Add flags to indicate that there are "never" side effects or that there "may be"
side effects for machine instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45022 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp
index 47bbecb..a2fe370 100644
--- a/utils/TableGen/CodeGenTarget.cpp
+++ b/utils/TableGen/CodeGenTarget.cpp
@@ -395,9 +395,15 @@
usesCustomDAGSchedInserter = R->getValueAsBit("usesCustomDAGSchedInserter");
hasCtrlDep = R->getValueAsBit("hasCtrlDep");
isNotDuplicable = R->getValueAsBit("isNotDuplicable");
+ mayHaveSideEffects = R->getValueAsBit("mayHaveSideEffects");
+ neverHasSideEffects = R->getValueAsBit("neverHasSideEffects");
hasOptionalDef = false;
hasVariableNumberOfOperands = false;
-
+
+ if (mayHaveSideEffects && neverHasSideEffects)
+ throw R->getName() +
+ ": cannot have both 'mayHaveSideEffects' and 'neverHasSideEffects' set!";
+
DagInit *DI;
try {
DI = R->getValueAsDag("OutOperandList");