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* ifcvt.c (dead_or_predicable): Use df_simulate_find_defs and
authorbernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 22 Apr 2010 10:42:21 +0000 (10:42 +0000)
committerMasaki Muranaka <monaka@monami-software.com>
Sun, 23 May 2010 04:45:58 +0000 (13:45 +0900)
commitd6d469ee0ba08b505f17dd30a75751c8a598568d
tree3289e5f960c57c0934cb2416593d2e0c07e78611
parent9dd20086bedd4cfc75f3407f296aa12ff4d5fc1e
* ifcvt.c (dead_or_predicable): Use df_simulate_find_defs and
df_simulate_find_noclobber_defs as appropriate.  Keep track of an
extra set merge_set_noclobber, and use it to relax the final test
slightly.
* df.h (df_simulate_find_noclobber_defs): Declare.
* df-problems.c (df_simulate_find_defs): Don't ignore partial or
conditional defs.
(df_simulate_find_noclobber_defs): New function.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158639 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/ifcvt.c