f2ebf2d98e
In this PR, we were trying to set the unroll factor to a value higher than the minimum VF (or more specifically, to a value that doesn't divide the VF). I guess there are two approaches to this: let the target pick any value it likes and make target-independent code pare it back to something that makes sense, or require targets to supply sensible values from the outset. This patch goes for the latter approach. gcc/ PR tree-optimization/105254 * config/aarch64/aarch64.cc (aarch64_vector_costs::determine_suggested_unroll_factor): Take a loop_vec_info as argument. Restrict the unroll factor to values that divide the VF. (aarch64_vector_costs::finish_cost): Update call accordingly. gcc/testsuite/ PR tree-optimization/105254 * g++.dg/vect/pr105254.cc: New test. |
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