Branch

int __lsx_bz_v (__m128i a)

Synopsis

int __lsx_bz_v (__m128i a)
#include <lsxintrin.h>
Instruction: vseteqz.v fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if the whole vector a equals to zero.

Operation

dst = a.qword[0] == 0;

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bnz_v (__m128i a)

Synopsis

int __lsx_bnz_v (__m128i a)
#include <lsxintrin.h>
Instruction: vsetnez.v fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if the whole vector a is non-zero.

Operation

dst = a.qword[0] != 0;

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bz_b (__m128i a)

Synopsis

int __lsx_bz_b (__m128i a)
#include <lsxintrin.h>
Instruction: vsetanyeqz.b fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if any 8-bit element in a equals to zero.

Operation

dst = 0;
for (int i = 0; i < 16; i++) {
  if (a.byte[i] == 0) {
    dst = 1;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bz_h (__m128i a)

Synopsis

int __lsx_bz_h (__m128i a)
#include <lsxintrin.h>
Instruction: vsetanyeqz.h fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if any 16-bit element in a equals to zero.

Operation

dst = 0;
for (int i = 0; i < 8; i++) {
  if (a.half[i] == 0) {
    dst = 1;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bz_w (__m128i a)

Synopsis

int __lsx_bz_w (__m128i a)
#include <lsxintrin.h>
Instruction: vsetanyeqz.w fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if any 32-bit element in a equals to zero.

Operation

dst = 0;
for (int i = 0; i < 4; i++) {
  if (a.word[i] == 0) {
    dst = 1;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bz_d (__m128i a)

Synopsis

int __lsx_bz_d (__m128i a)
#include <lsxintrin.h>
Instruction: vsetanyeqz.d fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if any 64-bit element in a equals to zero.

Operation

dst = 0;
for (int i = 0; i < 2; i++) {
  if (a.dword[i] == 0) {
    dst = 1;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bnz_b (__m128i a)

Synopsis

int __lsx_bnz_b (__m128i a)
#include <lsxintrin.h>
Instruction: vsetallnez.b fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if all 8-bit elements in a are non-zero.

Operation

dst = 1;
for (int i = 0; i < 16; i++) {
  if (a.byte[i] == 0) {
    dst = 0;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bnz_h (__m128i a)

Synopsis

int __lsx_bnz_h (__m128i a)
#include <lsxintrin.h>
Instruction: vsetallnez.h fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if all 16-bit elements in a are non-zero.

Operation

dst = 1;
for (int i = 0; i < 8; i++) {
  if (a.half[i] == 0) {
    dst = 0;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bnz_w (__m128i a)

Synopsis

int __lsx_bnz_w (__m128i a)
#include <lsxintrin.h>
Instruction: vsetallnez.w fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if all 32-bit elements in a are non-zero.

Operation

dst = 1;
for (int i = 0; i < 4; i++) {
  if (a.word[i] == 0) {
    dst = 0;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2

int __lsx_bnz_d (__m128i a)

Synopsis

int __lsx_bnz_d (__m128i a)
#include <lsxintrin.h>
Instruction: vsetallnez.d fcc, vr; bcnez
CPU Flags: LSX

Description

Expected to be used in branches: branch if all 64-bit elements in a are non-zero.

Operation

dst = 1;
for (int i = 0; i < 2; i++) {
  if (a.dword[i] == 0) {
    dst = 0;
  }
}

Tested on real machine.

Latency and Throughput

CPU	Latency	Throughput (CPI)
3A6000	N/A	2
3C5000	N/A	2