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9 commits

Author SHA1 Message Date
Andy Wingo
19113f1ca7 allow case-lambda expressions with no clauses 
* module/ice-9/psyntax-pp.scm:
* module/ice-9/psyntax.scm (case-lambda, case-lambda*): Allow 0
  clauses.

* module/language/scheme/decompile-tree-il.scm (do-decompile):
  (choose-output-names):
* module/language/tree-il.scm (unparse-tree-il):
  (tree-il-fold, post-order!, pre-order!):
* module/language/tree-il/effects.scm (make-effects-analyzer):
* module/language/tree-il/cse.scm (cse):
* module/language/tree-il/debug.scm (verify-tree-il):
* module/language/tree-il/peval.scm (peval): Allow for lambda-body to be
  #f.

* libguile/memoize.c (memoize):
* module/language/tree-il/canonicalize.scm (canonicalize!): Give a body
  to empty case-lambda before evaluating it or compiling it,
  respectively.

* test-suite/tests/optargs.test ("case-lambda", "case-lambda*"): Add
  tests.
 2013-03-09 11:16:31 +01:00
Ludovic Courtès
2c7b7e0f21 cse: Fix out-of-bounds access to the database. 
Fixes <http://bugs.gnu.org/12883>.

* module/language/tree-il/cse.scm (cse)[find-dominating-lexical]: Fix
  computation of the last argument passed to `unroll'.
  Patch by Stefan Israelsson Tampe <stefan.itampe@gmail.com>.
* test-suite/tests/cse.test ("cse")["http://bugs.gnu.org/12883"]: New
  test.
 2012-11-21 23:51:16 +01:00
Andy Wingo
4d1ae11279 cse: expressions evaluated for effect do not provide predicates 
* module/language/tree-il/cse.scm (cse): When trying to fold
  conditionals, only look at entries in the database that were added in
  test context.

* test-suite/tests/cse.test ("cse"): Add a test case.
 2012-06-22 12:33:20 +02:00
Andy Wingo
63216d80de cse passes a lookup procedure to the effects analyzer 
* module/language/tree-il/cse.scm (cse): Arrange to pass a lookup
  procedure to compute-effects, for better effects analysis.
 2012-05-15 17:23:06 +02:00
Andy Wingo
dc1ee62046 CSE in tail position 
* module/language/tree-il/cse.scm (singly-valued-expression?, cse):
  Allow CSE to propagate lexicals to tail positions, if the expression
  is singly-valued.
 2012-05-15 17:20:01 +02:00
Andy Wingo
1fb39dc55f mvoe tree-il=? and tree-il-hash to tree-il.scm 
* module/language/tree-il.scm (tree-il=?, tree-il-hash): Move these
  helpers here, from cse.scm.  Export them.

* module/language/tree-il/cse.scm (cse): Adapt accordingly.
 2012-05-15 12:25:37 +02:00
Andy Wingo
73001b06f6 fix replacement of CSE with lexical-ref 
* module/language/tree-il/cse.scm (cse): Fix dominator unrolling for
  lexical propagation.

* test-suite/tests/cse.test ("cse"): Add test.
 2012-04-23 21:52:24 +02:00
Andy Wingo
3db8f60977 cse hashing tweak 
* module/language/tree-il/cse.scm (cse): Minor tweak to hash depth based
  on time profile of compiling peval.scm.
 2012-04-23 21:52:24 +02:00
Andy Wingo
f66cbb99ee new pass: cse 
* module/language/tree-il/cse.scm: New pass, some simple common
  subexpression elimination with effects analysis.

* test-suite/tests/cse.test: New test.

* test-suite/Makefile.am:
* module/Makefile.am: Adapt.
 2012-04-23 21:52:24 +02:00