Have a way for a target to opt-out of target-independent fast isel

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176136 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/FastISel.h b/include/llvm/CodeGen/FastISel.h
index 705db7e643..57273d8b81 100644
--- a/include/llvm/CodeGen/FastISel.h
+++ b/include/llvm/CodeGen/FastISel.h
@@ -372,6 +372,11 @@ protected:
     return 0;
   }
 
+  /// Whether we should skip target-independent fast-isel
+  virtual bool SkipTargetIndependentFastISel() {
+    return false;
+  }
+
 private:
   bool SelectBinaryOp(const User *I, unsigned ISDOpcode);
 
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 04f5b32e04..ff9b2ba542 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -822,7 +822,7 @@ FastISel::SelectInstruction(const Instruction *I) {
   }
 
   // First, try doing target-independent selection.
-  if (SelectOperator(I, I->getOpcode())) {
+  if (!SkipTargetIndependentFastISel() && SelectOperator(I, I->getOpcode())) {
     ++NumFastIselSuccessIndependent;
     DL = DebugLoc();
     return true;