Handle undef values in LLVMVectorValuesAllEqual()

2012-01-27 16:48:14 -08:00
parent 664dc3bdda
commit 0f01a5dcbe
1 changed files with 4 additions and 0 deletions
--- a/llvmutil.cpp
+++ b/llvmutil.cpp
@@ -669,6 +669,10 @@ LLVMVectorValuesAllEqual(llvm::Value *v, int vectorLength,
        return true;
    }

+    if (llvm::isa<llvm::UndefValue>(v))
+        // ?
+        return false;
+
    Assert(!llvm::isa<llvm::Constant>(v));

    if (llvm::isa<llvm::CallInst>(v) || llvm::isa<llvm::LoadInst>(v) ||