[Bug rtl-optimization/45739] static evaluation of SSE intrinsics (pxor)

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2010-09-21 12:23 -------
Created an attachment (id=21856)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21856&action=view)
gcc46-pr45739.patch

Fix.  For further optimizations (like vector A | ~0, A | ~A, A ^ ~0, A & ~0), I
guess we'd need something like CONST_ALL_ONES_RTX (mode) and sharing that in
const_tiny_rtx.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45739