Fix regression with -O0 for mips .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203469 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index 3cc1343513..e9053c87f0 100644
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -175,6 +175,9 @@ public:
   virtual bool addInstSelector();
   virtual void addMachineSSAOptimization();
   virtual bool addPreEmitPass();
+
+  virtual bool addPreRegAlloc();
+
 };
 } // namespace
 
@@ -208,6 +211,15 @@ void MipsPassConfig::addMachineSSAOptimization() {
   TargetPassConfig::addMachineSSAOptimization();
 }
 
+bool MipsPassConfig::addPreRegAlloc() {
+  if (getOptLevel() == CodeGenOpt::None) {
+    addPass(createMipsOptimizePICCallPass(getMipsTargetMachine()));
+    return true;
+  }
+  else
+    return false;
+}
+
 void MipsTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
   if (Subtarget.allowMixed16_32()) {
     DEBUG(errs() << "No ");