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Hi, After benchmarking on a number of cores and measuring good improvements across the board on the Cortex-A9 , on some cores (Cortex M) we saw no great improvements but no regressions either, we should just turn this on by default for the ARM port as in general it appears to give us a good win. Theoretically there's no reason why this will not benefit us by default on single issue machines as it prevents the first sched pass from having excessive register pressure. I have turned this on by default for O1_PLUS level of optimization so that if someone uses -O1 -fschedule-insns they get the benefit of having sched-pressure on by default. Applied. Thanks, Ramana 2012-07-17 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org> Ulrich Weigand <ulrich.weigand@linaro.org> * common/config/arm/arm-common.c (arm_option_optimization_table): Enable -fsched-pressure by default while optimizing. * config/arm/arm.c (arm_option_override): Use the alternate scheduler pressure algorithm by default.
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