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A curated reference for x86-64 and AArch64 instructions. Search by mnemonic, intrinsic name, or operation, then open a family for its interactive explorer, pseudocode, and intrinsics.

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ArithmeticADDADD r32_dst, r32_srcADD32/64Integer addition PADDBPADDB xmm1, xmm2ADD128/256Add bytesInteractive explorer PADDDPADDD xmm1, xmm2128/256Add 32-bit elements PADDUSBPADDUSB xmm1, xmm2UQADD128/256Add unsigned bytes with saturationInteractive explorer PADDWPADDW xmm1, xmm2128/256Add 16-bit elements PMULLDPMULLD xmm1, xmm2MUL128/256Multiply low 32-bit elements PMULLWPMULLW xmm1, xmm2MUL128/256Multiply low 16-bit elements PSUBBPSUBB xmm1, xmm2SUB128/256Subtract bytesInteractive explorer PSUBDPSUBD xmm1, xmm2128/256Subtract 32-bit elements PSUBWPSUBW xmm1, xmm2128/256Subtract 16-bit elements SUBSUB r32_dst, r32_srcSUB32/64Integer subtractionCompareCMOVBCMOVB r32_dst, r32_src32/64Move if unsigned below CMOVLCMOVL r32_dst, r32_src32/64Move if signed less CMOVNBCMOVNB r32_dst, r32_src32/64Move if unsigned above or equal CMOVNLCMOVNL r32_dst, r32_src32/64Move if signed greater or equal CMOVNZCMOVNZ r32_dst, r32_src32/64Move if not equal / nonzero CMOVZCMOVZ r32_dst, r32_src32/64Move if equal / zero CMPCMP r32_dst, r32_srcSUBS32/64Compare integers PCMPEQBPCMPEQB xmm1, xmm2128/256Compare bytes for equalityInteractive explorer PCMPEQDPCMPEQD xmm1, xmm2CMEQ128/256Compare equal 32-bit elements PCMPEQWPCMPEQW xmm1, xmm2CMEQ128/256Compare equal 16-bit elements PCMPGTDPCMPGTD xmm1, xmm2CMGT128/256Compare signed greater 32-bit elements PCMPGTWPCMPGTW xmm1, xmm2CMGT128/256Compare signed greater 16-bit elements SETBSETB r88Set byte if unsigned below SETLSETL r88Set byte if signed less SETNBSETNB r88Set byte if unsigned above or equal SETNLSETNL r88Set byte if signed greater or equal SETNZSETNZ r88Set byte if not equal / nonzero SETZSETZ r88Set byte if equal / zero TESTTEST r32_dst, r32_src32/64Test bitsControl flowCALLCALL rel3264Call a near target JBJB rel8Branch if unsigned below JLJL rel8Branch if signed less JMPJMP rel864Jump to a target JNBJNB rel8Branch if unsigned above or equal JNLJNL rel8Branch if signed greater or equal JNZJNZ rel8Branch if not equal / nonzero JZJZ rel8Branch if equal / zero RETRET64Return to the callerConvertMOVSXMOVSX r32, r832/64Move with sign extension MOVSXDMOVSXD r64, r3264Move with sign extension MOVZXMOVZX r32, r832/64Move with zero extension PACKSSDWPACKSSDW xmm1, xmm2SQXTN128/256Pack to signed 16-bit elements with saturation PACKSSWBPACKSSWB xmm1, xmm2SQXTN128/256Pack to signed 8-bit elements with saturation PACKUSWBPACKUSWB xmm1, xmm2128/256Pack signed words into unsigned bytes PMOVSXBWPMOVSXBW xmm1, xmm2SSHLL128/256Widen bytes to words with sign extension PMOVZXBWPMOVZXBW xmm1, xmm2USHLL128/256Widen bytes to words with zero extensionFloating pointADDPDADDPD xmm1, xmm2FADD128/256Add packed 64-bit floating-point values ADDPSADDPS xmm1, xmm2FADD128/256Add packed 32-bit floating-point values DIVPDDIVPD xmm1, xmm2FDIV128/256Divide packed 64-bit floating-point values DIVPSDIVPS xmm1, xmm2FDIV128/256Divide packed 32-bit floating-point values MULPDMULPD xmm1, xmm2FMUL128/256Multiply packed 64-bit floating-point values MULPSMULPS xmm1, xmm2FMUL128/256Multiply packed 32-bit floating-point values SUBPDSUBPD xmm1, xmm2FSUB128/256Subtract packed 64-bit floating-point values SUBPSSUBPS xmm1, xmm2FSUB128/256Subtract packed 32-bit floating-point valuesLogicANDAND r32_dst, r32_src32/64Bitwise AND OROR r32_dst, r32_src32/64Bitwise OR XORXOR r32_dst, r32_src32/64Bitwise exclusive ORLogicalPANDPAND xmm1, xmm2AND128/256Bitwise ANDInteractive explorer PORPOR xmm1, xmm2ORR128/256Bitwise ORInteractive explorer PXORPXOR xmm1, xmm2EOR128/256Bitwise exclusive ORInteractive explorerMemoryLEALEA r32_dst, [base64 + index64*scale + disp]32/64Compute an effective addressMoveMOVMOV r32_dst, r32_src32/64Copy dataRearrangePSHUFBPSHUFB xmm1, xmm2TBL128/256Shuffle bytesInteractive explorer PSHUFDPSHUFD xmm1, xmm2, imm8128/256Shuffle 32-bit elementsInteractive explorer PUNPCKHBWPUNPCKHBW xmm1, xmm2ZIP2128/256Interleave high bytesInteractive explorer PUNPCKLBWPUNPCKLBW xmm1, xmm2ZIP1128/256Interleave low bytesInteractive explorerShiftPSLLWPSLLW xmm, imm8SHL128/256Shift 16-bit elements leftInteractive explorer PSRLWPSRLW xmm, imm8USHR128/256Shift 16-bit elements rightInteractive explorer