RDSEED (R64)

Operands

• Operand 1 (w): Register (RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI, R8, R9, R10, R11, R12, R13, R14, R15)
• Operand 2 (w, suppressed): Flags (AF: w, CF: w, OF: w, PF: w, 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
• Tremont
• Goldmont Plus
• Goldmont
• AMD Zen 4
• AMD Zen 3
• AMD Zen 2
• AMD Zen+

Alder Lake-P

• Measurements
• Throughput
  • Computed from the port usage: 7.00
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 1362.33
• Number of μops
  • Executed: 21
  • Retire slots: 23
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 20
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 2*p0+3*p015+3*p056+5*p06+7*p1+1*p23A+3*p5

Alder Lake-E

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 1102.38
• Number of μops
  • Executed: 19
  • Microcode Sequencer (MS): 18
  • Requires the complex decoder

Rocket Lake

• Measurements
• Throughput
  • Computed from the port usage: 8.00
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 1413.57
• Number of μops
  • Executed: 33
  • Retire slots: 35
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 35
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 2*p0+4*p015+5*p0156+11*p06+7*p1+3*p5+1*p78

Tiger Lake

• Measurements
• Throughput
  • Computed from the port usage: 15.00
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 13732.86
• Number of μops
  • Executed: 80
  • Retire slots: 64
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 91
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 5*p0+5*p015+3*p0156+25*p06+11*p1+1*p23+9*p49+8*p5+12*p78

Ice Lake

• Measurements
• Throughput
  • Computed from the port usage: 21.50
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 10860.52
• Number of μops
  • Executed: 91
  • Retire slots: 66
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 116
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 3*p0+1*p0156+40*p06+10*p1+1*p23+10*p49+13*p5+13*p78

Cascade Lake

• Measurements
• Throughput
  • Computed from the port usage: 4.50
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 581.48
• Number of μops
  • Executed: 16
  • Retire slots: 16
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 16
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 3*p015+9*p06+2*p1+1*p23

Cannon Lake

• Measurements
• Throughput
  • Computed from the port usage: 2.75
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 905.85
• Number of μops
  • Executed: 12
  • Retire slots: 14
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 14
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 1*p015+3*p0156+5*p06+2*p1+1*p23

Skylake-X

• Measurements
• Throughput
  • Computed from the port usage: 4.50
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 548.98
• Number of μops
  • Executed: 16
  • Retire slots: 16
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 16
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 3*p015+1*p0156+9*p06+2*p1+1*p23

Coffee Lake

• Measurements
• Throughput
  • Computed from the port usage: 1740.00
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 5544.50
• Number of μops
  • Executed: 7876
  • Retire slots: 7846
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 7895
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 1677*p0+2*p0156+1803*p06+1666*p1+1*p15+1080*p23+10*p237+14*p4+1623*p5

Kaby Lake

• Measurements
• Throughput
  • Computed from the port usage: 3045.00
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 7041.15
• Number of μops
  • Executed: 13711
  • Retire slots: 13666
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 13809
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 2957*p0+5*p01+6*p05+3133*p06+2860*p1+2*p15+1899*p23+14*p4+2836*p5

Skylake

• Measurements
• Throughput
  • Computed from the port usage: 2457.50
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 6138.02
• Number of μops
  • Executed: 11095
  • Retire slots: 11046
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 11189
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 2378*p0+2*p01+4*p015+5*p05+2537*p06+2330*p1+1529*p23+10*p237+15*p4+2292*p5

Broadwell

• Measurements
• Throughput
  • Computed from the port usage: 20.50
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 2085.80
• Number of μops
  • Executed: 76
  • Retire slots: 59
  • Decoded (MITE): 0
  • Microcode Sequencer (MS): 104
  • Requires the complex decoder (no other instruction can be decoded with simple decoders in the same cycle)
• Port usage: 3*p0+38*p06+19*p1+7*p4+16*p5

Tremont

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 3523.60
• Number of μops
  • Executed: 59
  • Microcode Sequencer (MS): 59
  • Requires the complex decoder

Goldmont Plus

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 1929.20
• Number of μops
  • Executed: 16
  • Microcode Sequencer (MS): 16
  • Requires the complex decoder

Goldmont

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 3199.27
• Number of μops
  • Executed: 17
  • Microcode Sequencer (MS): 17
  • Requires the complex decoder

AMD Zen 4

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 83719.84
• Number of μops
  • Executed: 30

AMD Zen 3

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 3950.23
• Number of μops
  • Executed: 31
• Documentation
• Latency: variable
• Throughput: variable
• Number of μops: ucode

AMD Zen 2

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 3619.75
• Number of μops
  • Executed: 20
• Documentation
• Latency: variable
• Throughput: variable
• Number of μops: ucode

AMD Zen+

• Measurements
• Throughput
  • Measured (loop): 9223372036854775808.00
  • Measured (unrolled): 2536.00
• Number of μops
  • Executed: 19
• Documentation
• Latency: variable
• Throughput: variable
• Number of μops: ucode