STMXCSR (M32) - Port Usage (IACA 2.1)
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Port0
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 11.0 0.0 | 0.0 | 0.3 0.0 | 0.3 0.0 | 1.0 | 0.0 | 1.0 | 0.3 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm0, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm2, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm3, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm4, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm5, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm6, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm7, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm8, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm9, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm10, xmm1
| 4^ | 1.0 | | 0.3 | 0.3 | 1.0 | | 1.0 | 0.3 | CP | stmxcsr dword ptr [r14]
Total Num Of Uops: 14
⇨ One μop that can only use port '0'
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Port4
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 3.7 0.0 | 3.7 0.0 | 11.0 | 0.0 | 1.0 | 3.7 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x88], r8
| 4^ | 1.0 | | 0.3 | 0.3 | 1.0 | | 1.0 | 0.3 | CP | stmxcsr dword ptr [r14]
Total Num Of Uops: 24
⇨ One μop that can only use port '4'
With blocking instructions for ports {'0', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 Cycles Throughput Bottleneck: Port0, Port6
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 6.0 0.0 | 0.0 | 0.3 0.0 | 0.3 0.0 | 1.0 | 0.0 | 6.0 | 0.3 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | CP | rol r8w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r9w, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r10w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r11w, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r12w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol bx, 0x0
| 1 | 1.0 | | | | | | | | CP | rol cx, 0x0
| 1 | | | | | | | 1.0 | | CP | rol dx, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r8w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r9w, 0x0
| 4^ | 1.0 | | 0.3 | 0.3 | 1.0 | | 1.0 | 0.3 | CP | stmxcsr dword ptr [r14]
Total Num Of Uops: 14
⇨ One μop that can only use ports {'0', '6'}
With blocking instructions for ports {'2', '3', '7'}:
Throughput Analysis Report
--------------------------
Block Throughput: 13.00 Cycles Throughput Bottleneck: Port4
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 4.3 0.0 | 4.3 0.0 | 13.0 | 0.0 | 1.0 | 4.3 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x88], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x90], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x98], r8
| 4^ | 1.0 | | 0.3 | 0.3 | 1.0 | | 1.0 | 0.3 | CP | stmxcsr dword ptr [r14]
Total Num Of Uops: 28
⇨ One μop that can only use ports {'2', '3', '7'}
With an indexed addressing mode
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Port0
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 11.0 0.0 | 0.0 | 0.5 0.0 | 0.5 0.0 | 1.0 | 0.0 | 1.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm0, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm2, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm3, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm4, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm5, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm6, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm7, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm8, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm9, xmm1
| 1 | 1.0 | | | | | | | | CP | cvtss2sd xmm10, xmm1
| 4 | 1.0 | | 0.5 | 0.5 | 1.0 | | 1.0 | | CP | stmxcsr dword ptr [r14+r13*1]
Total Num Of Uops: 14
⇨ One μop that can only use port '0'
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Port4
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 3.7 0.0 | 3.7 0.0 | 11.0 | 0.0 | 1.0 | 3.7 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 2^ | | | | 0.3 | 1.0 | | | 0.6 | CP | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.3 | CP | mov qword ptr [r14+0x88], r8
| 4 | 1.0 | | 0.6 | 0.3 | 1.0 | | 1.0 | | CP | stmxcsr dword ptr [r14+r13*1]
Total Num Of Uops: 24
⇨ One μop that can only use port '4'
With blocking instructions for ports {'0', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 Cycles Throughput Bottleneck: Port0, Port6
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 6.0 0.0 | 0.0 | 0.5 0.0 | 0.5 0.0 | 1.0 | 0.0 | 6.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | CP | rol r8w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r9w, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r10w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r11w, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r12w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol bx, 0x0
| 1 | 1.0 | | | | | | | | CP | rol cx, 0x0
| 1 | | | | | | | 1.0 | | CP | rol dx, 0x0
| 1 | 1.0 | | | | | | | | CP | rol r8w, 0x0
| 1 | | | | | | | 1.0 | | CP | rol r9w, 0x0
| 4 | 1.0 | | 0.5 | 0.5 | 1.0 | | 1.0 | | CP | stmxcsr dword ptr [r14+r13*1]
Total Num Of Uops: 14
⇨ One μop that can only use ports {'0', '6'}
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles Throughput Bottleneck: PORT2_AGU, PORT3_AGU
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.0 0.0 | 0.0 | 5.5 5.0 | 5.5 5.0 | 1.0 | 0.0 | 1.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 1^ | | | 1.0 1.0 | | | | | | CP | lddqu xmm0, xmmword ptr [r14+0x40]
| 1^ | | | | 1.0 1.0 | | | | | CP | lddqu xmm1, xmmword ptr [r14+0x50]
| 1^ | | | 1.0 1.0 | | | | | | CP | lddqu xmm2, xmmword ptr [r14+0x60]
| 1^ | | | | 1.0 1.0 | | | | | CP | lddqu xmm3, xmmword ptr [r14+0x70]
| 1^ | | | 1.0 1.0 | | | | | | CP | lddqu xmm4, xmmword ptr [r14+0x80]
| 1^ | | | | 1.0 1.0 | | | | | CP | lddqu xmm5, xmmword ptr [r14+0x90]
| 1^ | | | 1.0 1.0 | | | | | | CP | lddqu xmm6, xmmword ptr [r14+0xa0]
| 1^ | | | | 1.0 1.0 | | | | | CP | lddqu xmm7, xmmword ptr [r14+0xb0]
| 1^ | | | 1.0 1.0 | | | | | | CP | lddqu xmm8, xmmword ptr [r14+0xc0]
| 1^ | | | | 1.0 1.0 | | | | | CP | lddqu xmm9, xmmword ptr [r14+0xd0]
| 4 | 1.0 | | 0.5 | 0.5 | 1.0 | | 1.0 | | CP | stmxcsr dword ptr [r14+r13*1]
Total Num Of Uops: 14
⇨ One μop that can only use ports {'2', '3'}