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| author | John David Anglin <dave@hiauly1.hia.nrc.ca> | 2001-01-02 00:58:27 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2001-01-01 17:58:27 -0700 |
| commit | 5b1ef594574c48fc88045d143efe913f704e3f09 (patch) | |
| tree | c12363c0e9a70d4af1ff930ffa68b983b514f4e9 /gcc/loop.c | |
| parent | 5be1aac9125764200d1c8a430cb8e580998c96d2 (diff) | |
| download | gcc-5b1ef594574c48fc88045d143efe913f704e3f09.tar.gz | |
loop.c (add_label_notes): Increment the label usage count when a note is added to an insn which refers to...
* loop.c (add_label_notes): Increment the label usage count when
a note is added to an insn which refers to a CODE_LABEL.
* gcse.c (add_label_notes): Likewise.
From-SVN: r38603
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index 8faacaf3e02..a504ed65c88 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -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); |