[LVI] Improve LazyValueInfo compile time performance

[oota-llvm.git] / lib / CodeGen / MachineFunction.cpp

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index bd6f8771e7b46afbb578f1d944450bafe4ebd8f1..cf9213b84c41abfb2b29e33cc3c589a4b4ed50a4 100644 (file)
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -26,6 +26,7 @@
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/Passes.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/Function.h"
@@ -79,6 +80,7 @@ MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
   Alignment = STI->getTargetLowering()->getMinFunctionAlignment();
 
   // FIXME: Shouldn't use pref alignment if explicit alignment is set on Fn.
+  // FIXME: Use Function::optForSize().
   if (!Fn->hasFnAttribute(Attribute::OptimizeForSize))
     Alignment = std::max(Alignment,
                          STI->getTargetLowering()->getPrefFunctionAlignment());
@@ -89,6 +91,8 @@ MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
   assert(TM.isCompatibleDataLayout(getDataLayout()) &&
          "Can't create a MachineFunction using a Module with a "
          "Target-incompatible DataLayout attached\n");
+
+  PSVManager = llvm::make_unique<PseudoSourceValueManager>();
 }
 
 MachineFunction::~MachineFunction() {