumBits overflowed uint8 table entry!");
+    assert(isUInt<8>(NumBits) && "NumBits overflowed uint8 table entry!");
     TableInfo.Table.push_back(MCD::OPC_CheckField);
     uint8_t Buffer[16], *P;
     encodeULEB128(StartBits[I - 1], Buffer);