MC: Constify MCSubtargetInfo in getDeprecationInfo(), NFC

There's no reason to be able to mutate `MCSubtargetInfo` in
`getDeprecationInfo()`.  Constify the reference.

llvm-svn: 241693

3 files changed, 8 insertions, 7 deletions

diff --git a/llvm/include/llvm/MC/MCInstrDesc.h b/llvm/include/llvm/MC/MCInstrDesc.h
index 3209a2ce040..6a582e82d00 100644
--- a/llvm/include/llvm/MC/MCInstrDesc.h
+++ b/llvm/include/llvm/MC/MCInstrDesc.h
@@ -154,7 +154,8 @@ public:
 
   // A complex method to determine is a certain is deprecated or not, and return
   // the reason for deprecation.
-  bool (*ComplexDeprecationInfo)(MCInst &, MCSubtargetInfo &, std::string &);
+  bool (*ComplexDeprecationInfo)(MCInst &, const MCSubtargetInfo &,
+                                 std::string &);
 
   /// \brief Returns the value of the specific constraint if
   /// it is set. Returns -1 if it is not set.
@@ -170,7 +171,7 @@ public:
 
   /// \brief Returns true if a certain instruction is deprecated and if so
   /// returns the reason in \p Info.
-  bool getDeprecatedInfo(MCInst &MI, MCSubtargetInfo &STI,
+  bool getDeprecatedInfo(MCInst &MI, const MCSubtargetInfo &STI,
                          std::string &Info) const;
 
   /// \brief Return the opcode number for this descriptor.
diff --git a/llvm/lib/MC/MCInstrDesc.cpp b/llvm/lib/MC/MCInstrDesc.cpp
index decc2d84b25..5be2fa1b30b 100644
--- a/llvm/lib/MC/MCInstrDesc.cpp
+++ b/llvm/lib/MC/MCInstrDesc.cpp
@@ -19,7 +19,7 @@
 
 using namespace llvm;
 
-bool MCInstrDesc::getDeprecatedInfo(MCInst &MI, MCSubtargetInfo &STI,
+bool MCInstrDesc::getDeprecatedInfo(MCInst &MI, const MCSubtargetInfo &STI,
                                     std::string &Info) const {
   if (ComplexDeprecationInfo)
     return ComplexDeprecationInfo(MI, STI, Info);
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 97823fb9100..51bf769083e 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -31,7 +31,7 @@ using namespace llvm;
 #define GET_REGINFO_MC_DESC
 #include "ARMGenRegisterInfo.inc"
 
-static bool getMCRDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
+static bool getMCRDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
                                   std::string &Info) {
   if (STI.getFeatureBits()[llvm::ARM::HasV7Ops] &&
       (MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 15) &&
@@ -63,7 +63,7 @@ static bool getMCRDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
   return false;
 }
 
-static bool getITDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
+static bool getITDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
                                  std::string &Info) {
   if (STI.getFeatureBits()[llvm::ARM::HasV8Ops] && MI.getOperand(1).isImm() &&
       MI.getOperand(1).getImm() != 8) {
@@ -75,7 +75,7 @@ static bool getITDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
   return false;
 }
 
-static bool getARMStoreDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
+static bool getARMStoreDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
                                        std::string &Info) {
   assert(!STI.getFeatureBits()[llvm::ARM::ModeThumb] &&
          "cannot predicate thumb instructions");
@@ -92,7 +92,7 @@ static bool getARMStoreDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
   return false;
 }
 
-static bool getARMLoadDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
+static bool getARMLoadDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
                                       std::string &Info) {
   assert(!STI.getFeatureBits()[llvm::ARM::ModeThumb] &&
          "cannot predicate thumb instructions");