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authorAndrew Trick <atrick@apple.com>2011-03-05 08:04:11 +0000
committerAndrew Trick <atrick@apple.com>2011-03-05 08:04:11 +0000
commitab2e3e2d7074207e2a4bb15e2913fa83795bb1ca (patch)
tree35d50eb5e14b6bde17797b5ff035bf3f596d78d8 /lib/CodeGen
parente0ef509aeb47b396cf1bdc170ca4f468f799719f (diff)
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Missing comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127068 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
-rw-r--r--lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index 035d027afe..8821b85a85 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -2228,6 +2228,8 @@ bool ilp_ls_rr_sort::isReady(SUnit *SU, unsigned CurCycle) const {
return true;
}
+// list-ilp is currently an experimental scheduler that allows various
+// heuristics to be enabled prior to the normal register reduction logic.
bool ilp_ls_rr_sort::operator()(SUnit *left, SUnit *right) const {
if (left->isCall || right->isCall)
// No way to compute latency of calls.