20 /// Helper function which extracts the specified 16-bit chunk from a
23   assert(ChunkIdx < 4 && "Out of range chunk index specified!");  in getChunk()
28 /// Check whether the given 16-bit chunk replicated to full 64-bit width
30 static bool canUseOrr(uint64_t Chunk, uint64_t &Encoding) {  in canUseOrr()  argument
31   Chunk = (Chunk << 48) | (Chunk << 32) | (Chunk << 16) | Chunk;  in canUseOrr()
33   return AArch64_AM::processLogicalImmediate(Chunk, 64, Encoding);  in canUseOrr()
49   // Scan the constant and count how often every chunk occurs.  in tryToreplicateChunks()
54   for (const auto &Chunk : Counts) {  in tryToreplicateChunks()  local
55     const uint64_t ChunkVal = Chunk.first;  in tryToreplicateChunks()
56     const unsigned Count = Chunk.second;  in tryToreplicateChunks()
71     // Find the first chunk not materialized with the ORR instruction.  in tryToreplicateChunks()
88     // Find the remaining chunk which needs to be materialized.  in tryToreplicateChunks()
103 /// Check whether this chunk matches the pattern '1...0...'. This pattern
106 static bool isStartChunk(uint64_t Chunk) {  in isStartChunk()  argument
107   if (Chunk == 0 || Chunk == std::numeric_limits<uint64_t>::max())  in isStartChunk()
110   return isMask_64(~Chunk);  in isStartChunk()
113 /// Check whether this chunk matches the pattern '0...1...' This pattern
116 static bool isEndChunk(uint64_t Chunk) {  in isEndChunk()  argument
117   if (Chunk == 0 || Chunk == std::numeric_limits<uint64_t>::max())  in isEndChunk()
120   return isMask_64(Chunk);  in isEndChunk()
123 /// Clear or set all bits in the chunk at the given index.
128     // Clear chunk in the immediate.  in updateImm()
131     // Set all bits in the immediate for the particular chunk.  in updateImm()
143 /// Assuming S is a chunk which starts the sequence (1...0...), E is a chunk
145 /// contain at least one S and E chunk.
159     int64_t Chunk = getChunk(UImm, Idx);  in trySequenceOfOnes()  local
160     // Sign extend the 16-bit chunk to 64-bit.  in trySequenceOfOnes()
161     Chunk = (Chunk << 48) >> 48;  in trySequenceOfOnes()
163     if (isStartChunk(Chunk))  in trySequenceOfOnes()
165     else if (isEndChunk(Chunk))  in trySequenceOfOnes()
169   // Early exit in case we can't find a start/end chunk.  in trySequenceOfOnes()
175   // Chunks between the start and end chunk need to have all their bits set.  in trySequenceOfOnes()
193     const uint64_t Chunk = getChunk(UImm, Idx);  in trySequenceOfOnes()  local
195     // Check whether we are looking at a chunk which is not part of the  in trySequenceOfOnes()
197     if ((Idx < StartIdx || EndIdx < Idx) && Chunk != Outside) {  in trySequenceOfOnes()
206       // Check whether we are looking a chunk which is part of the contiguous  in trySequenceOfOnes()
208     } else if (Idx > StartIdx && Idx < EndIdx && Chunk != Inside) {  in trySequenceOfOnes()
410   // Early-exit if the big chunk couldn't be a power-of-two number of runs  in tryEorOfLogicalImmediates()
542     const unsigned Chunk = (Imm >> Shift) & Mask;  in expandMOVImm()  local
543     if (Chunk == Mask)  in expandMOVImm()
545     else if (Chunk == 0)  in expandMOVImm()
580   // zero out the chunk which will be replaced, we fill the chunk which will  in expandMOVImm()