[LLVMbugs] [Bug 3151] New: SelectionDAGLowering::Clusterify fails on 128 bit constants

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3151

           Summary: SelectionDAGLowering::Clusterify fails on 128 bit
                    constants
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=2251)
 --> (http://llvm.org/bugs/attachment.cgi?id=2251)
testcase.ll

The x86-64 linux build of the Fortran front-end fails with:

APInt.h:1049: int64_t llvm::APInt::getSExtValue() const: Assertion
`getMinSignedBits() <= 64 && "Too many bits for int64_t"' failed.

This is because Clusterify is using getSExtValue, which doesn't
work for 128 bit values.

To reproduce: llc testcase.bc


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