X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAnalysis.cpp;h=4731af5089ac3927fc942cc0a6a23d68ac069195;hb=0a230e0d985625a3909cb78fd867a3abaf434565;hp=9723f8080c8cb58960259574db637200c06e6946;hpb=5c34e08b9fff9d4df2421e4f41ff15b85f638dd1;p=oota-llvm.git

diff --git a/lib/CodeGen/Analysis.cpp b/lib/CodeGen/Analysis.cpp
index 9723f8080c8..4731af5089a 100644
--- a/lib/CodeGen/Analysis.cpp
+++ b/lib/CodeGen/Analysis.cpp
@@ -261,6 +261,32 @@ static bool sameNoopInput(const Value *V1, const Value *V2,
             TLI.getPointerTy().getSizeInBits() == 
               cast<IntegerType>(I->getType())->getBitWidth())
           NoopInput = Op;
+      } else if (isa<CallInst>(I)) {
+        // Look through call
+        for (User::const_op_iterator i = I->op_begin(),
+                                     // Skip Callee
+                                     e = I->op_end() - 1;
+             i != e; ++i) {
+          unsigned attrInd = i - I->op_begin() + 1;
+          if (cast<CallInst>(I)->paramHasAttr(attrInd, Attribute::Returned) &&
+              isNoopBitcast((*i)->getType(), I->getType(), TLI)) {
+            NoopInput = *i;
+            break;
+          }
+        }
+      } else if (isa<InvokeInst>(I)) {
+        // Look through invoke
+        for (User::const_op_iterator i = I->op_begin(),
+                                     // Skip BB, BB, Callee
+                                     e = I->op_end() - 3;
+             i != e; ++i) {
+          unsigned attrInd = i - I->op_begin() + 1;
+          if (cast<InvokeInst>(I)->paramHasAttr(attrInd, Attribute::Returned) &&
+              isNoopBitcast((*i)->getType(), I->getType(), TLI)) {
+            NoopInput = *i;
+            break;
+          }
+        }
       }
     }