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| author | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-23 16:00:06 +0000 |
|---|---|---|
| committer | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-23 16:00:06 +0000 |
| commit | e95ebfe01248c88832e21726accb01321f20a61e (patch) | |
| tree | ef220d1f1710bdd39aaddf1da18b1709fc794695 /gcc/reorg.c | |
| parent | 40be2320a3646ff02c2caa7459eaccdce2b5c2f4 (diff) | |
| download | gcc-e95ebfe01248c88832e21726accb01321f20a61e.tar.gz | |
2001-07-13 Andrew Haley <aph@redhat.com>
* doc/tm.texi (MD_CAN_REDIRECT_BRANCH): New macro.
* config/sh/sh.h (MD_CAN_REDIRECT_BRANCH): New macro.
* config/sh/sh.c (sh_can_redirect_branch): New function.
* config/sh/sh-protos.h (sh_can_redirect_branch): Declare.
* reorg.c (steal_delay_list_from_target): Use
MD_CAN_REDIRECT_BRANCH to see if redirection is possible.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44269 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/reorg.c')
| -rw-r--r-- | gcc/reorg.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/reorg.c b/gcc/reorg.c index 1f26e7e3751..3177e7117dd 100644 --- a/gcc/reorg.c +++ b/gcc/reorg.c @@ -1272,6 +1272,14 @@ steal_delay_list_from_target (insn, condition, seq, delay_list, || ! single_set (XVECEXP (seq, 0, 0))) return delay_list; +#ifdef MD_CAN_REDIRECT_BRANCH + /* On some targets, branches with delay slots can have a limited + displacement. Give the back end a chance to tell us we can't do + this. */ + if (! MD_CAN_REDIRECT_BRANCH (insn, XVECEXP (seq, 0, 0))) + return delay_list; +#endif + for (i = 1; i < XVECLEN (seq, 0); i++) { rtx trial = XVECEXP (seq, 0, i); |