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PR tree-optimization/28632
authorjakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 9 Jul 2010 19:40:03 +0000 (19:40 +0000)
committerjakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 9 Jul 2010 19:40:03 +0000 (19:40 +0000)
commit522b9a028f0c3841112d6c46384c8759cc968a8a
tree9ee1bad5b45f063327a09f35800a76d83344fa62tree | snapshot
parent0ec820421213c3308258f9241363fda0b3133f40commit | diff
PR tree-optimization/28632
* tree-vrp.c (zero_nonzero_bits_from_vr): New function.
(extract_range_from_binary_expr): Further optimize
BIT_AND_EXPR and BIT_IOR_EXPR.

* gcc.dg/tree-ssa/vrp51.c: New test.
* gcc.dg/tree-ssa/vrp52.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162009 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/tree-ssa/vrp51.c [new file with mode: 0644] blob
gcc/testsuite/gcc.dg/tree-ssa/vrp52.c [new file with mode: 0644] blob
gcc/tree-vrp.c diff | blob | history
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