diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 7c53589d77a..8780f4eb441 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -2596,6 +2596,21 @@ emit_libcall_block (insns, target, result, equiv) { rtx prev, next, first, last, insn; + /* look for any CALL_INSNs in this sequence, and attach a REG_EH_REGION + reg note to indicate that this call cannot throw. (Unless there is + already a REG_EH_REGION note.) */ + + for (insn = insns; insn; insn = NEXT_INSN (insn)) + { + if (GET_CODE (insn) == CALL_INSN) + { + rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX); + if (note == NULL_RTX) + REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, GEN_INT (0), + REG_NOTES (insn)); + } + } + /* First emit all insns that set pseudos. Remove them from the list as we go. Avoid insns that set pseudos which were referenced in previous insns. These can be generated by move_by_pieces, for example, |
