On 09/04/2016 02:12 PM, Uros Bizjak wrote:
As shown in the PR [1], combine is able to simplify lowpart CONST_VECTOR constant pool reference to its inner-mode reference. However, plus_constant was not able to extract the constant from narrowed access.Attached patch teaches plus_constant how to handle this situation.
Ok. It looks like accesses to non-lowpart subregs would be handled by not optimizing them as well rather than crashing.
Bernd
