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cd5ab6377b
* module/language/cps.scm ($switch): New term. * doc/ref/compiler.texi (CPS in Guile): Add documentation. * module/language/cps.scm (build-term, parse-cps, unparse-cps) * module/language/cps/closure-conversion.scm (compute-non-operator-uses) (compute-singly-referenced-labels, rewrite-shared-closure-calls) (compute-free-vars, convert-one) * module/language/cps/compile-bytecode.scm (compile-function) * module/language/cps/contification.scm (compute-singly-referenced-labels) (compute-contification-candidates, apply-contification) * module/language/cps/cse.scm (compute-truthy-expressions) (forward-cont, term-successors, eliminate-common-subexpressions-in-fun) * module/language/cps/dce.scm (compute-known-allocations) (compute-live-code, process-eliminations) * module/language/cps/devirtualize-integers.scm (compute-use-counts) (peel-trace) * module/language/cps/effects-analysis.scm (compute-effects) * module/language/cps/licm.scm (hoist-one, hoist-in-loop) * module/language/cps/loop-instrumentation.scm (compute-loop-headers) * module/language/cps/peel-loops.scm (rename-cont) * module/language/cps/renumber.scm (sort-labels-locally, renumber) * module/language/cps/rotate-loops.scm (rotate-loop) (rotate-loops-in-function) * module/language/cps/self-references.scm (resolve-self-references) * module/language/cps/simplify.scm (compute-singly-referenced-vars) (eta-reduce, compute-singly-referenced-labels, beta-reduce) * module/language/cps/slot-allocation.scm (compute-defs-and-uses) (add-prompt-control-flow-edges, compute-var-representations) * module/language/cps/specialize-numbers.scm (compute-significant-bits) * module/language/cps/split-rec.scm (compute-free-vars) * module/language/cps/type-fold.scm (local-type-fold) * module/language/cps/types.scm (successor-count, infer-types) * module/language/cps/utils.scm (compute-function-body) (compute-successors, compute-predecessors) * module/language/cps/verify.scm (compute-available-definitions) (check-valid-var-uses, check-arities): Add support for new term.
67 lines
2.6 KiB
Scheme
67 lines
2.6 KiB
Scheme
;;; Continuation-passing style (CPS) intermediate language (IL)
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;; Copyright (C) 2016, 2017, 2018, 2020 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Commentary:
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;;;
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;;; A pass to add "instrument-loop" primcalls at loop headers.
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;;;
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;;; Code:
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(define-module (language cps loop-instrumentation)
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#:use-module (ice-9 match)
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#:use-module (language cps)
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#:use-module (language cps utils)
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#:use-module (language cps with-cps)
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#:use-module (language cps intmap)
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#:use-module (language cps intset)
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#:use-module (language cps renumber)
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#:export (add-loop-instrumentation))
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(define (compute-loop-headers cps)
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(define (maybe-add-header label k headers)
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"Add K to headers if it is a target of a backward branch."
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(if (<= k label)
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(intset-add! headers k)
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headers))
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(define (visit-cont label cont headers)
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(match cont
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(($ $kargs names vars ($ $continue k))
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(maybe-add-header label k headers))
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(($ $kargs names vars ($ $branch kf kt))
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(maybe-add-header label kf (maybe-add-header label kt headers)))
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(($ $kargs names vars ($ $switch kf kt*))
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(fold1 (lambda (k headers) (maybe-add-header label k headers))
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(cons kf kt*)
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headers))
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(_ headers)))
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(persistent-intset (intmap-fold visit-cont cps empty-intset)))
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(define (add-loop-instrumentation cps)
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(define (add-instrumentation label cps)
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(match (intmap-ref cps label)
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(($ $kargs names vars term)
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(with-cps cps
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(letk k ($kargs () () ,term))
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(setk label
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($kargs names vars
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($continue k #f
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($primcall 'instrument-loop #f ()))))))))
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(let* ((cps (renumber cps))
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(headers (compute-loop-headers cps)))
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(with-fresh-name-state cps
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(persistent-intmap (intset-fold add-instrumentation headers cps)))))
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