[pypy-svn] r49047 - pypy/branch/remove-extcompiler-rctypes/pypy/translator/c

[cfbolz at codespeak.net]

Author: cfbolz
Date: Sat Nov 24 18:08:55 2007
New Revision: 49047

Modified:
   pypy/branch/remove-extcompiler-rctypes/pypy/translator/c/support.py
Log:
delete old commented out code


Modified: pypy/branch/remove-extcompiler-rctypes/pypy/translator/c/support.py
==============================================================================
--- pypy/branch/remove-extcompiler-rctypes/pypy/translator/c/support.py	(original)
+++ pypy/branch/remove-extcompiler-rctypes/pypy/translator/c/support.py	Sat Nov 24 18:08:55 2007
@@ -137,44 +137,6 @@
             return '{%s}' % ', '.join(lines)
 
 
-##def gen_assignments(assignments):
-##    # Generate a sequence of assignments that is possibly reordered
-##    # to avoid clashes -- i.e. do the equivalent of a tuple assignment,
-##    # reading all sources first, writing all targets next, but optimized
-
-##    allsources = []
-##    src2dest = {}
-##    types = {}
-##    for typename, dest, src in assignments:
-##        if src != dest:   # ignore 'v=v;'
-##            allsources.append(src)
-##            src2dest.setdefault(src, []).append(dest)
-##            types[dest] = typename
-
-##    for starting in allsources:
-##        # starting from some starting variable, follow a chain of assignments
-##        #     'vn=vn-1; ...; v3=v2; v2=v1; v1=starting;'
-##        v = starting
-##        srcchain = []
-##        while src2dest.get(v):
-##            srcchain.append(v)
-##            v = src2dest[v].pop(0)
-##            if v == starting:
-##                break    # loop
-##        if not srcchain:
-##            continue   # already done in a previous chain
-##        srcchain.reverse()   # ['vn-1', ..., 'v2', 'v1', 'starting']
-##        code = []
-##        for pair in zip([v] + srcchain[:-1], srcchain):
-##            code.append('%s = %s;' % pair)
-##        if v == starting:
-##            # assignment loop 'starting=vn-1; ...; v2=v1; v1=starting;'
-##            typename = types[starting]
-##            tmpdecl = cdecl(typename, 'tmp')
-##            code.insert(0, '{ %s = %s;' % (tmpdecl, starting))
-##            code[-1] = '%s = tmp; }' % (srcchain[-2],)
-##        yield ' '.join(code)
-
 def gen_assignments(assignments):
     # Generate a sequence of assignments that is possibly reordered
     # to avoid clashes -- i.e. do the equivalent of a tuple assignment,