Require non-NULL register masks.
It doesn't seem worthwhile to give meaning to a NULL register mask
pointer. It complicates all the code using register mask operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149646 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp
index 49a109e..9b058c3 100644
--- a/lib/CodeGen/MachineLICM.cpp
+++ b/lib/CodeGen/MachineLICM.cpp
@@ -417,10 +417,7 @@
// We can't hoist an instruction defining a physreg that is clobbered in
// the loop.
if (MO.isRegMask()) {
- if (const uint32_t *Mask = MO.getRegMask())
- PhysRegClobbers.setBitsNotInMask(Mask);
- else
- PhysRegClobbers.set();
+ PhysRegClobbers.setBitsNotInMask(MO.getRegMask());
continue;
}