From ce4a94223ea08c13ba644b2f8c2dde8a2b1511fb Mon Sep 17 00:00:00 2001 From: Joern Rennecke Date: Wed, 24 Jul 2013 20:12:49 +0000 Subject: re PR rtl-optimization/57968 (MODE_EXIT switches inserted too early) PR rtl-optimization/57968 * mode-switching.c (create_pre_exit): Allow instructions that don't set a return register to need a non-exit mode. From-SVN: r201225 --- gcc/mode-switching.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'gcc/mode-switching.c') diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c index 70a77d0..8ea8ca3 100644 --- a/gcc/mode-switching.c +++ b/gcc/mode-switching.c @@ -330,12 +330,10 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes) break; } if (!targetm.calls.function_value_regno_p (copy_start)) - { - last_insn = return_copy; - continue; - } - copy_num - = hard_regno_nregs[copy_start][GET_MODE (copy_reg)]; + copy_num = 0; + else + copy_num + = hard_regno_nregs[copy_start][GET_MODE (copy_reg)]; /* If the return register is not likely spilled, - as is the case for floating point on SH4 - then it might @@ -372,6 +370,11 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes) forced_late_switch = 1; break; } + if (copy_num == 0) + { + last_insn = return_copy; + continue; + } if (copy_start >= ret_start && copy_start + copy_num <= ret_end) -- cgit v1.1