[#llvm-KnownBits-shl]
= xref:llvm.adoc[llvm]::xref:llvm/KnownBits.adoc[KnownBits]::shl
:relfileprefix: ../../
:mrdocs:

Compute known bits for shl(LHS, RHS). NOTE: RHS (shift amount) bitwidth doesn't need to be the same as LHS.

== Synopsis

Declared in `<llvm/Support/KnownBits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:llvm/KnownBits.adoc[KnownBits]
shl(
    xref:llvm/KnownBits.adoc[KnownBits] const& LHS,
    xref:llvm/KnownBits.adoc[KnownBits] const& RHS,
    bool NUW = false,
    bool NSW = false,
    bool ShAmtNonZero = false);
----

== Return Value

Known bits for shl(LHS, RHS).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *LHS*
| Value being shifted.
| *RHS*
| Shift amount known bits.
| *NUW*
| True if the shift is known not to wrap unsigned.
| *NSW*
| True if the shift is known not to wrap signed.
| *ShAmtNonZero*
| True if the shift amount is known to be non‐zero.
|===


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