Halide 19.0.0
Halide compiler and libraries
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#include <Dimension.h>
Public Member Functions | |
Expr | min () const |
Get an expression representing the minimum coordinates of this image parameter in the given dimension. | |
Expr | extent () const |
Get an expression representing the extent of this image parameter in the given dimension. | |
Expr | max () const |
Get an expression representing the maximum coordinates of this image parameter in the given dimension. | |
Expr | stride () const |
Get an expression representing the stride of this image in the given dimension. | |
Dimension | set_min (const Expr &min) |
Set the min in a given dimension to equal the given expression. | |
Dimension | set_extent (const Expr &extent) |
Set the extent in a given dimension to equal the given expression. | |
Dimension | set_stride (const Expr &stride) |
Set the stride in a given dimension to equal the given value. | |
Dimension | set_bounds (const Expr &min, const Expr &extent) |
Set the min and extent in one call. | |
Dimension | set_estimate (const Expr &min, const Expr &extent) |
Set the min and extent estimates in one call. | |
Expr | min_estimate () const |
Expr | extent_estimate () const |
Dimension | dim (int i) const |
Get a different dimension of the same buffer. | |
Definition at line 16 of file Dimension.h.
Expr Halide::Internal::Dimension::min | ( | ) | const |
Get an expression representing the minimum coordinates of this image parameter in the given dimension.
Expr Halide::Internal::Dimension::extent | ( | ) | const |
Get an expression representing the extent of this image parameter in the given dimension.
Expr Halide::Internal::Dimension::max | ( | ) | const |
Get an expression representing the maximum coordinates of this image parameter in the given dimension.
Expr Halide::Internal::Dimension::stride | ( | ) | const |
Get an expression representing the stride of this image in the given dimension.
Set the min in a given dimension to equal the given expression.
Setting the mins to zero may simplify some addressing math.
Set the extent in a given dimension to equal the given expression.
Images passed in that fail this check will generate a runtime error. Returns a reference to the ImageParam so that these calls may be chained.
This may help the compiler generate better code. E.g:
tells the compiler that dimension zero must be of extent 100, which may result in simplification of boundary checks. The value can be an arbitrary expression:
declares that im is a square image (of unknown size), whereas:
tells the compiler that the extent is a multiple of 32.
Set the stride in a given dimension to equal the given value.
This is particularly helpful to set when vectorizing. Known strides for the vectorized dimension generate better code.
Set the min and extent in one call.
Set the min and extent estimates in one call.
These values are only used by the auto-scheduler and/or the RunGen tool/
Expr Halide::Internal::Dimension::min_estimate | ( | ) | const |
Expr Halide::Internal::Dimension::extent_estimate | ( | ) | const |
Dimension Halide::Internal::Dimension::dim | ( | int | i | ) | const |
Get a different dimension of the same buffer.