Halide 22.0.0 Halide compiler and libraries

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Deinterleave.h
Go to the documentation of this file.
1#ifndef DEINTERLEAVE_H
2#define DEINTERLEAVE_H
3
4/** \file
5 *
6 * Defines methods for splitting up a vector into the even lanes and
7 * the odd lanes. Useful for optimizing expressions such as select(x %
8 * 2, f(x/2), g(x/2))
9 */
10
11#include "Expr.h"
12
13 namespace Halide {
14 namespace Internal {
15
16/** Extract the odd-numbered lanes in a vector */
17 Expr extract_odd_lanes(const Expr &a);
18
19/** Extract the even-numbered lanes in a vector */
20 Expr extract_even_lanes(const Expr &a);
21
22/** Extract the nth lane of a vector */
23 Expr extract_lane(const Expr &vec, int lane);
24
25/** Look through a statement for expressions of the form select(ramp %
26 * 2 == 0, a, b) and replace them with calls to an interleave
27 * intrinsic */
28 Stmt rewrite_interleavings(const Stmt &s);
29
30 void deinterleave_vector_test();
31
32} // namespace Internal
33} // namespace Halide
34
35#endif
Expr.h
Base classes for Halide expressions (Halide::Expr) and statements (Halide::Internal::Stmt)
Halide::Internal::extract_lane
Expr extract_lane(const Expr &vec, int lane)
Extract the nth lane of a vector.
Halide::Internal::deinterleave_vector_test
void deinterleave_vector_test()
Halide::Internal::extract_odd_lanes
Expr extract_odd_lanes(const Expr &a)
Extract the odd-numbered lanes in a vector.
Halide::Internal::rewrite_interleavings
Stmt rewrite_interleavings(const Stmt &s)
Look through a statement for expressions of the form select(ramp % 2 == 0, a, b) and replace them wit...
Halide::Internal::extract_even_lanes
Expr extract_even_lanes(const Expr &a)
Extract the even-numbered lanes in a vector.
Halide
This file defines the class FunctionDAG, which is our representation of a Halide pipeline,...
Definition AbstractGenerator.h:19
Halide::LinkageType::Internal
@ Internal
Not visible externally, similar to 'static' linkage in C.
Halide::cast
Internal::ConstantInterval cast(Type t, const Internal::ConstantInterval &a)
Cast operators for ConstantIntervals.
Halide::Expr
A fragment of Halide syntax.
Definition Expr.h:258
Halide::Internal::Stmt
A reference-counted handle to a statement node.
Definition Expr.h:427