[Bug rtl-optimization/44659] Combiner fails to match QI cmp patterns with upper 8bit register
hjl dot tools at gmail dot com
gcc-bugzilla@gcc.gnu.org
Thu Jun 24 22:41:00 GMT 2010
------- Comment #1 from hjl dot tools at gmail dot com 2010-06-24 22:41 -------
X86 backend has special support for
(zero_extract:SI (reg:M N) (const_int 8) (const_int 8))
If backend provides zero_extract, shouldn't we preserve it?
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
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Component|target |rtl-optimization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44659
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