From: Hal Finkel <hfinkel@anl.gov>
Date: Fri, 5 Apr 2013 23:28:58 +0000 (+0000)
Subject: Correct the PPC A2 misprediction penalty
X-Git-Tag: android-x86-6.0-r1~154^2~779
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=de80951ae9bb86ab6b4183f0d482d426c02ab708;p=android-x86%2Fexternal-llvm.git

Correct the PPC A2 misprediction penalty

The manual states that there is a minimum of 13 cycles from when the
mispredicted branch is issued to when the correct branch target is
issued.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178925 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCScheduleA2.td b/lib/Target/PowerPC/PPCScheduleA2.td
index ae084aa0e8c..8d5838e54e1 100644
--- a/lib/Target/PowerPC/PPCScheduleA2.td
+++ b/lib/Target/PowerPC/PPCScheduleA2.td
@@ -759,7 +759,7 @@ def PPCA2Model : SchedMachineModel {
   let LoadLatency = 6; // Optimistic load latency assuming bypass.
                        // This is overriden by OperandCycles if the
                        // Itineraries are queried instead.
-  let MispredictPenalty = 6;
+  let MispredictPenalty = 13;
 
   let Itineraries = PPCA2Itineraries;
 }