AMDGPU: Support commuting a FrameIndex operand
llvm-svn: 281369
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index cc33b1e..e2bbe3c 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -175,6 +175,16 @@
Contents.Sym = Sym;
}
+void MachineOperand::ChangeToFrameIndex(int Idx) {
+ assert((!isReg() || !isTied()) &&
+ "Cannot change a tied operand into a FrameIndex");
+
+ removeRegFromUses();
+
+ OpKind = MO_FrameIndex;
+ setIndex(Idx);
+}
+
/// ChangeToRegister - Replace this operand with a new register operand of
/// the specified value. If an operand is known to be an register already,
/// the setReg method should be used.