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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-crc-details" } */
#define CRC16_CCITT 0x102
#define POLYNOM CRC16_CCITT
unsigned int crc16(unsigned int crcValue, unsigned char newByte) {
unsigned char i;
for (i = 0; i < 8; i++) {
if (((crcValue & 0x8000) >> 8) ^ (newByte & 0x80)) {
crcValue = (crcValue << 1) ^ POLYNOM;
} else {
crcValue = (crcValue << 1);
}
newByte <<= 1;
}
return crcValue;
}
/* { dg-final { scan-tree-dump "crc16 function maybe calculates CRC and returns it." "crc"} } */
/* { dg-final { scan-tree-dump "Return size is 32" "crc"} } */
/* { dg-final { scan-tree-dump "Loop iteration number is 7" "crc"} } */
/* { dg-final { scan-tree-dump "Bit forward" "crc"} } */
/* { dg-final { scan-tree-dump "Executing \[a-zA-Z_\]\[a-zA-Z0-9_\]* = \[a-zA-Z_\]\[a-zA-Z0-9_\]* \\\^ \[a-zA-Z0-9_\]+\(\\\(\[a-zA-Z\]\\\)\)?;" "crc" } } */
/* { dg-final { scan-tree-dump "Executing \[a-zA-Z_\]\[a-zA-Z0-9_\]* = \[a-zA-Z_\]\[a-zA-Z0-9_\]* \(<<|>>\) \[0-9]+;" "crc" } } */
/* { dg-final { scan-tree-dump "crc16 function calculates CRC!" "crc"} } */
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