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View of /branches/charisee/src/compiler/gen/il/low-il.spec

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Revision 2414 - (download) (annotate)
Mon Aug 19 05:02:14 2013 UTC (6 years, 1 month ago) by cchiw
File size: 3631 byte(s)
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# specification of operators for LowIL version of the IR.  Each line (other than comments)
# specifies an operator using five fields, which are separated by ":".  The fields are
#name
#argument type(optional)
#       result arity
#arity
#comment(optional)
#
# Operations with effects are denoted by a "!" as the first character of the line.
#
# type-indexed arithmetic operations
IAdd : ty : 1 : 2 :
ISub : ty : 1 : 2 :
IMul : ty : 1 : 2 :
IDiv : ty : 1 : 2 :
INeg : ty : 1 : 1 :
Abs : ty : 1 : 1 :
LT : ty : 1 : 2 :
LTE : ty : 1 : 2 :
EQ : ty : 1 : 2 :
NEQ : ty : 1 : 2 :
GT : ty : 1 : 2 :
GTE : ty : 1 : 2 :
Not : : 1 : 1 : boolean negation
Max : : 1 : 2 :
Min : : 1 : 2 :
# Clamp<ty>(lo, hi, x) -- clamps x to the range lo..hi
Clamp : ty : 1 : 3 : clamp argument to range
# Lerp<ty>(a, b, t) -- computes a + t*(b-a)
Lerp : ty : 1 : 3 : linear interpolation between 0 and 1
# Norm<ty>(x) -- returns the norm of the tensor x, which has type ty
Norm : ty : 1 : 1 :
# Normalize<n>(v)   -- returns the unit vector in direction u; n is the length ov u
Normalize : int : 1 : 1 :
PrincipleEvec : ty : 1 : 2 : principle eigenvector; ty is result vector type
EigenVecs2x2 : : 1 : 1 : Eigen vectors and values for 2x2 matrix
EigenVecs3x3 : : 1 : 1 : Eigen vectors and values for 3x3 matrix
EigenVals2x2 : : 1 : 1 : Eigen values for 2x2 matrix
EigenVals3x3 : : 1 : 1 : Eigen values for 3x3 matrix
# Zero<ty>() -- zero tensor
Zero : ty : 1 : 0 : identity matrix
# operations on sequences
# Select<ty,i>(u)  -- select ith element of tuple; ty is tuple type
Select : ty * int : 1 : 1 :
# Index<ty,i>(u)  -- select ith element of sequence; ty is sequence type
Index : ty * int : 1 : 1 :
# Subscript<ty>(u,i) -- select ith element of sequence; ty is type of sequence
Subscript : ty : 1 : 2 : 
# MkDynamic<ty,n> -- make a sequence with type ty{n} into a dynamic sequence
!MkDynamic : ty * int : 1 : 1 : make a fixed-length sequence dynamic
!Append : ty : 2 : 1 : append an element onto a dynamic sequence
!Prepend : ty : 2 : 1 : prepend an element onto a dynamic sequence
!Concat : ty : 2 : 1 : concatenate two dynamic sequences
# Length<ty> -- return the length of a sequence with type ty{}
Length : ty : 1 : 1 : return the length of a dynamic sequence
#
# compute integral parts of reals
Ceiling : int : 1 : 1 : compute real ceiling of a vector
Floor : int : 1 : 1 : compute real floor of a vector
Round : int : 1 : 1 : compute real rounding to nearest integral real of a vector
Trunc : int : 1 : 1 : compute real truncation to integral real of a vector
#
### conversions; the real to int forms are vector ops
IntToReal : : 1 : 1 :
RealToInt : int : 1 : 1 : cast real vector to int vector
#
### image/kernel operations
Transform:Imageinfo.info : 1 : 2 : Pulls transformation matrix from image.
Translate:Imageinfo.info : 1 : 2 : Pulls translation vector from image.

# ImageAddress<I>(V) -- the base address of an image with info I
ImageAddress : ImageInfo.info : 1 : 1 : image base address
# LoadVoxels<I,n>(a) -- load a vector of n voxels from the address a
LoadVoxels : ImageInfo.info * int : 1 : 1 : load a vector of voxel values from an address
# Inside<I,s>(u,V) -- tests to see if image-space position u is inside the volume
# occupied by the image V.  I is the image info and s is the border width
Inside : ImageInfo.info * int : 1 : 2 :
#
# nrrd file loading
LoadSeq   : ty * string                  : 1 : 0 : load sequence from nrrd file
LoadImage : ty * string * ImageInfo.info : 1 : 0 : load image from nrrd file
#
# inputs
Input: input: 0 : 0 : program input
#
# printing support for debugging
!Print : tys : 0 : * : print strings

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