Move implementation of isAssumeLikeIntrinsic into IntrinsicInst

This is remove dependency on ValueTracking in the future patch.

Differential Revision: https://reviews.llvm.org/D96079

llvm/include/llvm/IR/IntrinsicInst.h

@@ -82,6 +82,29 @@ public:
     }
   }
 
+  // Checks if the intrinsic is an annotation.
+  bool isAssumeLikeIntrinsic() const {
+    switch (getIntrinsicID()) {
+    default: break;
+    case Intrinsic::assume:
+    case Intrinsic::sideeffect:
+    case Intrinsic::pseudoprobe:
+    case Intrinsic::dbg_declare:
+    case Intrinsic::dbg_value:
+    case Intrinsic::dbg_label:
+    case Intrinsic::invariant_start:
+    case Intrinsic::invariant_end:
+    case Intrinsic::lifetime_start:
+    case Intrinsic::lifetime_end:
+    case Intrinsic::experimental_noalias_scope_decl:
+    case Intrinsic::objectsize:
+    case Intrinsic::ptr_annotation:
+    case Intrinsic::var_annotation:
+      return true;
+    }
+    return false;
+  }
+
   // Methods for support type inquiry through isa, cast, and dyn_cast:
   static bool classof(const CallInst *I) {
     if (const Function *CF = I->getCalledFunction())

llvm/lib/Analysis/ValueTracking.cpp

@@ -519,27 +519,8 @@ static bool isEphemeralValueOf(const Instruction *I, const Value *E) {
 
 // Is this an intrinsic that cannot be speculated but also cannot trap?
 bool llvm::isAssumeLikeIntrinsic(const Instruction *I) {
-  if (const CallInst *CI = dyn_cast<CallInst>(I))
+  if (const IntrinsicInst *CI = dyn_cast<IntrinsicInst>(I))
-    if (Function *F = CI->getCalledFunction())
+    return CI->isAssumeLikeIntrinsic();
-      switch (F->getIntrinsicID()) {
-      default: break;
-      // FIXME: This list is repeated from NoTTI::getIntrinsicCost.
-      case Intrinsic::assume:
-      case Intrinsic::sideeffect:
-      case Intrinsic::pseudoprobe:
-      case Intrinsic::dbg_declare:
-      case Intrinsic::dbg_value:
-      case Intrinsic::dbg_label:
-      case Intrinsic::invariant_start:
-      case Intrinsic::invariant_end:
-      case Intrinsic::lifetime_start:
-      case Intrinsic::lifetime_end:
-      case Intrinsic::experimental_noalias_scope_decl:
-      case Intrinsic::objectsize:
-      case Intrinsic::ptr_annotation:
-      case Intrinsic::var_annotation:
-        return true;
-      }
 
   return false;
 }