62af27e77b
reg_needs_saving_p is only used when dealing with non-interrupt routines, but it makes sense to extend it to support that context too, and make arm_compute_save_reg0_reg12_mask use it. Save only live registers for non-leaf functions, but assume a callee could clobber any register. 2020-05-15 Christophe Lyon <christophe.lyon@linaro.org> gcc/ * config/arm/arm.c (reg_needs_saving_p): Add support for interrupt routines. (arm_compute_save_reg0_reg12_mask): Use reg_needs_saving_p.
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