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On Tue, Oct 30, 2012 at 01:14:40PM +0100, Marc Glisse wrote:On Tue, 30 Oct 2012, Marek Polacek wrote:
On Tue, Oct 30, 2012 at 08:05:13AM +0100, Marc Glisse wrote:Hello,
one more optimization that needed help for vectors, it crashed on (x<y)<0. Because of PR 55001, testcases are awkward to add (I could do a x86-only one if needed).
bootstrap+testsuite.
2012-10-30 Marc Glisse <marc.glisse@inria.fr>
* fold-const.c (fold_binary_op_with_conditional_arg): Handle vectors. (fold_binary_loc): call it for VEC_COND_EXPR.
Capital C instead of lowercase.
Patch missing?
Indeed, thanks for the notice.
This regressed FAIL: g++.dg/other/vector-compare.C (internal compiler error) FAIL: g++.dg/other/vector-compare.C (test for excess errors) on i686-linux.
The problem is that tree-vect-generic.c doesn't expand BLKmode VEC_COND_EXPR piecewise. So, either fold-const on this optimization needs to test whether expand_vec_cond_expr_p is true for the chosen pair of comparison type and operand type, or tree-vect-generic.c needs to be tought to expand VEC_COND_EXPR piecewise if expand_vec_cond_expr_p is not true for the particular VEC_COND_EXPR.
-- Marc Glisse
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