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

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Revision 2397 - (download) (annotate)
Sat Jul 6 20:50:46 2013 UTC (6 years, 3 months ago) by cchiw
File size: 3352 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 : 1 : 2 :
ISub : 1 : 2 :
IMul : 1 : 2 :
IDiv : 1 : 2 :
INeg : 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 : 
#
# 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
# 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
# PosToImgSpace<I>(V,u) -- transforms the world-space position u into the image-space specified by V.
PosToImgSpace : ImageInfo.info : 1 : 2 : transform a world-space position to image-space
# TensorToWorldSpace<I,ty>(V,u) -- transforms the image-space tensor u to from V's image space to world space
TensorToWorldSpace : ImageInfo.info * ty : 1 : 2 : transform an image-space gradient to world-space
LoadImage : ImageInfo.info : 1 : 1 : image-file loading
# 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 :
#
# inputs
Input            : ty * string * string  : 1 : 0 :
InputWithDefault : ty * string * string  : 1 : 1 :
#
# printing support for debugging
!Print : tys : 0 : * : print strings

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