When rebuilding constant structs, make sure to honor the isPacked bit.

This fixes PR1491 and GlobalOpt/2007-06-04-PackedStruct.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37423 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 516ba4363ee590984cfb2560d0450d46be125dac..520af8750e18bfadf268f0df1f406199ff046bf2 100644 (file)
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -1625,7 +1625,7 @@ static Constant *EvaluateStoreInto(Constant *Init, Constant *Val,
     Elts[Idx] = EvaluateStoreInto(Elts[Idx], Val, Addr, OpNo+1);
     
     // Return the modified struct.
-    return ConstantStruct::get(Elts);
+    return ConstantStruct::get(&Elts[0], Elts.size(), STy->isPacked());
   } else {
     ConstantInt *CI = cast<ConstantInt>(Addr->getOperand(OpNo));
     const ArrayType *ATy = cast<ArrayType>(Init->getType());