diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 15 |
1 files changed, 7 insertions, 8 deletions
@@ -7284,8 +7284,9 @@ delete_trivially_dead_insns (rtx insns, int nreg) timevar_push (TV_DELETE_TRIVIALLY_DEAD); /* First count the number of times each register is used. */ counts = xcalloc (nreg, sizeof (int)); - for (insn = next_real_insn (insns); insn; insn = next_real_insn (insn)) - count_reg_usage (insn, counts, 1); + for (insn = insns; insn; insn = NEXT_INSN (insn)) + if (INSN_P (insn)) + count_reg_usage (insn, counts, 1); /* Go from the last insn to the first and delete insns that only set unused registers or copy a register to itself. As we delete an insn, remove @@ -7294,15 +7295,13 @@ delete_trivially_dead_insns (rtx insns, int nreg) The first jump optimization pass may leave a real insn as the last insn in the function. We must not skip that insn or we may end up deleting code that is not really dead. */ - insn = get_last_insn (); - if (! INSN_P (insn)) - insn = prev_real_insn (insn); - - for (; insn; insn = prev) + for (insn = get_last_insn (); insn; insn = prev) { int live_insn = 0; - prev = prev_real_insn (insn); + prev = PREV_INSN (insn); + if (!INSN_P (insn)) + continue; /* Don't delete any insns that are part of a libcall block unless we can delete the whole libcall block. |