The MLRISC Library is a framework for retargetable and optimizing compiler back ends. The MLRISC Library is distributed with SML/NJ. Due to differences between SML/NJ and MLton, this library will not work out-of-the box with MLton.
As of 20230526, MLton includes a port of the MLRISC Library synchronized with SML/NJ version 110.99.3.
Usage
-
You can import a sub-library of the MLRISC Library into an MLB file with:
MLB file Description $(SML_LIB)/mlrisc-lib/mlb/ALPHA.mlb
The ALPHA backend
$(SML_LIB)/mlrisc-lib/mlb/AMD64.mlb
The AMD64 backend
$(SML_LIB)/mlrisc-lib/mlb/AMD64-Peephole.mlb
The AMD64 peephole optimizer
$(SML_LIB)/mlrisc-lib/mlb/CCall.mlb
$(SML_LIB)/mlrisc-lib/mlb/CCall-sparc.mlb
$(SML_LIB)/mlrisc-lib/mlb/CCall-x86-64.mlb
$(SML_LIB)/mlrisc-lib/mlb/CCall-x86.mlb
$(SML_LIB)/mlrisc-lib/mlb/Control.mlb
$(SML_LIB)/mlrisc-lib/mlb/Graphs.mlb
$(SML_LIB)/mlrisc-lib/mlb/HPPA.mlb
The HPPA backend
$(SML_LIB)/mlrisc-lib/mlb/IA32.mlb
The IA32 backend
$(SML_LIB)/mlrisc-lib/mlb/IA32-Peephole.mlb
The IA32 peephole optimizer
$(SML_LIB)/mlrisc-lib/mlb/Lib.mlb
$(SML_LIB)/mlrisc-lib/mlb/MLRISC.mlb
$(SML_LIB)/mlrisc-lib/mlb/MLTREE.mlb
$(SML_LIB)/mlrisc-lib/mlb/Peephole.mlb
$(SML_LIB)/mlrisc-lib/mlb/PPC.mlb
The PPC backend
$(SML_LIB)/mlrisc-lib/mlb/RA.mlb
$(SML_LIB)/mlrisc-lib/mlb/SPARC.mlb
The Sparc backend
$(SML_LIB)/mlrisc-lib/mlb/StagedAlloc.mlb
$(SML_LIB)/mlrisc-lib/mlb/Visual.mlb
-
If you are porting a project from SML/NJ’s CompilationManager to MLton’s ML Basis system using
cm2mlb
, note that the following map is included by default:# MLRISC Library $SMLNJ-MLRISC $(SML_LIB)/mlrisc-lib/mlb
This will automatically convert a
$SMLNJ-MLRISC/MLRISC.cm
import in an input.cm
file into a$(SML_LIB)/mlrisc-lib/mlb/MLRISC.mlb
import in the output.mlb
file.
Details
The following changes were made to the MLRISC Library, in addition to
deriving the .mlb
files from the .cm
files:
-
eliminate sequential
withtype
expansions: Most could be rewritten as a sequence of type definitions and datatype definitions. -
eliminate higher-order functors: Every higher-order functor definition and application could be uncurried in the obvious way.
-
eliminate
where <str> = <str>
: Quite painful to expand out all the flexible types in the respective structures. Furthermore, many of the implied type equalities aren’t needed, but it’s too hard to pick out the right ones. -
library/array-noneq.sml
(added, not exported): Implementssignature ARRAY_NONEQ
, similar tosignature ARRAY
from the Basis Library, but replacing the latter’seqtype 'a array = 'a array
andtype 'a vector = 'a Vector.vector
withtype 'a array
andtype 'a vector
. Thus, array-like containers may matchARRAY_NONEQ
, whereas only the pervasive'a array
container may matchARRAY
. (SML/NJ’s implementation ofsignature ARRAY
omits the type realizations.) -
library/dynamic-array.sml
andlibrary/hash-array.sml
(modifed): Replaceinclude ARRAY
withinclude ARRAY_NONEQ
; see above.