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I noticed while looking into a register allocation issue in 4.1.1, that regclass was ignoring '!' attribute so it would sometimes give the wrong result so we get performance issue (selecting GPR instead of FPR). So I saw that IRA also ignore it too which seems wrong and seems like the code was copied from regclass. preprocess_constraints and find_reloads both take '!' into account. Can someone benchmark this on x86 and PPC? I can only really benchmark with a 4.3 or 4.1.1 based compiler with a subset of SPEC. The 4.1.1 based compiler gets a nice but small 0.6% performance increase and a small code decrease. Thanks, Andrew Pinski ChangeLog: * regclass.c (record_reg_classes): Take into account '!'. (record_reg_classes): Likewise.
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