[LLC][MIPS] Fix crash after enabling LLVM_ENABLE_EXPENSIVE_CHECKS

Reviewers: sdardis, vkalintiris

Subscribers: jaydeep, slthakur, RKSimon, llvm-commits
Differential Revision: https://reviews.llvm.org/D27841

llvm-svn: 290949

2 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
index 6f0fdddd7d5..92d3c001df9 100644
--- a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
+++ b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
@@ -28,6 +28,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/Type.h"
+#include "llvm/IR/Dominators.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -43,6 +44,11 @@ bool MipsSEDAGToDAGISel::runOnMachineFunction(MachineFunction &MF) {
   return MipsDAGToDAGISel::runOnMachineFunction(MF);
 }
 
+void MipsSEDAGToDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.addRequired<DominatorTreeWrapperPass>();
+  SelectionDAGISel::getAnalysisUsage(AU);
+}
+
 void MipsSEDAGToDAGISel::addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
                                                MachineFunction &MF) {
   MachineInstrBuilder MIB(MF, &MI);
diff --git a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.h b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.h
index 2a8e5877e84..f89a350cab0 100644
--- a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.h
+++ b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.h
@@ -28,6 +28,8 @@ private:
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+
   void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
                              MachineFunction &MF);