uops-again.info

LFENCE;NOT RAX;POPCNT RAX,RBX on Broadwell (more architectures)

(open in new window) (raw data)
AssemblyLFENCE;NOT RAX;POPCNT RAX,RBX
Architecture CodenameBroadwell
Port Eligibility Instr. 1None
Port Eligibility Instr. 21*p0156 (6662 other cmds. with the same port eligibility for instr. 2)
Port Eligibility Instr. 31*p1 (2358 other cmds. with the same port eligibility for instr. 3)
(650 other cmds. with the same port eligibility for both instr. 2 and instr. 3)
Total Instr. Length (bytes)11
Cutoff 11288 (741 other commands with the same cutoff)
Cutoff 22576
Instruction 1LFENCE
Swap 🔄 Instruction 2 NOT RAX (444 other commands with the same Instruction 2)
Instruction 3POPCNT RAX,RBX (444 other commands with the same Instruction 3)
Number of instructions3
Graph Generationpython3 unroll_csv.py -a BDW -asm "LFENCE;NOT RAX;POPCNT RAX,RBX" && python3 normalize_cycles.py
Length Instruction 1 (bytes)3
Length Instruction 2 (bytes)3
Length Instruction 3 (bytes)5
Regioningtrue
Region Characterization Type17 (568 other commands with the same type)
Element Order Changes Regioning Effecttrue
Element Order Change DescriptionDifferent pattern of Type21

LFENCE;NOT RAX;POPCNT RAX,RBX on additional architectures:

Other commands where Cutoff 1 = 1288:

741 instructions, click for details

Other commands where Instruction 2 = NOT RAX:

444 instructions, click for details

Other commands where Instruction 3 = POPCNT RAX,RBX:

444 instructions, click for details

Other commands where Region Characterization = Type17:

568 instructions, click for details

Other commands where the port eligibility for Instruction 2 is 1*p0156:

6662 instructions, click for details

Other commands where the port eligibility for Instruction 3 is 1*p1:

2358 instructions, click for details

Other commands where the port eligibility for Instruction 2 is 1*p0156 and for Instruction 3 is 1*p1: