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Use vpternlogq in raid_gen3-6_avx512bw to fuse sequential vpxorq instructions into single 3-way XORs

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This commit is contained in:
Andrea Mazzoleni 2026-06-04 17:45:48 +02:00
parent 9e1652673d
commit 807f2f6690
1 changed files with 14 additions and 28 deletions
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42
raid/x86.c
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@ -899,10 +899,8 @@ void raid_gen3_avx512bw(int nd, size_t size, void **vv)
asm volatile ("vpshufb %zmm11,%zmm13,%zmm13");
asm volatile ("vpshufb %zmm10,%zmm14,%zmm14");
asm volatile ("vpshufb %zmm11,%zmm15,%zmm15");
asm volatile ("vpxorq %zmm12,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm13,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm14,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm15,%zmm2,%zmm2");
asm volatile ("vpternlogq $0x96,%zmm12,%zmm13,%zmm1");
asm volatile ("vpternlogq $0x96,%zmm14,%zmm15,%zmm2");
}
asm volatile ("vmovntdq %%zmm0,%0" : "=m" (p[i]));
@ -1413,12 +1411,9 @@ void raid_gen4_avx512bw(int nd, size_t size, void **vv)
asm volatile ("vpshufb %zmm11,%zmm15,%zmm15");
asm volatile ("vpshufb %zmm10,%zmm16,%zmm16");
asm volatile ("vpshufb %zmm11,%zmm17,%zmm17");
asm volatile ("vpxorq %zmm12,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm13,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm14,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm15,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm16,%zmm3,%zmm3");
asm volatile ("vpxorq %zmm17,%zmm3,%zmm3");
asm volatile ("vpternlogq $0x96,%zmm12,%zmm13,%zmm1");
asm volatile ("vpternlogq $0x96,%zmm14,%zmm15,%zmm2");
asm volatile ("vpternlogq $0x96,%zmm16,%zmm17,%zmm3");
}
asm volatile ("vmovntdq %%zmm0,%0" : "=m" (p[i]));
@ -1887,14 +1882,10 @@ void raid_gen5_avx512bw(int nd, size_t size, void **vv)
asm volatile ("vpshufb %zmm11,%zmm17,%zmm17");
asm volatile ("vpshufb %zmm10,%zmm18,%zmm18");
asm volatile ("vpshufb %zmm11,%zmm19,%zmm19");
asm volatile ("vpxorq %zmm12,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm13,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm14,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm15,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm16,%zmm3,%zmm3");
asm volatile ("vpxorq %zmm17,%zmm3,%zmm3");
asm volatile ("vpxorq %zmm18,%zmm4,%zmm4");
asm volatile ("vpxorq %zmm19,%zmm4,%zmm4");
asm volatile ("vpternlogq $0x96,%zmm12,%zmm13,%zmm1");
asm volatile ("vpternlogq $0x96,%zmm14,%zmm15,%zmm2");
asm volatile ("vpternlogq $0x96,%zmm16,%zmm17,%zmm3");
asm volatile ("vpternlogq $0x96,%zmm18,%zmm19,%zmm4");
}
asm volatile ("vmovntdq %%zmm0,%0" : "=m" (p[i]));
@ -2437,16 +2428,11 @@ void raid_gen6_avx512bw(int nd, size_t size, void **vv)
asm volatile ("vpshufb %zmm11,%zmm19,%zmm19");
asm volatile ("vpshufb %zmm10,%zmm20,%zmm20");
asm volatile ("vpshufb %zmm11,%zmm21,%zmm21");
asm volatile ("vpxorq %zmm12,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm13,%zmm1,%zmm1");
asm volatile ("vpxorq %zmm14,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm15,%zmm2,%zmm2");
asm volatile ("vpxorq %zmm16,%zmm3,%zmm3");
asm volatile ("vpxorq %zmm17,%zmm3,%zmm3");
asm volatile ("vpxorq %zmm18,%zmm4,%zmm4");
asm volatile ("vpxorq %zmm19,%zmm4,%zmm4");
asm volatile ("vpxorq %zmm20,%zmm5,%zmm5");
asm volatile ("vpxorq %zmm21,%zmm5,%zmm5");
asm volatile ("vpternlogq $0x96,%zmm12,%zmm13,%zmm1");
asm volatile ("vpternlogq $0x96,%zmm14,%zmm15,%zmm2");
asm volatile ("vpternlogq $0x96,%zmm16,%zmm17,%zmm3");
asm volatile ("vpternlogq $0x96,%zmm18,%zmm19,%zmm4");
asm volatile ("vpternlogq $0x96,%zmm20,%zmm21,%zmm5");
}
asm volatile ("vmovntdq %%zmm0,%0" : "=m" (p[i]));