diff options
Diffstat (limited to 'gcc/resource.c')
| -rw-r--r-- | gcc/resource.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/gcc/resource.c b/gcc/resource.c index 1ee87c0..8380111 100644 --- a/gcc/resource.c +++ b/gcc/resource.c @@ -495,6 +495,8 @@ find_dead_or_set_registers (rtx target, struct resources *res, || GET_CODE (PATTERN (this_jump_insn)) == RETURN) { next = JUMP_LABEL (this_jump_insn); + if (ANY_RETURN_P (next)) + next = NULL_RTX; if (jump_insn == 0) { jump_insn = insn; @@ -562,9 +564,10 @@ find_dead_or_set_registers (rtx target, struct resources *res, AND_COMPL_HARD_REG_SET (scratch, needed.regs); AND_COMPL_HARD_REG_SET (fallthrough_res.regs, scratch); - find_dead_or_set_registers (JUMP_LABEL (this_jump_insn), - &target_res, 0, jump_count, - target_set, needed); + if (!ANY_RETURN_P (JUMP_LABEL (this_jump_insn))) + find_dead_or_set_registers (JUMP_LABEL (this_jump_insn), + &target_res, 0, jump_count, + target_set, needed); find_dead_or_set_registers (next, &fallthrough_res, 0, jump_count, set, needed); @@ -878,7 +881,7 @@ mark_target_live_regs (rtx insns, rtx target, struct resources *res) struct resources set, needed; /* Handle end of function. */ - if (target == 0) + if (target == 0 || ANY_RETURN_P (target)) { *res = end_of_function_needs; return; @@ -1097,8 +1100,9 @@ mark_target_live_regs (rtx insns, rtx target, struct resources *res) struct resources new_resources; rtx stop_insn = next_active_insn (jump_insn); - mark_target_live_regs (insns, next_active_insn (jump_target), - &new_resources); + if (!ANY_RETURN_P (jump_target)) + jump_target = next_active_insn (jump_target); + mark_target_live_regs (insns, jump_target, &new_resources); CLEAR_RESOURCE (&set); CLEAR_RESOURCE (&needed); |