More explicit keywords.

llvm-svn: 40757
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.h b/llvm/lib/Target/ARM/ARMISelLowering.h
index 318657e..aba6ab3 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.h
+++ b/llvm/lib/Target/ARM/ARMISelLowering.h
@@ -76,7 +76,7 @@
   class ARMTargetLowering : public TargetLowering {
     int VarArgsFrameIndex;            // FrameIndex for start of varargs area.
   public:
-    ARMTargetLowering(TargetMachine &TM);
+    explicit ARMTargetLowering(TargetMachine &TM);
 
     virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
     virtual const char *getTargetNodeName(unsigned Opcode) const;
diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.h b/llvm/lib/Target/Alpha/AlphaISelLowering.h
index 24e40a5..291a560 100644
--- a/llvm/lib/Target/Alpha/AlphaISelLowering.h
+++ b/llvm/lib/Target/Alpha/AlphaISelLowering.h
@@ -64,7 +64,7 @@
     int VarArgsBase;    // What is the base FrameIndex
     bool useITOF;
   public:
-    AlphaTargetLowering(TargetMachine &TM);
+    explicit AlphaTargetLowering(TargetMachine &TM);
     
     /// LowerOperation - Provide custom lowering hooks for some operations.
     ///
diff --git a/llvm/lib/Target/IA64/IA64ISelLowering.h b/llvm/lib/Target/IA64/IA64ISelLowering.h
index 6bc5534..4a4e771 100644
--- a/llvm/lib/Target/IA64/IA64ISelLowering.h
+++ b/llvm/lib/Target/IA64/IA64ISelLowering.h
@@ -43,7 +43,7 @@
     unsigned GP, SP, RP; // FIXME - clean this mess up
 	  
   public:
-    IA64TargetLowering(TargetMachine &TM);
+    explicit IA64TargetLowering(TargetMachine &TM);
 
     unsigned VirtGPR; // this is public so it can be accessed in the selector
                       // for ISD::RET. add an accessor instead? FIXME
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.h b/llvm/lib/Target/Mips/MipsISelLowering.h
index 0199175..4a62c94 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.h
+++ b/llvm/lib/Target/Mips/MipsISelLowering.h
@@ -53,7 +53,7 @@
     // const MipsSubtarget &MipsSubTarget;
   public:
 
-    MipsTargetLowering(MipsTargetMachine &TM);
+    explicit MipsTargetLowering(MipsTargetMachine &TM);
 
     /// LowerOperation - Provide custom lowering hooks for some operations.
     virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index 245fe53..b6b52ef 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -186,7 +186,7 @@
     int ReturnAddrIndex;              // FrameIndex for return slot.
     const PPCSubtarget &PPCSubTarget;
   public:
-    PPCTargetLowering(PPCTargetMachine &TM);
+    explicit PPCTargetLowering(PPCTargetMachine &TM);
     
     /// getTargetNodeName() - This method returns the name of a target specific
     /// DAG node.
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
index ef48095..55c34a3 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -286,7 +286,7 @@
     int BytesToPopOnReturn;           // Number of arg bytes ret should pop.
     int BytesCallerReserves;          // Number of arg bytes caller makes.
   public:
-    X86TargetLowering(TargetMachine &TM);
+    explicit X86TargetLowering(TargetMachine &TM);
 
     // Return the number of bytes that a function should pop when it returns (in
     // addition to the space used by the return address).