Use PLI to load up large constants if -mcpu=future.
2019-12-17 Michael Meissner <meissner@linux.ibm.com> * config/rs6000/rs6000.c (num_insns_constant_gpr): Return 1 if the constant can be loaded with PLI if -mcpu=future. * config/rs6000/rs6000.md (movdi_internal64): Add alternative to use PLI to load up 34-bit constants if -mcpu=future. From-SVN: r279474
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