[PATCH] Fix scev tuplification bug (PR tree-optimization/37416)
Tue Dec 9 22:43:00 GMT 2008
On Tue, Dec 9, 2008 at 4:19 PM, Jakub Jelinek <firstname.lastname@example.org> wrote:
> Tuplification resulted in some loops to have unknown number of iterations
> computed. The problem is that follow_ssa_edge_in_rhs before tuplification
> handled NOP_EXPR, but as it is GIMPLE_UNARY_RHS, it doesn't handle it
> Fixed thusly, bootstrapped/regtested on x86_64-linux and tested that
> on the testcase from PR in vect dump symbolic number of iterations is
> printed again as in 4.3 and the loop is vectorized.
> I'd appreciate some
> help with the testcase for this (in which dump to look at, on which arches
> to run the test (e.g. if short is as wide as int, I'm not sure if it should
> pass, etc.).
Ira should be able to help with this.
> Ok for trunk?
> 2008-12-09 Jakub Jelinek <email@example.com>
> PR tree-optimization/37416
> * tree-scalar-evolution.c (follow_ssa_edge_in_rhs): Handle NOP_EXPR.
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