[llvm] [LLVM][TableGen][DecoderEmitter] Add wrapper class for `bit_value_t` (PR #146248)

[Craig Topper via llvm-commits]

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@@ -1453,18 +1424,18 @@ void FilterChooser::emitSoftFailTableEntry(DecoderTableInfo &TableInfo,
   APInt PositiveMask(BitWidth, 0ULL);
   APInt NegativeMask(BitWidth, 0ULL);
   for (unsigned i = 0; i < BitWidth; ++i) {
-    bit_value_t B = bitFromBits(*SFBits, i);
-    bit_value_t IB = bitFromBits(*InstBits, i);
+    BitValue B(*SFBits, i);
+    BitValue IB(*InstBits, i);
 
-    if (B != BIT_TRUE)
+    if (B != BitValue::BIT_TRUE)
       continue;
 
-    switch (IB) {
-    case BIT_FALSE:
+    switch (IB.getRawValue()) {
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topperc wrote:

I think this is the only use of getRawValue? Can we rewrite this so we don't need a getRawValue?

https://github.com/llvm/llvm-project/pull/146248