diff options
Diffstat (limited to 'gcc/lower-subreg.c')
| -rw-r--r-- | gcc/lower-subreg.c | 29 |
1 files changed, 2 insertions, 27 deletions
diff --git a/gcc/lower-subreg.c b/gcc/lower-subreg.c index c3b29a8..2192260 100644 --- a/gcc/lower-subreg.c +++ b/gcc/lower-subreg.c @@ -586,7 +586,7 @@ move_libcall_note (rtx old_start, rtx new_start) static void remove_retval_note (rtx insn1) { - rtx note0, insn0, note1, insn; + rtx note0, insn0, note1; note1 = find_reg_note (insn1, REG_RETVAL, NULL); if (note1 == NULL_RTX) @@ -597,19 +597,6 @@ remove_retval_note (rtx insn1) remove_note (insn0, note0); remove_note (insn1, note1); - - for (insn = insn0; insn != insn1; insn = NEXT_INSN (insn)) - { - while (1) - { - rtx note; - - note = find_reg_note (insn, REG_NO_CONFLICT, NULL); - if (note == NULL_RTX) - break; - remove_note (insn, note); - } - } } /* Resolve any decomposed registers which appear in register notes on @@ -642,7 +629,6 @@ resolve_reg_notes (rtx insn) note = *pnote; switch (REG_NOTE_KIND (note)) { - case REG_NO_CONFLICT: case REG_DEAD: case REG_UNUSED: if (resolve_reg_p (XEXP (note, 0))) @@ -897,7 +883,7 @@ resolve_simple_move (rtx set, rtx insn) static bool resolve_clobber (rtx pat, rtx insn) { - rtx reg, note; + rtx reg; enum machine_mode orig_mode; unsigned int words, i; int ret; @@ -906,17 +892,6 @@ resolve_clobber (rtx pat, rtx insn) if (!resolve_reg_p (reg) && !resolve_subreg_p (reg)) return false; - /* If this clobber has a REG_LIBCALL note, then it is the initial - clobber added by emit_no_conflict_block. We were able to - decompose the register, so we no longer need the clobber. */ - note = find_reg_note (insn, REG_LIBCALL, NULL_RTX); - if (note != NULL_RTX) - { - remove_retval_note (XEXP (note, 0)); - delete_insn (insn); - return true; - } - orig_mode = GET_MODE (reg); words = GET_MODE_SIZE (orig_mode); words = (words + UNITS_PER_WORD - 1) / UNITS_PER_WORD; |