From 91ee4ea7b69b6dcc5625f66988bc5ab6a864ee4c Mon Sep 17 00:00:00 2001
From: Anton Mitrokhin <anton.mitrokhin@phystech.edu>
Date: Thu, 4 Dec 2014 17:13:07 +0300
Subject: [PATCH] add guards to prevent unfolded 'ConstantExpr' from sneaking
 into 'lConstantElementsToMask' - we handle only Ints and Doubles there

---
 opt.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/opt.cpp b/opt.cpp
index 62370bcc..5005ddc9 100644
--- a/opt.cpp
+++ b/opt.cpp
@@ -367,6 +367,8 @@ lGetMask(llvm::Value *factor, uint64_t *mask) {
                 llvm::dyn_cast<llvm::Constant>(cv->getOperand(i));
             if (c == NULL)
                 return false;
+            if (llvm::isa<llvm::ConstantExpr>(cv->getOperand(i)) )
+                return false; // We can not handle constant expressions here
             elements.push_back(c);
         }
         *mask = lConstElementsToMask(elements);