Author: Armin Rigo <ar...@tunes.org>
Branch:
Changeset: r52500:02dc2f6160ee
Date: 2012-02-15 09:48 +0100
http://bitbucket.org/pypy/pypy/changeset/02dc2f6160ee/
Log: Add some more sign-extending instructions. Two of them were already
elsewhere in the list.
diff --git a/pypy/translator/c/gcc/trackgcroot.py
b/pypy/translator/c/gcc/trackgcroot.py
--- a/pypy/translator/c/gcc/trackgcroot.py
+++ b/pypy/translator/c/gcc/trackgcroot.py
@@ -471,8 +471,8 @@
return []
IGNORE_OPS_WITH_PREFIXES = dict.fromkeys([
- 'cmp', 'test', 'set', 'sahf', 'lahf', 'cltd', 'cld', 'std',
- 'rep', 'movs', 'lods', 'stos', 'scas', 'cwtl', 'cwde', 'prefetch',
+ 'cmp', 'test', 'set', 'sahf', 'lahf', 'cld', 'std',
+ 'rep', 'movs', 'lods', 'stos', 'scas', 'cwde', 'prefetch',
# floating-point operations cannot produce GC pointers
'f',
'cvt', 'ucomi', 'comi', 'subs', 'subp' , 'adds', 'addp', 'xorp',
@@ -485,6 +485,8 @@
'bswap', 'bt', 'rdtsc',
'punpck', 'pshufd', 'pcmp', 'pand', 'psllw', 'pslld', 'psllq',
'paddq', 'pinsr',
+ # sign-extending moves should not produce GC pointers
+ 'cbtw', 'cwtl', 'cwtd', 'cltd', 'cltq', 'cqto',
# zero-extending moves should not produce GC pointers
'movz',
# locked operations should not move GC pointers, at least so far
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