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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-05-29 16:53:46 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-05-29 16:53:46 +0000 |
| commit | 61512c5442ccf60ad078d8af1569d69fcbf487f3 (patch) | |
| tree | c2e12f795a472858ce2552909194ce2d7ba71110 /gcc/haifa-sched.c | |
| parent | 13dab7c335d1bb8b420cffd6181b5046aae9740e (diff) | |
| download | gcc-61512c5442ccf60ad078d8af1569d69fcbf487f3.tar.gz | |
* haifa-sched.c (schedule_block): Do not count USE and CLOBBER
insns against the issue rate.
* sched-deps.c (sched_create_groups_for_libcalls): New function.
(sched_analyze): Use it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54004 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/haifa-sched.c')
| -rw-r--r-- | gcc/haifa-sched.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index 63a31352a5b..a03b9b346b4 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -2179,7 +2179,10 @@ schedule_block (b, rgn_n_insns) can_issue_more = (*targetm.sched.variable_issue) (sched_dump, sched_verbose, insn, can_issue_more); - else + /* A naked CLOBBER or USE generates no instruction, so do + not count them against the issue rate. */ + else if (GET_CODE (PATTERN (insn)) != USE + && GET_CODE (PATTERN (insn)) != CLOBBER) can_issue_more--; schedule_insn (insn, &ready, clock_var); |