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/* { dg-do compile } */
/* { dg-options "-fdump-tree-crc-details" } */
/* { dg-skip-if "" { *-*-* } { "-O0" "-O1" "-Os" "-flto" } } */
#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 "function maybe contains CRC calculation." "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 "Polynomial's value is \\\{\[0, \]*1, 0, 0, 0, 0, 0, 0, 1, 0\\\}" "crc" } } */
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