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View of /branches/vis15/src/compiler/gen/ir/low-ir.spec

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Revision 3506 - (download) (annotate)
Fri Dec 18 04:03:54 2015 UTC (3 years, 9 months ago) by jhr
File size: 4463 byte(s)
working on merge
# 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 : : 1 : 2 : integer addition
ISub : : 1 : 2 :
IMul : : 1 : 2 :
IDiv : : 1 : 2 :
IMod : : 1 : 2 : integer modulo
INeg : : 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
Abs : ty : 1 : 1 :
Max : ty : 1 : 2 :
Min : ty : 1 : 2 :
#
### vector operations
#
VAdd   : int : 1 : 2 :
VSub   : int : 1 : 2 :
VMul   : int : 1 : 2 :
VScale : int : 1 : 2 :
VSum   : int : 1 : 2 :
VNeg   : int : 1 : 1 :
#
# 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
#
# Normalize<n>(v)   -- returns the unit vector in direction u; n is the length ov u
Normalize : int : 1 : 1 :
# Scale<ty>(s,u) -- multiply scalar s time tensor u; ty specifies u's type
Scale : ty : 1 : 2 : scalar*tensor multiplication
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
#
# 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
#
Sqrt   : : 1 : 1 : returns the sqrt(used to replace norm)]
Cos    : : 1 : 1 : returns the cosine
ArcCos : : 1 : 1 : returns the arccosine
Sine   : : 1 : 1 : returns the sine
ArcSin : : 1 : 1 : returns the arcsine
Tan    : : 1 : 1 : returns the Tangent
ArcTan : : 1 : 1 : returns the arcTangent
#
# 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.
Kernel    : Kernel.kernel * int  : 1 : 0 : Kernel<h, k>, where h is the kernel and k is level of differentiation
#
# ImageAddress<I>(V) -- the base address of an image with info I
ImageAddress : ImageInfo.info : 1 : 1 : image base address
#
# ControlIndex<I,ctl,d>(V,i) -- border control for the d'th axis of the image V and index i
ControlIndex : ImageInfo.info * idxctl * int : 1 : 2 :
#
# 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 :
#
# ImageDim<I,i>(V) -- returns the i'th dimension of the image
ImageDim : ImageInfo.info * int : 1 : 1 :
#
# nrrd file loading
LoadSeq   : ty * string : 1 : 0 : load sequence from nrrd file
LoadImage : ty * string : 1 : 0 : load image from nrrd file
#
# printing support for debugging
!Print : tys : 0 : * : print strings

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