Neuter r117193 as it causes significant post-ra scheduler compile time regression.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117329 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp
index 6b1a59b5ea8c041b7c54f080fd39f8cdb67a22be..9b5d13b12008319e628d30c24c1ab4f651228648 100644 (file)
--- a/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -169,8 +169,8 @@ void ScheduleDAGInstrs::AddSchedBarrierDeps() {
   } else {
     // For others, e.g. fallthrough, conditional branch, assume the exit
     // uses all the registers.
-    for (int i = 0, e = TRI->getNumRegs(); i != e; ++i)
-      Uses[i].push_back(&ExitSU);
+    // FIXME: This causes too much compile time regression. We need to compute
+    // liveout instead.
   }
 }