From 0cafa139c01aa9d5072b185d686a05b9d8ab1ee7 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Fri, 22 Jun 2012 22:27:36 +0000
Subject: Remove ProcessImplicitDefs.h which was unused.

The ProcessImplicitDefs class can be local to its implementation file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159041 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/ProcessImplicitDefs.cpp | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

(limited to 'lib/CodeGen')

diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp
index 7735fa2bb1..74b0f59bac 100644
--- a/lib/CodeGen/ProcessImplicitDefs.cpp
+++ b/lib/CodeGen/ProcessImplicitDefs.cpp
@@ -9,12 +9,11 @@
 
 #define DEBUG_TYPE "processimplicitdefs"
 
-#include "llvm/CodeGen/ProcessImplicitDefs.h"
-
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/LiveVariables.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/Passes.h"
@@ -25,6 +24,32 @@
 
 using namespace llvm;
 
+namespace {
+/// Process IMPLICIT_DEF instructions and make sure there is one implicit_def
+/// for each use. Add isUndef marker to implicit_def defs and their uses.
+class ProcessImplicitDefs : public MachineFunctionPass {
+  const TargetInstrInfo *TII;
+  const TargetRegisterInfo *TRI;
+  MachineRegisterInfo *MRI;
+  LiveVariables *LV;
+
+  bool CanTurnIntoImplicitDef(MachineInstr *MI, unsigned Reg,
+                              unsigned OpIdx,
+                              SmallSet<unsigned, 8> &ImpDefRegs);
+
+public:
+  static char ID;
+
+  ProcessImplicitDefs() : MachineFunctionPass(ID) {
+    initializeProcessImplicitDefsPass(*PassRegistry::getPassRegistry());
+  }
+
+  virtual void getAnalysisUsage(AnalysisUsage &au) const;
+
+  virtual bool runOnMachineFunction(MachineFunction &fn);
+};
+} // end anonymous namespace
+
 char ProcessImplicitDefs::ID = 0;
 char &llvm::ProcessImplicitDefsID = ProcessImplicitDefs::ID;
 
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