[IR] Use CallBase to reduce code duplication. NFC

Noticed in the asm-goto patch. Callbr needs to go here too. One cast and call is better than 3.

Differential Revision: https://reviews.llvm.org/D57295

llvm-svn: 352563

diff --git a/llvm/lib/IR/Instruction.cpp b/llvm/lib/IR/Instruction.cpp
index 0a9434e..e031886 100644 (file)
--- a/llvm/lib/IR/Instruction.cpp
+++ b/llvm/lib/IR/Instruction.cpp
@@ -515,9 +515,8 @@ bool Instruction::mayReadFromMemory() const {
   case Instruction::CatchRet:
     return true;
   case Instruction::Call:
-    return !cast<CallInst>(this)->doesNotAccessMemory();
   case Instruction::Invoke:
-    return !cast<InvokeInst>(this)->doesNotAccessMemory();
+    return !cast<CallBase>(this)->doesNotAccessMemory();
   case Instruction::Store:
     return !cast<StoreInst>(this)->isUnordered();
   }
@@ -535,9 +534,8 @@ bool Instruction::mayWriteToMemory() const {
   case Instruction::CatchRet:
     return true;
   case Instruction::Call:
-    return !cast<CallInst>(this)->onlyReadsMemory();
   case Instruction::Invoke:
-    return !cast<InvokeInst>(this)->onlyReadsMemory();
+    return !cast<CallBase>(this)->onlyReadsMemory();
   case Instruction::Load:
     return !cast<LoadInst>(this)->isUnordered();
   }