Steven Bosscher
5d51714103
re PR rtl-optimization/38711 (ira should not be using df-lr except at -O1.)
PR rtl-optimization/38711 * ira.c (ira): Remove DF_LIVE if the problem is in the stack. (do_reload): Add it back at the end for -O2 and higher. * function.c (thread_prologue_and_epilogue_insns): Use REG_SET_TO_HARD_REG_SET instead of CLEAR_HARD_REG_SET and reg_set_to_hard_reg_set. From-SVN: r192890
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