[llvm] r178925 - Correct the PPC A2 misprediction penalty

[Hal Finkel]

Author: hfinkel
Date: Fri Apr  5 18:28:58 2013
New Revision: 178925

URL: http://llvm.org/viewvc/llvm-project?rev=178925&view=rev
Log:
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.

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCScheduleA2.td

Modified: llvm/trunk/lib/Target/PowerPC/PPCScheduleA2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCScheduleA2.td?rev=178925&r1=178924&r2=178925&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCScheduleA2.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCScheduleA2.td Fri Apr  5 18:28:58 2013
@@ -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;
 }