Committed to ARM/embedded-4_6-branch. 2011-09-27 Jiangning Liu <jiangning....@arm.com>
No loop unroll for Os and option has higher priority.
* config/arm/arm-protos.h (unroll_loops): New.
(max_unroll_times): Removed.
* config/arm/arm.c (arm_default_unroll_times): Deleted.
(arm_cortex_m_unroll_times): Removed.
(arm_cortex_m_unroll_loops): New. Set flag_unroll_loops if
not set by users on command line.
(arm_slowmul_tune): Change arm_default_unroll_times to 0.
(arm_fastmul_tune, arm_xscale_tune, arm_9e_tune, arm_v6t2_tune,
arm_cortex_tune, arm_cortex_a9_tune, arm_fa726te_tune): Likewise.
(arm_cortex_v7m_tune): Change arm_cortex_m_unroll_times to
arm_cortex_m_unroll_loops.
(arm_cortex_v6m_tune): Likewise.
(arm_option_override): Change to set flag_unroll_loops and
max_unroll_times for optimization level >=2 and not for size.
Loop_unroll_not_for_os.patch
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