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re PR tree-optimization/38885 (missed FRE with BIT_FIELD_REF and vectors)
authorRichard Guenther <rguenther@suse.de>
Wed, 5 Oct 2011 14:35:15 +0000 (14:35 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Wed, 5 Oct 2011 14:35:15 +0000 (14:35 +0000)
commitc867aba0c04643ea47cec651cb270e6d09c17f28
tree3088e902d6379ea1f7ad70c2358f94e554dcb80dtree
parent484db665a35edd7c5e4112331665da4dfe57affdcommit | diff
re PR tree-optimization/38885 (missed FRE with BIT_FIELD_REF and vectors)

2011-10-05  Richard Guenther  <rguenther@suse.de>

PR tree-optimization/38885
* tree-ssa-sccvn.c (vn_reference_lookup_3): Handle partial reads
from constants.

* gcc.dg/tree-ssa/ssa-fre-33.c: New testcase.

From-SVN: r179556
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-33.c [new file with mode: 0644] blob
gcc/tree-ssa-sccvn.c diff | blob | history