RCL (R64, CL) - Throughput and Uops (IACA 2.3)
With different registers for different operands
With 1 independent instruction
Throughput Analysis Report
--------------------------
Block Throughput: 10.52 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.7 0.0 | 2.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.6 | 1.6 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.6 | | CP | rcl r8, cl
Total Num Of Uops: 7
With additional dependency-breaking instructions
Throughput Analysis Report
--------------------------
Block Throughput: 10.52 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 2.0 0.0 | 2.0 | 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 | |
---------------------------------------------------------------------------------
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r8, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
Total Num Of Uops: 8
With 12 independent instructions
Throughput Analysis Report
--------------------------
Block Throughput: 126.95 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 20.0 0.0 | 24.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 20.0 | 20.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 1.0 | 2.0 | | | | 2.0 | 2.0 | | | rcl r8, cl
| 7 | 2.0 | 2.0 | | | | 1.6 | 1.4 | | | rcl r9, cl
| 7 | 2.0 | 2.0 | | | | 1.4 | 1.6 | | | rcl r10, cl
| 7 | 1.0 | 2.0 | | | | 2.0 | 2.0 | | | rcl r11, cl
| 7 | 2.0 | 2.0 | | | | 1.7 | 1.3 | | | rcl r12, cl
| 7 | 2.0 | 2.0 | | | | 1.3 | 1.7 | | | rcl r13, cl
| 7 | 1.0 | 2.0 | | | | 2.0 | 2.0 | | | rcl r14, cl
| 7 | 2.0 | 2.0 | | | | 1.6 | 1.4 | | | rcl rbx, cl
| 7 | 2.0 | 2.0 | | | | 1.4 | 1.6 | | | rcl rdx, cl
| 7 | 1.0 | 2.0 | | | | 2.0 | 2.0 | | | rcl rdi, cl
| 7 | 2.0 | 2.0 | | | | 1.6 | 1.4 | | | rcl rsi, cl
| 7 | 2.0 | 2.0 | | | | 1.4 | 1.6 | | | rcl rbp, cl
Total Num Of Uops: 84
With additional dependency-breaking instructions
Throughput Analysis Report
--------------------------
Block Throughput: 24.00 Cycles Throughput Bottleneck: FrontEnd
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 24.0 0.0 | 24.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 24.0 | 24.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r8, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r9, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r10, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r11, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r12, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r13, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl r14, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rbx, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rdx, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rdi, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rsi, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rbp, cl
| 1 | | | | | | 1.0 | | | CP | test r15, r15
Total Num Of Uops: 96
With the same register for for different operands
With 1 independent instruction
Throughput Analysis Report
--------------------------
Block Throughput: 10.52 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 1.7 0.0 | 2.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.6 | 1.6 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.6 | | CP | rcl rcx, cl
Total Num Of Uops: 7
With additional dependency-breaking instructions
Throughput Analysis Report
--------------------------
Block Throughput: 10.52 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 2.0 0.0 | 2.0 | 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 | |
---------------------------------------------------------------------------------
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | CP | rcl rcx, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
Total Num Of Uops: 8
With 13 independent instructions
Throughput Analysis Report
--------------------------
Block Throughput: 137.95 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 21.7 0.0 | 26.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 21.6 | 21.6 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.7 | | | rcl rcx, cl
| 7 | 1.6 | 2.0 | | | | 1.7 | 1.6 | | | rcl r8, cl
| 7 | 1.6 | 2.0 | | | | 1.7 | 1.6 | | | rcl r9, cl
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.6 | | | rcl r10, cl
| 7 | 1.6 | 2.0 | | | | 1.6 | 1.7 | | | rcl r11, cl
| 7 | 1.6 | 2.0 | | | | 1.6 | 1.7 | | | rcl r12, cl
| 7 | 1.7 | 2.0 | | | | 1.7 | 1.6 | | | rcl r13, cl
| 7 | 1.6 | 2.0 | | | | 1.6 | 1.7 | | | rcl r14, cl
| 7 | 1.6 | 2.0 | | | | 1.7 | 1.6 | | | rcl rbx, cl
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.7 | | | rcl rdx, cl
| 7 | 1.6 | 2.0 | | | | 1.7 | 1.6 | | | rcl rdi, cl
| 7 | 1.6 | 2.0 | | | | 1.7 | 1.6 | | | rcl rsi, cl
| 7 | 1.7 | 2.0 | | | | 1.6 | 1.6 | | | rcl rbp, cl
Total Num Of Uops: 91
With additional dependency-breaking instructions
Throughput Analysis Report
--------------------------
Block Throughput: 34.29 Cycles Throughput Bottleneck: Dependency chains (possibly between iterations)
Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
---------------------------------------------------------------------------------------
| Cycles | 26.0 0.0 | 26.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 26.0 | 26.0 | 0.0 |
---------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 | |
---------------------------------------------------------------------------------
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rcx, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r8, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r9, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r10, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r11, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r12, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r13, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl r14, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rbx, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rdx, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rdi, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rsi, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
| 7 | 2.0 | 2.0 | | | | 1.0 | 2.0 | | | rcl rbp, cl
| 1 | | | | | | 1.0 | | | | test r15, r15
Total Num Of Uops: 104