1 files changed, 32 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index ecc7f0b1650..2cbc071f74e 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -92,6 +92,38 @@ static bool getARMStoreDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
   return false;
 }
 
+static bool getARMLoadDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
+                                      std::string &Info) {
+  if (STI.getFeatureBits() & llvm::ARM::ModeThumb)
+    return false;
+
+  assert(MI.getNumOperands() >= 4 && "expected >= 4 arguments");
+  bool ListContainsPC = false, ListContainsLR = false;
+  for (unsigned OI = 4, OE = MI.getNumOperands(); OI < OE; ++OI) {
+    assert(MI.getOperand(OI).isReg() && "expected register");
+    switch (MI.getOperand(OI).getReg()) {
+    default:
+      break;
+    case ARM::LR:
+      ListContainsLR = true;
+      break;
+    case ARM::PC:
+      ListContainsPC = true;
+      break;
+    case ARM::SP:
+      Info = "use of SP in the list is deprecated";
+      return true;
+    }
+  }
+
+  if (ListContainsPC && ListContainsLR) {
+    Info = "use of LR and PC simultaneously in the list is deprecated";
+    return true;
+  }
+
+  return false;
+}
+
 #define GET_INSTRINFO_MC_DESC
 #include "ARMGenInstrInfo.inc"