Halide  12.0.1
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_widening_add(const Expr &a, const Expr &b);
15 Expr lower_widening_mul(const Expr &a, const Expr &b);
16 Expr lower_widening_sub(const Expr &a, const Expr &b);
19 
22 
23 Expr lower_saturating_add(const Expr &a, const Expr &b);
24 Expr lower_saturating_sub(const Expr &a, const Expr &b);
25 
26 Expr lower_halving_add(const Expr &a, const Expr &b);
27 Expr lower_halving_sub(const Expr &a, const Expr &b);
30 
31 Expr lower_mul_shift_right(const Expr &a, const Expr &b, const Expr &q);
32 Expr lower_rounding_mul_shift_right(const Expr &a, const Expr &b, const Expr &q);
33 
34 /** Replace one of the above ops with equivalent arithmetic. */
36 
37 /** Replace common arithmetic patterns with intrinsics. */
40 
41 /** The reverse of find_intrinsics. */
44 
45 } // namespace Internal
46 } // namespace Halide
47 
48 #endif
Subtypes for Halide expressions (Halide::Expr) and statements (Halide::Internal::Stmt)
Expr lower_mul_shift_right(const Expr &a, const Expr &b, const Expr &q)
Expr lower_halving_sub(const Expr &a, const Expr &b)
Expr lower_halving_add(const Expr &a, const Expr &b)
Expr lower_rounding_halving_add(const Expr &a, const Expr &b)
Expr lower_widening_shift_left(const Expr &a, const Expr &b)
Expr lower_saturating_add(const Expr &a, const Expr &b)
Expr lower_widening_add(const Expr &a, const Expr &b)
Implement intrinsics with non-intrinsic using equivalents.
Expr lower_widening_shift_right(const Expr &a, const Expr &b)
Expr lower_intrinsics(const Expr &e)
The reverse of find_intrinsics.
Expr lower_rounding_halving_sub(const Expr &a, const Expr &b)
Expr lower_rounding_shift_right(const Expr &a, const Expr &b)
Expr lower_widening_sub(const Expr &a, const Expr &b)
Stmt find_intrinsics(const Stmt &s)
Replace common arithmetic patterns with intrinsics.
Expr lower_intrinsic(const Call *op)
Replace one of the above ops with equivalent arithmetic.
Expr lower_rounding_mul_shift_right(const Expr &a, const Expr &b, const Expr &q)
Expr lower_widening_mul(const Expr &a, const Expr &b)
Expr lower_saturating_sub(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,...
@ Internal
Not visible externally, similar to 'static' linkage in C.
A fragment of Halide syntax.
Definition: Expr.h:256
A function call.
Definition: IR.h:464
A reference-counted handle to a statement node.
Definition: Expr.h:413