From 4a1cd9c61e3e648587d33d5f02ddad97e87f16aa Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 21 Apr 2006 17:16:16 +0000
Subject: [PATCH] The BFS scheduler is apparently nondeterminstic (causes many
 llvmgcc bootstrap miscompares).  Switch RISC targets to use the list-td
 scheduler, which isn't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27933 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index e5e462bb3b4..96a81e09383 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3126,9 +3126,12 @@ void SelectionDAGISel::ScheduleAndEmitDAG(SelectionDAG &DAG) {
   default: assert(0 && "Unrecognized scheduling heuristic");
   case defaultScheduling:
     if (TLI.getSchedulingPreference() == TargetLowering::SchedulingForLatency)
-      SL = createSimpleDAGScheduler(noScheduling, DAG, BB);
-    else /* TargetLowering::SchedulingForRegPressure */
+      SL = createTDListDAGScheduler(DAG, BB, CreateTargetHazardRecognizer());
+    else {
+      assert(TLI.getSchedulingPreference() ==
+             TargetLowering::SchedulingForRegPressure && "Unknown sched type!");
       SL = createBURRListDAGScheduler(DAG, BB);
+    }
     break;
   case noScheduling:
     SL = createBFS_DAGScheduler(DAG, BB);