[#llvm-PatternMatch-ShiftLike_match]
= xref:llvm.adoc[llvm]::xref:llvm/PatternMatch.adoc[PatternMatch]::ShiftLike_match
:relfileprefix: ../../
:mrdocs:

Matches a shift by a constant, or the value itself with amount zero.

== Synopsis

Declared in `<llvm/IR/PatternMatch.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename LHS_t,
    unsigned int Opcode>
struct ShiftLike_match;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/PatternMatch/ShiftLike_match/2constructor.adoc[`ShiftLike_match`]         [.small]#[constructor]#
| Construct a shift‐or‐self matcher.
| xref:llvm/PatternMatch/ShiftLike_match/match.adoc[`match`] 
| Match `V` as Opcode with a constant amount, or as L with R set to 0.
|===


== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:llvm/PatternMatch/ShiftLike_match/L.adoc[`L`] 
| Sub‐pattern for the shifted value.
| xref:llvm/PatternMatch/ShiftLike_match/R.adoc[`R`] 
| Bound constant shift amount; set to zero when matching the value itself.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/PatternMatch/m_AShrOrSelf.adoc[`m_AShrOrSelf`]
| Matches ashr L, ConstShAmt or L itself (R will be set to zero in this case).
| xref:llvm/PatternMatch/m_LShrOrSelf.adoc[`m_LShrOrSelf`]
| Matches lshr L, ConstShAmt or L itself (R will be set to zero in this case).
| xref:llvm/PatternMatch/m_ShlOrSelf.adoc[`m_ShlOrSelf`]
| Matches shl L, ConstShAmt or L itself (R will be set to zero in this case).
|===


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