SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
| Assembly syntax: | VLMBD src1, src2, dst |
| Operation: | Left-most bit detect |
| Classification: | 3-input 1-output |
| Bit width: | 40-bit |
| Delay slot: | one |
| C statement: | As follows |
Depending on src2 being zero or not, VLMBD searches for 0 or 1 in src1, starting from bit 39. Bit position where the first 0 or 1 occurs is returned, and -1 is returned if it’s not found.