Re: [patch,avr] Fix PR77326: CC_NONE might clobber condition code

2016-09-20 Thread Denis Chertykov
2016-09-20 13:07 GMT+03:00 Georg-Johann Lay : > This fixes the case of CC_NONE (insn attribute for cc is "none"): > > Even in cases where the instructions of an insn do not change the condition > code of the machine, they still might change some registers by clobber, set, > etc. If one such regist

[patch,avr] Fix PR77326: CC_NONE might clobber condition code

2016-09-20 Thread Georg-Johann Lay
This fixes the case of CC_NONE (insn attribute for cc is "none"): Even in cases where the instructions of an insn do not change the condition code of the machine, they still might change some registers by clobber, set, etc. If one such register overlaps an expression stored in cc_status.value1