BZHI (R32, R32, R32)

Operands

• Operand 1 (w): Register (EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI, R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D)
• Operand 2 (r): Register (EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI, R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D)
• Operand 3 (r): Register (EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI, R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D)
• Operand 4 (w, suppressed): Flags (AF: undef, CF: w, OF: w, PF: undef, SF: w, ZF: w)

Available performance data

• Alder Lake-P
• Alder Lake-E
• Rocket Lake
• Tiger Lake
• Ice Lake
• Cascade Lake
• Cannon Lake
• Skylake-X
• Coffee Lake
• Kaby Lake
• Skylake
• Broadwell
• Haswell
• AMD Zen 4
• AMD Zen 3
• AMD Zen 2
• AMD Zen+

Alder Lake-P

• Measurements
• Latencies
  • Latency operand 2 → 1: 3
  • Latency operand 2 → 4: 3
  • Latency operand 3 → 1: 3
  • Latency operand 3 → 4: 3
• Throughput
  • Computed from the port usage: 1.00
  • Measured (loop): 1.00
  • Measured (unrolled): 1.00
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p1

Alder Lake-E

• Measurements
• Latencies
  • Latency operand 2 → 1: 3
  • Latency operand 2 → 4: 3
  • Latency operand 3 → 1: 3
  • Latency operand 3 → 4: 3
• Throughput
  • Measured (loop): 1.00
  • Measured (unrolled): 1.00
• Number of μops
  • Executed: 1
  • Microcode Sequencer (MS): 0

Rocket Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Tiger Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Ice Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15
• Documentation
• Latency: 1.0
• Throughput: 0.5

Cascade Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Cannon Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Skylake-X

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15
• IACA 2.3
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50
• Number of μops: 1
• Port usage: 1*p15
• IACA 3.0
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.49
• Number of μops: 1
• Port usage: 1*p15

Coffee Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Kaby Lake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15

Skylake

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15
• IACA 2.3
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50
• Number of μops: 1
• Port usage: 1*p15
• IACA 3.0
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.49
• Number of μops: 1
• Port usage: 1*p15

Broadwell

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15
• IACA 2.2
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50 (with the -no_interiteration flag: 0.50)
• Number of μops: 1
• Port usage: 1*p15
• IACA 2.3
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50
• Number of μops: 1
• Port usage: 1*p15
• IACA 3.0
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.49
• Number of μops: 1
• Port usage: 1*p15

Haswell

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Computed from the port usage: 0.50
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
  • Retire slots: 1
  • Decoded (MITE): 1
  • Microcode Sequencer (MS): 0
• Port usage: 1*p15
• IACA 2.1
• Latency: 1
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50 (with the -no_interiteration flag: 0.50)
• Number of μops: 1
• Port usage: 1*p15
• IACA 2.2
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50 (with the -no_interiteration flag: 0.50)
• Number of μops: 1
• Port usage: 1*p15
• IACA 2.3
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.50
• Number of μops: 1
• Port usage: 1*p15
• IACA 3.0
• Throughput
  • Computed from the port usage: 0.50
  • IACA: 0.49
• Number of μops: 1
• Port usage: 1*p15

AMD Zen 4

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1

AMD Zen 3

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Measured (loop): 0.50
  • Measured (unrolled): 0.50
• Number of μops
  • Executed: 1
• Documentation
• Latency: 1
• Throughput: 0.50
• Number of μops: 1
• Port usage: ALU1/2

AMD Zen 2

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Measured (loop): 0.33
  • Measured (unrolled): 0.31
• Number of μops
  • Executed: 1
• Documentation
• Latency: 1
• Throughput: 0.25
• Number of μops: 1
• Port usage: ALU

AMD Zen+

• Measurements
• Latencies
  • Latency operand 2 → 1: 1
  • Latency operand 2 → 4: 1
  • Latency operand 3 → 1: 1
  • Latency operand 3 → 4: 1
• Throughput
  • Measured (loop): 0.36
  • Measured (unrolled): 0.31
• Number of μops
  • Executed: 1
• Documentation
• Latency: 1
• Throughput: 0.25
• Number of μops: 1
• Port usage: ALU