Add const.

llvm-svn: 205013
diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp
index 7118a7f..4e6af63 100644
--- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp
@@ -43,7 +43,7 @@
   virtual void processFixupValue(const MCAssembler &Asm,
                                  const MCAsmLayout &Layout,
                                  const MCFixup &Fixup, const MCFragment *DF,
-                                 MCValue &Target, uint64_t &Value,
+                                 const MCValue &Target, uint64_t &Value,
                                  bool &IsResolved);
 };
 } // end anonymous namespace
@@ -52,8 +52,8 @@
                                           const MCAsmLayout &Layout,
                                           const MCFixup &Fixup,
                                           const MCFragment *DF,
-                                          MCValue &Target, uint64_t &Value,
-                                          bool &IsResolved) {
+                                          const MCValue &Target,
+                                          uint64_t &Value, bool &IsResolved) {
   // The ADRP instruction adds some multiple of 0x1000 to the current PC &
   // ~0xfff. This means that the required offset to reach a symbol can vary by
   // up to one step depending on where the ADRP is in memory. For example:
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
index 8b7b7ea..824dee0 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
@@ -156,7 +156,7 @@
   /// if necessary.
   void processFixupValue(const MCAssembler &Asm, const MCAsmLayout &Layout,
                          const MCFixup &Fixup, const MCFragment *DF,
-                         MCValue &Target, uint64_t &Value,
+                         const MCValue &Target, uint64_t &Value,
                          bool &IsResolved) override;
 
 
@@ -592,7 +592,7 @@
                                       const MCAsmLayout &Layout,
                                       const MCFixup &Fixup,
                                       const MCFragment *DF,
-                                      MCValue &Target, uint64_t &Value,
+                                      const MCValue &Target, uint64_t &Value,
                                       bool &IsResolved) {
   const MCSymbolRefExpr *A = Target.getSymA();
   // Some fixups to thumb function symbols need the low bit (thumb bit)
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
index e11a5f3..190aa14 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
@@ -254,7 +254,7 @@
                                        const MCAsmLayout &Layout,
                                        const MCFixup &Fixup,
                                        const MCFragment *DF,
-                                       MCValue &Target,
+                                       const MCValue &Target,
                                        uint64_t &Value,
                                        bool &IsResolved) {
   // At this point we'll ignore the value returned by adjustFixupValue as
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
index 082a340..e827fdf 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
@@ -83,7 +83,8 @@
 
   void processFixupValue(const MCAssembler &Asm, const MCAsmLayout &Layout,
                          const MCFixup &Fixup, const MCFragment *DF,
-                         MCValue &Target, uint64_t &Value, bool &IsResolved);
+                         const MCValue &Target, uint64_t &Value,
+                         bool &IsResolved);
 
 }; // class MipsAsmBackend