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re PR target/41081 (redundant ZERO_EXTENDs)
authorAlan Modra <amodra@bigpond.net.au>
Sun, 23 Aug 2009 02:57:26 +0000 (02:57 +0000)
committerAlan Modra <amodra@gcc.gnu.org>
Sun, 23 Aug 2009 02:57:26 +0000 (12:27 +0930)
commite25b7843ec7184bf740693005ab35619ab9ed561
tree8a20e3006159e44742462f90f0e5276bb50e8f4ctree
parent94d342534efdfcdbc6410c9247ec81a2c13217e9commit | diff
re PR target/41081 (redundant ZERO_EXTENDs)

PR target/41081
* fwprop.c (try_fwprop_subst): Allow multiple sets.
(get_reg_use_in): New function.
(forward_propagate_subreg): Propagate through subreg of zero_extend
or sign_extend.

From-SVN: r151022
gcc/ChangeLog diff | blob | blame | history
gcc/fwprop.c diff | blob | blame | history
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