Halide  17.0.2
Halide compiler and libraries
FindIntrinsics.h
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1 #ifndef HALIDE_FIND_INTRINSICS_H
2 #define HALIDE_FIND_INTRINSICS_H
3 
4 /** \file
5  * Tools to replace common patterns with more readily recognizable intrinsics.
6  */
7 
8 #include "IR.h"
9 
10 namespace Halide {
11 namespace Internal {
12 
13 /** Implement intrinsics with non-intrinsic using equivalents. */
14 Expr lower_widen_right_add(const Expr &a, const Expr &b);
15 Expr lower_widen_right_mul(const Expr &a, const Expr &b);
16 Expr lower_widen_right_sub(const Expr &a, const Expr &b);
17 Expr lower_widening_add(const Expr &a, const Expr &b);
18 Expr lower_widening_mul(const Expr &a, const Expr &b);
19 Expr lower_widening_sub(const Expr &a, const Expr &b);
20 Expr lower_widening_shift_left(const Expr &a, const Expr &b);
21 Expr lower_widening_shift_right(const Expr &a, const Expr &b);
22 
23 Expr lower_rounding_shift_left(const Expr &a, const Expr &b);
24 Expr lower_rounding_shift_right(const Expr &a, const Expr &b);
25 
26 Expr lower_saturating_add(const Expr &a, const Expr &b);
27 Expr lower_saturating_sub(const Expr &a, const Expr &b);
28 Expr lower_saturating_cast(const Type &t, const Expr &a);
29 
30 Expr lower_halving_add(const Expr &a, const Expr &b);
31 Expr lower_halving_sub(const Expr &a, const Expr &b);
32 Expr lower_rounding_halving_add(const Expr &a, const Expr &b);
33 Expr lower_sorted_avg(const Expr &a, const Expr &b);
34 
35 Expr lower_mul_shift_right(const Expr &a, const Expr &b, const Expr &q);
36 Expr lower_rounding_mul_shift_right(const Expr &a, const Expr &b, const Expr &q);
37 
38 /** Replace one of the above ops with equivalent arithmetic. */
39 Expr lower_intrinsic(const Call *op);
40 
41 /** Replace common arithmetic patterns with intrinsics. */
42 Stmt find_intrinsics(const Stmt &s);
43 Expr find_intrinsics(const Expr &e);
44 
45 /** The reverse of find_intrinsics. */
46 Expr lower_intrinsics(const Expr &e);
47 Stmt lower_intrinsics(const Stmt &s);
48 
49 } // namespace Internal
50 } // namespace Halide
51 
52 #endif
Expr lower_widening_sub(const Expr &a, const Expr &b)
Expr lower_intrinsic(const Call *op)
Replace one of the above ops with equivalent arithmetic.
Expr lower_intrinsics(const Expr &e)
The reverse of find_intrinsics.
Stmt find_intrinsics(const Stmt &s)
Replace common arithmetic patterns with intrinsics.
Expr lower_widening_shift_right(const Expr &a, const Expr &b)
Expr lower_widen_right_mul(const Expr &a, const Expr &b)
Expr lower_saturating_sub(const Expr &a, const Expr &b)
Expr lower_rounding_halving_add(const Expr &a, const Expr &b)
Expr lower_rounding_shift_left(const Expr &a, const Expr &b)
This file defines the class FunctionDAG, which is our representation of a Halide pipeline, and contains methods to using Halide's bounds tools to query properties of it.
Expr lower_widening_mul(const Expr &a, const Expr &b)
Expr lower_halving_sub(const Expr &a, const Expr &b)
Expr lower_rounding_mul_shift_right(const Expr &a, const Expr &b, const Expr &q)
Expr lower_rounding_shift_right(const Expr &a, const Expr &b)
Expr lower_widen_right_add(const Expr &a, const Expr &b)
Implement intrinsics with non-intrinsic using equivalents.
Expr lower_widening_add(const Expr &a, const Expr &b)
Expr lower_mul_shift_right(const Expr &a, const Expr &b, const Expr &q)
Not visible externally, similar to 'static' linkage in C.
Expr lower_halving_add(const Expr &a, const Expr &b)
Expr lower_widen_right_sub(const Expr &a, const Expr &b)
Expr lower_saturating_add(const Expr &a, const Expr &b)
Subtypes for Halide expressions (Halide::Expr) and statements (Halide::Internal::Stmt) ...
Expr lower_saturating_cast(const Type &t, const Expr &a)
Expr lower_widening_shift_left(const Expr &a, const Expr &b)
Expr lower_sorted_avg(const Expr &a, const Expr &b)