[llvm-bugs] [Bug 35821] New: Invalid shift amount assertion in -aa-eval

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35821

            Bug ID: 35821
           Summary: Invalid shift amount assertion in -aa-eval
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Global Analyses
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: alina.sbirlea at gmail.com, llvm-bugs at lists.llvm.org,
                    nunoplopes at sapo.pt, spatel+llvm at rotateright.com,
                    yyc1992 at gmail.com

Reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4708

opt -aa-eval

define void @f() {
  %G26 = getelementptr i1, i1* undef, i1 undef
  %B20 = shl i8 -128, 16
  %G47 = getelementptr i1*, i1** undef, i8 %B20
  unreachable
}

Assertion failed: ShiftAmt <= BitWidth && "Invalid shift amount", file
D:\LLVM\llvm\include\llvm/ADT/APInt.h, line 894

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