[PATCH] D62791: [CFLGraph] Add support for unary fneg instruction.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: george.burgess.iv, cameron.mcinally.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

I don't know much about this analysis so I'm not sure the best way to test this.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D62791

Files:
  llvm/lib/Analysis/CFLGraph.h


Index: llvm/lib/Analysis/CFLGraph.h
===================================================================
--- llvm/lib/Analysis/CFLGraph.h
+++ llvm/lib/Analysis/CFLGraph.h
@@ -292,6 +292,11 @@
       addAssignEdge(Op2, &Inst);
     }
 
+    void visitUnaryOperator(UnaryOperator &Inst) {
+      auto *Src = Inst.getOperand(0);
+      addAssignEdge(Src, &Inst);
+    }
+
     void visitAtomicCmpXchgInst(AtomicCmpXchgInst &Inst) {
       auto *Ptr = Inst.getPointerOperand();
       auto *Val = Inst.getNewValOperand();
@@ -579,6 +584,11 @@
         break;
       }
 
+      case Instruction::FNeg: {
+        addAssignEdge(CE->getOperand(0), CE);
+        break;
+      }
+
       default:
         llvm_unreachable("Unknown instruction type encountered!");
       }


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