Fix a use of uninitialized value. OldCC is set when IsCmpZero || IsSwapped and read...

[oota-llvm.git] / lib / Target / X86 / X86FloatingPoint.cpp

diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index bfc7840398e565a78928de961940c323556c11bd..c8a3ab3082ad895bcd534ec69da122cfe13e969f 100644 (file)
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -23,7 +23,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "x86-codegen"
 #include "X86.h"
 #include "X86InstrInfo.h"
 #include "llvm/ADT/DepthFirstIterator.h"
@@ -45,6 +44,8 @@
 #include <algorithm>
 using namespace llvm;
 
+#define DEBUG_TYPE "x86-codegen"
+
 STATISTIC(NumFXCH, "Number of fxch instructions inserted");
 STATISTIC(NumFP  , "Number of floating point instructions");
 
@@ -59,7 +60,7 @@ namespace {
       memset(RegMap, 0, sizeof(RegMap));
     }
 
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       AU.addRequired<EdgeBundles>();
       AU.addPreservedID(MachineLoopInfoID);
@@ -67,9 +68,9 @@ namespace {
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 
-    virtual bool runOnMachineFunction(MachineFunction &MF);
+    bool runOnMachineFunction(MachineFunction &MF) override;
 
-    virtual const char *getPassName() const { return "X86 FP Stackifier"; }
+    const char *getPassName() const override { return "X86 FP Stackifier"; }
 
   private:
     const TargetInstrInfo *TII; // Machine instruction info.
@@ -430,7 +431,7 @@ bool FPS::processBasicBlock(MachineFunction &MF, MachineBasicBlock &BB) {
     if (FPInstClass == X86II::NotFP)
       continue;  // Efficiently ignore non-fp insts!
 
-    MachineInstr *PrevMI = 0;
+    MachineInstr *PrevMI = nullptr;
     if (I != BB.begin())
       PrevMI = std::prev(I);