From f0757b0edc1ef3d1998485d3f74cadaa3f7180a0 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 21 Apr 2010 01:34:56 +0000
Subject: [PATCH] Add more const qualifiers on TargetMachine and friends.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101977 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/SelectionDAGISel.h       |  2 +-
 include/llvm/Target/TargetLowering.h          | 11 ++++++-----
 lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp |  2 +-
 lib/CodeGen/SelectionDAG/TargetLowering.cpp   |  3 ++-
 lib/Target/PowerPC/PPCISelLowering.cpp        |  4 ++--
 5 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/include/llvm/CodeGen/SelectionDAGISel.h b/include/llvm/CodeGen/SelectionDAGISel.h
index a6d383c3ab1..b2688bba8b3 100644
--- a/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/include/llvm/CodeGen/SelectionDAGISel.h
@@ -51,7 +51,7 @@ public:
   CodeGenOpt::Level OptLevel;
   static char ID;
 
-  explicit SelectionDAGISel(TargetMachine &tm,
+  explicit SelectionDAGISel(const TargetMachine &tm,
                             CodeGenOpt::Level OL = CodeGenOpt::Default);
   virtual ~SelectionDAGISel();
   
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index abec42b4de2..ce624bca46b 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -104,12 +104,13 @@ public:
   };
 
   /// NOTE: The constructor takes ownership of TLOF.
-  explicit TargetLowering(TargetMachine &TM, TargetLoweringObjectFile *TLOF);
+  explicit TargetLowering(const TargetMachine &TM,
+                          const TargetLoweringObjectFile *TLOF);
   virtual ~TargetLowering();
 
-  TargetMachine &getTargetMachine() const { return TM; }
+  const TargetMachine &getTargetMachine() const { return TM; }
   const TargetData *getTargetData() const { return TD; }
-  TargetLoweringObjectFile &getObjFileLowering() const { return TLOF; }
+  const TargetLoweringObjectFile &getObjFileLowering() const { return TLOF; }
 
   bool isBigEndian() const { return !IsLittleEndian; }
   bool isLittleEndian() const { return IsLittleEndian; }
@@ -1551,9 +1552,9 @@ public:
   }
 
 private:
-  TargetMachine &TM;
+  const TargetMachine &TM;
   const TargetData *TD;
-  TargetLoweringObjectFile &TLOF;
+  const TargetLoweringObjectFile &TLOF;
 
   /// PointerTy - The type to use for pointers, usually i32 or i64.
   ///
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 7c2c5282f29..b9a42f47180 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -164,7 +164,7 @@ MachineBasicBlock *TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
 // SelectionDAGISel code
 //===----------------------------------------------------------------------===//
 
-SelectionDAGISel::SelectionDAGISel(TargetMachine &tm, CodeGenOpt::Level OL) :
+SelectionDAGISel::SelectionDAGISel(const TargetMachine &tm, CodeGenOpt::Level OL) :
   MachineFunctionPass(&ID), TM(tm), TLI(*tm.getTargetLowering()),
   FuncInfo(new FunctionLoweringInfo(TLI)),
   CurDAG(new SelectionDAG(tm, *FuncInfo)),
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 5c3992ea061..33c8d1a36ff 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -480,7 +480,8 @@ static void InitCmpLibcallCCs(ISD::CondCode *CCs) {
 }
 
 /// NOTE: The constructor takes ownership of TLOF.
-TargetLowering::TargetLowering(TargetMachine &tm,TargetLoweringObjectFile *tlof)
+TargetLowering::TargetLowering(const TargetMachine &tm,
+                               const TargetLoweringObjectFile *tlof)
   : TM(tm), TD(TM.getTargetData()), TLOF(*tlof) {
   // All operations default to being supported.
   memset(OpActions, 0, sizeof(OpActions));
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 1ecf2d003a0..894436c558c 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -397,7 +397,7 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
 /// getByValTypeAlignment - Return the desired alignment for ByVal aggregate
 /// function arguments in the caller parameter area.
 unsigned PPCTargetLowering::getByValTypeAlignment(const Type *Ty) const {
-  TargetMachine &TM = getTargetMachine();
+  const TargetMachine &TM = getTargetMachine();
   // Darwin passes everything on 4 byte boundary.
   if (TM.getSubtarget<PPCSubtarget>().isDarwin())
     return 4;
@@ -5039,7 +5039,7 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
 
 SDValue PPCTargetLowering::PerformDAGCombine(SDNode *N,
                                              DAGCombinerInfo &DCI) const {
-  TargetMachine &TM = getTargetMachine();
+  const TargetMachine &TM = getTargetMachine();
   SelectionDAG &DAG = DCI.DAG;
   DebugLoc dl = N->getDebugLoc();
   switch (N->getOpcode()) {
-- 
2.34.1