Follow Eli's advice and store the VLA size with the native size_t type. Fixes PR3491.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63879 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 898c1bf..73d3e21 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -197,6 +197,9 @@
llvm::Value *VLASize = EmitVLASize(Ty);
+ // Downcast the VLA size expression
+ VLASize = Builder.CreateIntCast(VLASize, llvm::Type::Int32Ty, false, "tmp");
+
// Allocate memory for the array.
llvm::Value *VLA = Builder.CreateAlloca(llvm::Type::Int8Ty, VLASize, "vla");
DeclPtr = Builder.CreateBitCast(VLA, LElemPtrTy, "tmp");