[TargetPassConfig] Add a target hook to know what GlobalISel should do on error.

By default, this hook tells GlobalISel to abort (report a fatal error)
when it encounters an error. The alternative will be to fall back on
SDISel.
This fall back will be removed when the bring-up of GlobalISel is over.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279879 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/TargetPassConfig.h b/include/llvm/CodeGen/TargetPassConfig.h
index a6110a63435..6f94ae455ee 100644
--- a/include/llvm/CodeGen/TargetPassConfig.h
+++ b/include/llvm/CodeGen/TargetPassConfig.h
@@ -281,6 +281,11 @@ public:
   /// verification is enabled.
   void addVerifyPass(const std::string &Banner);
 
+  /// Check whether or not GlobalISel should abort on error.
+  /// When this is disable, GlobalISel will fall back on SDISel instead of
+  /// erroring out.
+  virtual bool isGlobalISelAbortEnabled() const;
+
 protected:
   // Helper to verify the analysis is really immutable.
   void setOpt(bool &Opt, bool Val);