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Hello! Apparently, not all Haswell processors have TSX. Attached patch removes PTA_RTM from default Haswell flags. PTA_HLX still makes sense for Haswell processors, since the prefix is ignored on non-TSX processors. 2014-05-08 Uros Bizjak <ubizjak@gmail.com> PR target/59952 * config/i386/i386.c (PTA_HASWELL): Remove PTA_RTM. Bootstrapped and regression tested on x86_64-pc-linux-gnu. The patch is committed on mainline, will be backported to all relevant release branches. Uros.
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