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Bsr instruction x86 based: >> http://bit.ly/2xCnkJt << (download)
asm bsf
bit manipulation instructions in 8086
bsf assembly
lzcnt
_bitscanreverse gcc
bit scan reverse in c
intel bsf
x86 bsf
x86 assembly tutorials, x86 opcode reference, programming, pastebin with syntax highlighting. 0F BD, BSR r16, r/m16, Bit scan reverse on r/m16. 0F BD, BSR
BSR - Bit Scan Reverse (386+) Usage: BSR dest,src Modifies flags: ZF Scans source operand for first bit set. Sets ZF if a bit is found set and loads the destination
Basic Architecture, Order Number 253665; Instruction Set Reference A-Z, Order Number 325383;. System Programming Guide OVERVIEW OF VOLUME 2A, 2B, 2C AND 2D: INSTRUCTION SET REFERENCE. BSR—Bit Scan Reverse .
Wishlist of new X86 asm instructions. Originally, it was based around 16 bits in the 8086, later 32bit support was added. . add $-0x20, %ecx # Subtract 32, so the later add cancels out bsr %edx, %ebp # Scan the upper 32 bits cmove %ecx,
5 Sep 2011 Naturally, x86 has a useful opcode for this: BSR, bit-scan right. probably the best x86 instruction latency reference, based on actual empirical
The following table provides a list of x86-Assembler mnemonics, that is not complete. BOUND - Array Index Bound Check; BSF - Bit Scan Forward; BSR - Bit Scan Reverse; BSWAP - Byte of the operand or based on the instruction used.
2 May 2017 The instruction name is the assembly code for the instruction. . A > B latency and the B > A latency is sometimes obvious, sometimes based on guess- .. BTC, BTR, BTS m,r. 8. 6. 3. ALU, AGU. BSF r,r. 19. 7. 7. ALU. BSR r,r.
x86. Emulating Intrinsics. Intrinsics versus asm. Bsf/Bsr x86-64 Timings instruction on some architectures, for instance the x86-64 bit-manipulation .. test in succession, like the trailing zero count based on Reinhard Scharnagl's proposal :
Bit Manipulation Instructions Sets (BMI sets) are extensions to the x86 instruction set LZCNT is almost identical to the Bit Scan Reverse ( BSR ) instruction, but sets . AMD Excavator-based processors (ABM, BMI1, BMI2 and TBM supported)
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