XCHG (M32, R32) - Throughput and Uops (IACA 3.0)
With a non-indexed addressing mode
With 1 independent instruction
Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles Throughput Bottleneck: Dependency chains
Loop Count: 25
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 0.8 0.0 | 0.8 | 0.7 0.7 | 0.6 0.6 | 1.0 | 0.7 | 0.7 | 0.7 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 6^ | 0.8 | 0.8 | 0.7 0.7 | 0.6 0.6 | 1.0 | 0.7 | 0.7 | 0.7 | xchg dword ptr [r14], r8d
Total Num Of Uops: 6
With 8 independent instructions
Throughput Analysis Report
--------------------------
Block Throughput: 8.00 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 | 6.0 0.0 | 6.0 | 5.3 5.3 | 5.4 5.4 | 8.0 | 6.0 | 6.0 | 5.3 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 6^ | 1.0 | 1.0 | 0.6 0.6 | 0.7 0.7 | 1.0 | 1.0 | | 0.7 | xchg dword ptr [r14], r8d
| 6^ | 1.0 | 1.0 | 0.7 0.7 | 0.7 0.7 | 1.0 | | 1.0 | 0.6 | xchg dword ptr [r14+0x4], r9d
| 6^ | 1.0 | | 0.7 0.7 | 0.6 0.6 | 1.0 | 1.0 | 1.0 | 0.7 | xchg dword ptr [r14+0x8], r10d
| 6^ | | 1.0 | 0.6 0.6 | 0.7 0.7 | 1.0 | 1.0 | 1.0 | 0.7 | xchg dword ptr [r14+0xc], r11d
| 6^ | 1.0 | 1.0 | 0.7 0.7 | 0.7 0.7 | 1.0 | 1.0 | | 0.6 | xchg dword ptr [r14+0x10], r12d
| 6^ | 1.0 | 1.0 | 0.7 0.7 | 0.6 0.6 | 1.0 | | 1.0 | 0.7 | xchg dword ptr [r14+0x14], ebx
| 6^ | 1.0 | | 0.6 0.6 | 0.7 0.7 | 1.0 | 1.0 | 1.0 | 0.7 | xchg dword ptr [r14+0x18], ecx
| 6^ | | 1.0 | 0.7 0.7 | 0.7 0.7 | 1.0 | 1.0 | 1.0 | 0.6 | xchg dword ptr [r14+0x1c], edx
Total Num Of Uops: 48
With an indexed addressing mode
With 1 independent instruction
Throughput Analysis Report
--------------------------
Block Throughput: 1.49 Cycles Throughput Bottleneck: FrontEnd
Loop Count: 50
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 0.8 0.0 | 0.7 | 1.0 1.0 | 1.0 1.0 | 1.0 | 0.7 | 0.7 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 6 | 0.8 | 0.7 | 1.0 1.0 | 1.0 1.0 | 1.0 | 0.7 | 0.7 | | xchg dword ptr [r14+r13*1], r8d
Total Num Of Uops: 6
With 8 independent instructions
Throughput Analysis Report
--------------------------
Block Throughput: 11.95 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 | 6.0 0.0 | 6.0 | 8.0 8.0 | 8.0 8.0 | 8.0 | 6.0 | 6.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 6 | 1.0 | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | | | xchg dword ptr [r14+r13*1], r8d
| 6 | 1.0 | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | | 1.0 | | xchg dword ptr [r14+r13*1+0x4], r9d
| 6 | 1.0 | | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | 1.0 | | xchg dword ptr [r14+r13*1+0x8], r10d
| 6 | | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | 1.0 | | xchg dword ptr [r14+r13*1+0xc], r11d
| 6 | 1.0 | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | | | xchg dword ptr [r14+r13*1+0x10], r12d
| 6 | 1.0 | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | | 1.0 | | xchg dword ptr [r14+r13*1+0x14], ebx
| 6 | 1.0 | | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | 1.0 | | xchg dword ptr [r14+r13*1+0x18], ecx
| 6 | | 1.0 | 1.0 1.0 | 1.0 1.0 | 1.0 | 1.0 | 1.0 | | xchg dword ptr [r14+r13*1+0x1c], edx
Total Num Of Uops: 48