From ef2d6d99c0d35e46dce7fff6b999a3a1fc08aecc Mon Sep 17 00:00:00 2001
From: Jinsong Ji <jji@us.ibm.com>
Date: Tue, 11 Jun 2019 17:40:39 +0000
Subject: [PowerPC] Enable MachinePipeliner for P9 with -ppc-enable-pipeliner

Implement necessary target hooks to enable MachinePipeliner for P9 only.
The pass is off by default, can be enabled with -ppc-enable-pipeliner for P9.

Differential Revision: https://reviews.llvm.org/D62164

llvm-svn: 363085
---
 llvm/lib/Target/PowerPC/PPCTargetMachine.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/lib/Target/PowerPC/PPCTargetMachine.cpp')

diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index da1121bac9c..fcaf7d6e3ee 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -488,6 +488,9 @@ void PPCPassConfig::addPreRegAlloc() {
   }
   if (EnableExtraTOCRegDeps)
     addPass(createPPCTOCRegDepsPass());
+
+  if (getOptLevel() != CodeGenOpt::None)
+    addPass(&MachinePipelinerID);
 }
 
 void PPCPassConfig::addPreSched2() {
-- 
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