[llvm] r290909 - [CodeGen] Further simplify returned call operand logic. NFC.

[Ahmed Bougacha via llvm-commits]

Author: ab
Date: Tue Jan  3 15:42:43 2017
New Revision: 290909

URL: http://llvm.org/viewvc/llvm-project?rev=290909&view=rev
Log:
[CodeGen] Further simplify returned call operand logic. NFC.

As Pete points out in r290905, CallSite lets us avoid duplicating this!

Modified:
    llvm/trunk/lib/CodeGen/Analysis.cpp

Modified: llvm/trunk/lib/CodeGen/Analysis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/Analysis.cpp?rev=290909&r1=290908&r2=290909&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/Analysis.cpp (original)
+++ llvm/trunk/lib/CodeGen/Analysis.cpp Tue Jan  3 15:42:43 2017
@@ -272,14 +272,8 @@ static const Value *getNoopInput(const V
                TLI.allowTruncateForTailCall(Op->getType(), I->getType())) {
       DataBits = std::min(DataBits, I->getType()->getPrimitiveSizeInBits());
       NoopInput = Op;
-    } else if (auto *CI = dyn_cast<CallInst>(I)) {
-      // Look through call operands.
-      Value *ReturnedOp = CI->getReturnedArgOperand();
-      if (ReturnedOp && isNoopBitcast(ReturnedOp->getType(), I->getType(), TLI))
-        NoopInput = ReturnedOp;
-    } else if (auto *II = dyn_cast<InvokeInst>(I)) {
-      // Look through invoke operands.
-      Value *ReturnedOp = II->getReturnedArgOperand();
+    } else if (auto CS = ImmutableCallSite(I)) {
+      const Value *ReturnedOp = CS.getReturnedArgOperand();
       if (ReturnedOp && isNoopBitcast(ReturnedOp->getType(), I->getType(), TLI))
         NoopInput = ReturnedOp;
     } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(V)) {