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author | Andrew Trick <atrick@apple.com> | 2012-06-05 21:11:27 +0000 |
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committer | Andrew Trick <atrick@apple.com> | 2012-06-05 21:11:27 +0000 |
commit | b7e0289fb320c8440ba5eed121a8b932dbd806a2 (patch) | |
tree | d2b65520c1191a79fa7dbccaf1947a82ede9d1ca /include/llvm/CodeGen/ScheduleDAGInstrs.h | |
parent | 1d72dadddbd3ec9a393dbaadda4c459ab1c4aeb1 (diff) | |
download | external_llvm-b7e0289fb320c8440ba5eed121a8b932dbd806a2.zip external_llvm-b7e0289fb320c8440ba5eed121a8b932dbd806a2.tar.gz external_llvm-b7e0289fb320c8440ba5eed121a8b932dbd806a2.tar.bz2 |
misched: API for minimum vs. expected latency.
Minimum latency determines per-cycle scheduling groups.
Expected latency determines critical path and cost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158021 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/ScheduleDAGInstrs.h')
-rw-r--r-- | include/llvm/CodeGen/ScheduleDAGInstrs.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/ScheduleDAGInstrs.h b/include/llvm/CodeGen/ScheduleDAGInstrs.h index 968cc56..874f9f1 100644 --- a/include/llvm/CodeGen/ScheduleDAGInstrs.h +++ b/include/llvm/CodeGen/ScheduleDAGInstrs.h @@ -291,11 +291,15 @@ namespace llvm { /// virtual void computeLatency(SUnit *SU); - /// computeOperandLatency - Override dependence edge latency using + /// computeOperandLatency - Return dependence edge latency using /// operand use/def information /// - virtual void computeOperandLatency(SUnit *Def, SUnit *Use, - SDep& dep) const; + /// FindMin may be set to get the minimum vs. expected latency. Minimum + /// latency is used for scheduling groups, while expected latency is for + /// instruction cost and critical path. + virtual unsigned computeOperandLatency(SUnit *Def, SUnit *Use, + const SDep& dep, + bool FindMin = false) const; /// schedule - Order nodes according to selected style, filling /// in the Sequence member. |