This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b
KSHIFTLD
This instruction shifts the value of a source operand to the left by a count specified in a register or immediate, then loads the result into a destination operand.
The table below covers what the source and destinations can be.
| source | destination(s) |
|---|---|
| reg | reg |
| memory | reg |
| imm | reg |
DO NOT support LOCK
This instruction is only available in 64-bit mode. It is not supported in compatibility mode.
The shift count is masked to five bits (0-31) for 32-bit operands and six bits (0-63) for 64-bit operands. Failure to mask the count manually before execution may result in unintended shift distances.