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Merge remote-tracking branch 'origin/remove-most-of-m64-type-usage' into integration_2025_w04 (!3209)

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Remove most of m64 type usage

MMX instructions were first SIMD version, the registers management is complex
(_mm_empty()) so, it is better to remove it now and use more recent instructions

anyway, gcc/clang should replace it automatically as long as we enable sse2,
that should always be the case but for code understanding and for ARM porting
for example, it is better to explicitly remove it
This commit is contained in:
Jaroslava Fiedlerova
2025-01-27 10:35:20 +01:00
parent 10392b5da2 b999177810
commit f3e5ab1060
8 changed files with 176 additions and 315 deletions
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radio/rfsimulator/stored_node.c
+2 -38
View File
@@ -44,42 +44,6 @@ int fullread(int fd, void *_buf, int count) {
return ret;
}
#define shift 4
int32_t signal_energy(int32_t *input,uint32_t length) {
int32_t i;
int32_t temp,temp2;
register simde__m64 mm0, mm1, mm2, mm3;
simde__m64 *in = (simde__m64 *)input;
mm0 = simde_mm_setzero_si64(); // pxor(mm0,mm0);
mm3 = simde_mm_setzero_si64(); // pxor(mm3,mm3);
for (i=0; i<length>>1; i++) {
mm1 = in[i];
mm2 = mm1;
mm1 = _m_pmaddwd(mm1,mm1);
mm1 = _m_psradi(mm1,shift);// shift any 32 bits blocs of the word by the value shift
mm0 = _m_paddd(mm0,mm1);// add the two 64 bits words 4 bytes by 4 bytes
// mm2 = _m_psrawi(mm2,shift_DC);
mm3 = _m_paddw(mm3,mm2);// add the two 64 bits words 2 bytes by 2 bytes
}
mm1 = mm0;
mm0 = _m_psrlqi(mm0,32);
mm0 = _m_paddd(mm0,mm1);
temp = _m_to_int(mm0);
temp/=length;
temp<<=shift; // this is the average of x^2
// now remove the DC component
mm2 = _m_psrlqi(mm3,32);
mm2 = _m_paddw(mm2,mm3);
mm2 = _m_pmaddwd(mm2,mm2);
temp2 = _m_to_int(mm2);
temp2/=(length*length);
// temp2<<=(2*shift_DC);
temp -= temp2;
return((temp>0)?temp:1);
}
void fullwrite(int fd, void *_buf, int count) {
char *buf = _buf;
@@ -238,8 +202,8 @@ int main(int argc, char *argv[]) {
((int16_t *)buff)[i]/=16;
usleep(1000);
printf("sending at ts: %lu, number of samples: %d, energy: %d\n",
header.timestamp, header.size, signal_energy(buff, header.size));
printf("sending at ts: %lu, number of samples: %d\n",
header.timestamp, header.size);
fullwrite(serviceSock, buff, dataSize);
// Purge incoming samples
setblocking(serviceSock, notBlocking);