[LLVMbugs] [Bug 2794] New: ISD:: SIGN_EXTEND_INREG added during Legalization and not Legalized

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2794

           Summary: ISD::SIGN_EXTEND_INREG added during Legalization and not
                    Legalized
           Product: new-bugs
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rich at pennware.com
                CC: llvmbugs at cs.uiuc.edu


LegalizeDAG.cpp adds a ISD::SIGN_EXTEND_INREG node during promotion but doesn't
make sure to verify that the resulting DAG is legal for the target.

The fix is:

Index: LegalizeDAG.cpp
===================================================================
--- LegalizeDAG.cpp     (revision 56194)
+++ LegalizeDAG.cpp     (working copy)
@@ -4670,6 +4670,8 @@
                            DAG.getValueType(VT));
         Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2,
                            DAG.getValueType(VT));
+        Tmp1 = LegalizeOp(Tmp1);
+        Tmp2 = LegalizeOp(Tmp2);
         break;
       }
     }


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