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/* { dg-do compile } */
/* { dg-options "-O2 -fsplit-paths -fdump-tree-dom3-details" } */
/* There should be two references to bufferstep that turn into
constants. */
/* { dg-final { scan-tree-dump-times "Replaced .bufferstep_\[0-9\]+. with constant .0." 1 "dom3"} } */
/* { dg-final { scan-tree-dump-times "Replaced .bufferstep_\[0-9\]+. with constant .1." 1 "dom3"} } */
/* And some assignments ought to fold down to constants. */
/* { dg-final { scan-tree-dump-times "Folded to: (?:bufferstep)?_\[0-9\]+ = 1;" 1 "dom3"} } */
/* { dg-final { scan-tree-dump-times "Folded to: (?:bufferstep)?_\[0-9\]+ = 0;" 1 "dom3"} } */
/* The XOR operations should have been optimized to constants. */
/* { dg-final { scan-tree-dump-not "bit_xor" "dom3"} } */
extern int *stepsizeTable;
void
adpcm_coder (signed char *outdata, int len)
{
signed char *outp;
int delta;
int outputbuffer;
int bufferstep = 0;
outp = (signed char *) outdata;
int step = 0;
int index = 0;
int diff = 0;
for (; len > 0; len--)
{
delta = 0;
if (diff >= step)
delta = 4;
step = stepsizeTable[index];
if (bufferstep)
outputbuffer = (delta << 4) & 0xf0;
else
*outp++ = (delta & 0x0f) | outputbuffer;
bufferstep = !bufferstep;
}
}
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