left

speculable  exu stream  exu block  compute phase   operation   in the logical value domain  

native on: all

Count leading false in or construct bool vector with leading false.

---

left(op v) → op r0

operands: like Leftv XX:i

This counts the leading false elements in a bool vector.

Core	In Slots	[▸]  Latencies
Tin	E0	1
Copper	E0	1
Silver	E0 E1 E2 E3	1
Gold	E0	1

---

left(op x, width w) → op r0

operands: like Lefts xx:X

Constructs a bool vector with w elements of which the leading x elements are false and the rest true.

Core	In Slots	[▸]  Latencies
Tin	E0
Copper	E0
Silver	E0 E1 E2 E3
Gold	E0

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