From: Hal Finkel <hfinkel@anl.gov>
Date: Sun, 1 Apr 2012 19:23:08 +0000 (+0000)
Subject: Set the default PPC node scheduling preference to ILP (for the embedded cores).
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3f31d492a5d0fadf11290e8453f8c519a89b1302;p=oota-llvm.git

Set the default PPC node scheduling preference to ILP (for the embedded cores).

The 440 and A2 cores have detailed itineraries, and this allows them to be
fully used to maximize throughput.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153845 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 8357e8bbdb3..00f2dcc8dbf 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -5837,3 +5837,12 @@ EVT PPCTargetLowering::getOptimalMemOpType(uint64_t Size,
     return MVT::i32;
   }
 }
+
+Sched::Preference PPCTargetLowering::getSchedulingPreference(SDNode *N) const {
+  unsigned Directive = PPCSubTarget.getDarwinDirective();
+  if (Directive == PPC::DIR_440 || Directive == PPC::DIR_A2)
+    return Sched::ILP;
+
+  return TargetLowering::getSchedulingPreference(N);
+}
+
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index e79229f49b6..6a009896113 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -281,6 +281,7 @@ namespace llvm {
     bool SelectAddressRegImmShift(SDValue N, SDValue &Disp, SDValue &Base,
                                   SelectionDAG &DAG) const;
 
+    Sched::Preference getSchedulingPreference(SDNode *N) const;
 
     /// LowerOperation - Provide custom lowering hooks for some operations.
     ///