Verify that MachineMemOperand alignment is a non-zero power of 2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53262 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index da8101f6a08bb011aa0f0e3eadd2b9d705e4dc9d..38176b0c13202b05bc799a04c9eff483bf64cae1 100644 (file)
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -246,6 +246,7 @@ MachineMemOperand::MachineMemOperand(const Value *v, unsigned int f,
                                      int64_t o, uint64_t s, unsigned int a)
   : Offset(o), Size(s), V(v),
     Flags((f & 7) | ((Log2_32(a) + 1) << 3)) {
+  assert(isPowerOf2_32(a) && "Alignment is not a power of 2!");
 }
 
 //===----------------------------------------------------------------------===//