fc559584fa
Commit r15-436-g44e7855e did not fix PR115013 for PRU because SMALL_REGISTER_CLASS_P is not returning an accurate value for the PRU backend. Word mode for PRU backend is defined as 8-bit, yet all ALU operations are preferred in 32-bit mode. Thus checking whether a register class contains a single word_mode register would not classify the actually single SImode register classes as small. This affected the multiplication source and destination register classes. Fix by implementing TARGET_CLASS_LIKELY_SPILLED_P to treat all register classes with SImode or smaller size as likely spilled. This in turn corrects the behaviour of SMALL_REGISTER_CLASS_P for PRU. PR rtl-optimization/115013 gcc/ChangeLog: * config/pru/pru.cc (pru_class_likely_spilled_p): Implement to mark classes containing one SImode register as likely spilled. (TARGET_CLASS_LIKELY_SPILLED_P): Define. Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu> |
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