diff options
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -1594,7 +1594,8 @@ rtx_equal_for_loop_p (x, y, movables, regs) } /* If X contains any LABEL_REF's, add REG_LABEL notes for them to all - insns in INSNS which use the reference. */ + insns in INSNS which use the reference. LABEL_NUSES for CODE_LABEL + references is incremented once for each added note. */ static void add_label_notes (x, insns) @@ -1615,8 +1616,12 @@ add_label_notes (x, insns) mark_jump_label for additional information). */ for (insn = insns; insn; insn = NEXT_INSN (insn)) if (reg_mentioned_p (XEXP (x, 0), insn)) - REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_LABEL, XEXP (x, 0), - REG_NOTES (insn)); + { + REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_LABEL, XEXP (x, 0), + REG_NOTES (insn)); + if (LABEL_P (XEXP (x, 0))) + LABEL_NUSES (XEXP (x, 0))++; + } } fmt = GET_RTX_FORMAT (code); |