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| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-05-28 06:27:31 +0000 |
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| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-05-28 06:27:31 +0000 |
| commit | 67c5e2a952c5f2871b559a48603a8bc1ff038346 (patch) | |
| tree | 01cb54144d0b7a3428f399cddba1a9e459851788 /gcc/jump.c | |
| parent | b32ed978e15933278f6330e02bccd379cbcbc33f (diff) | |
| download | gcc-67c5e2a952c5f2871b559a48603a8bc1ff038346.tar.gz | |
* rtl.h (skip_consecutive_labels): Declare.
* emit-rtl.c (skip_consecutive_labels): New function.
* reorg.c (relax_delay_slots, dbr_schedule): Use it.
* jump.c (follow_jumps): Say what null return values mean.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@82357 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/jump.c')
| -rw-r--r-- | gcc/jump.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/jump.c b/gcc/jump.c index 2b46f7bc991..6ead3220773 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -999,6 +999,7 @@ sets_cc0_p (rtx x) /* Follow any unconditional jump at LABEL; return the ultimate label reached by any such chain of jumps. + Return null if the chain ultimately leads to a return instruction. If LABEL is not followed by a jump, return LABEL. If the chain loops or we can't find end, return LABEL, since that tells caller to avoid changing the insn. |