VZEROUPPER - Port Usage (IACA 3.0)
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 9.95 Cycles Throughput Bottleneck: Backend
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 10.0 0.0 | 1.3 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.4 | 1.3 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm0, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm2, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm3, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm4, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm5, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm6, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm7, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm8, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm9, xmm1
| 2 | 1.0 | | | | | | | | vcvtph2ps xmm10, xmm1
| 4 | | 1.3 | | | | 1.4 | 1.3 | | vzeroupper
Total Num Of Uops: 24
With blocking instructions for port '1':
Throughput Analysis Report
--------------------------
Block Throughput: 9.95 Cycles Throughput Bottleneck: Dependency chains
Loop Count: 23
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 1.3 0.0 | 10.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.4 | 1.4 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 3 | | 1.0 | | | | | | | vhaddpd xmm0, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm3, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm4, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm5, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm6, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm7, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm8, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm9, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm10, xmm1, xmm2
| 3 | | 1.0 | | | | | | | vhaddpd xmm11, xmm1, xmm2
| 4 | 1.3 | | | | | 1.4 | 1.4 | | vzeroupper
Total Num Of Uops: 34
With blocking instructions for port '5':
Throughput Analysis Report
--------------------------
Block Throughput: 9.95 Cycles Throughput Bottleneck: Backend
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 1.3 0.0 | 1.4 | 0.0 0.0 | 0.0 0.0 | 0.0 | 10.0 | 1.3 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | | | | | | 1.0 | | | movd mmx0, r8d
| 1 | | | | | | 1.0 | | | movd mmx1, r8d
| 1 | | | | | | 1.0 | | | movd mmx2, r8d
| 1 | | | | | | 1.0 | | | movd mmx3, r8d
| 1 | | | | | | 1.0 | | | movd mmx4, r8d
| 1 | | | | | | 1.0 | | | movd mmx5, r8d
| 1 | | | | | | 1.0 | | | movd mmx6, r8d
| 1 | | | | | | 1.0 | | | movd mmx7, r8d
| 1 | | | | | | 1.0 | | | movd mmx0, r8d
| 1 | | | | | | 1.0 | | | movd mmx1, r8d
| 4 | 1.3 | 1.4 | | | | | 1.3 | | vzeroupper
Total Num Of Uops: 14
With blocking instructions for ports {'0', '1'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 Cycles Throughput Bottleneck: Backend
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 5.0 0.0 | 5.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 2.0 | 2.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | vblendpd xmm0, xmm1, xmm2, 0x2
| 1 | | 1.0 | | | | | | | vblendpd xmm3, xmm1, xmm2, 0x2
| 1 | 1.0 | | | | | | | | vblendpd xmm4, xmm1, xmm2, 0x2
| 1 | | 1.0 | | | | | | | vblendpd xmm5, xmm1, xmm2, 0x2
| 1 | 1.0 | | | | | | | | vblendpd xmm6, xmm1, xmm2, 0x2
| 1 | | 1.0 | | | | | | | vblendpd xmm7, xmm1, xmm2, 0x2
| 1 | 1.0 | | | | | | | | vblendpd xmm8, xmm1, xmm2, 0x2
| 1 | | 1.0 | | | | | | | vblendpd xmm9, xmm1, xmm2, 0x2
| 1 | 1.0 | | | | | | | | vblendpd xmm10, xmm1, xmm2, 0x2
| 1 | | 1.0 | | | | | | | vblendpd xmm11, xmm1, xmm2, 0x2
| 4 | | | | | | 2.0 | 2.0 | | vzeroupper
Total Num Of Uops: 14
With blocking instructions for ports {'0', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 Cycles Throughput Bottleneck: Backend
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 5.0 0.0 | 2.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 2.0 | 5.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | rorx r8d, r9d, 0x2
| 1 | | | | | | | 1.0 | | rorx r10d, r9d, 0x2
| 1 | 1.0 | | | | | | | | rorx r11d, r9d, 0x2
| 1 | | | | | | | 1.0 | | rorx r12d, r9d, 0x2
| 1 | 1.0 | | | | | | | | rorx ebx, r9d, 0x2
| 1 | | | | | | | 1.0 | | rorx ecx, r9d, 0x2
| 1 | 1.0 | | | | | | | | rorx edx, r9d, 0x2
| 1 | | | | | | | 1.0 | | rorx r8d, r9d, 0x2
| 1 | 1.0 | | | | | | | | rorx r10d, r9d, 0x2
| 1 | | | | | | | 1.0 | | rorx r11d, r9d, 0x2
| 4 | | 2.0 | | | | 2.0 | | | vzeroupper
Total Num Of Uops: 14
With blocking instructions for ports {'1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 Cycles Throughput Bottleneck: Backend
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 2.0 0.0 | 5.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 5.0 | 2.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | | 1.0 | | | | | | | lea r8w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r9w, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r10w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r11w, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r12w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea bx, ptr [r14]
| 1 | | 1.0 | | | | | | | lea cx, ptr [r14]
| 1 | | | | | | 1.0 | | | lea dx, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r8w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r9w, ptr [r14]
| 4 | 2.0 | | | | | | 2.0 | | vzeroupper
Total Num Of Uops: 14
With blocking instructions for ports {'0', '1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.29 Cycles Throughput Bottleneck: FrontEnd
Loop Count: 24
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 4.3 0.0 | 4.3 | 0.0 0.0 | 0.0 0.0 | 0.0 | 4.3 | 3.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm0, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm2, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm3, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm4, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm5, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm6, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm7, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm8, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm9, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm10, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm11, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | | | vmovq xmm12, xmm1
| 4 | 0.3 | 0.3 | | | | 0.3 | 3.0 | | vzeroupper
Total Num Of Uops: 16
⇨ One μop that can only use ports {'0', '1', '5'}
With blocking instructions for ports {'0', '1', '5', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 Cycles Throughput Bottleneck: Dependency chains
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 5.0 0.0 | 5.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 5.0 | 5.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | mov bh, 0x0
| 1 | | 1.0 | | | | | | | mov ch, 0x0
| 1 | | | | | | 1.0 | | | mov dh, 0x0
| 1 | | | | | | | 1.0 | | mov ah, 0x0
| 1 | 1.0 | | | | | | | | mov bh, 0x0
| 1 | | 1.0 | | | | | | | mov ch, 0x0
| 1 | | | | | | 1.0 | | | mov dh, 0x0
| 1 | | | | | | | 1.0 | | mov ah, 0x0
| 1 | 1.0 | | | | | | | | mov bh, 0x0
| 1 | | 1.0 | | | | | | | mov ch, 0x0
| 1 | | | | | | 1.0 | | | mov dh, 0x0
| 1 | | | | | | | 1.0 | | mov ah, 0x0
| 1 | 1.0 | | | | | | | | mov bh, 0x0
| 1 | | 1.0 | | | | | | | mov ch, 0x0
| 1 | | | | | | 1.0 | | | mov dh, 0x0
| 1 | | | | | | | 1.0 | | mov ah, 0x0
| 4 | 1.0 | 1.0 | | | | 1.0 | 1.0 | | vzeroupper
Total Num Of Uops: 20
⇨ 3 μops that can only use ports {'0', '1', '5', '6'}