[llvm-bugs] [Bug 41749] New: In function: __mulxc3 Cannot select: 0x55d58830cbf0: f80 = ConstantFP<APFloat(604462909807314587353088)>

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41749

            Bug ID: 41749
           Summary: In function: __mulxc3 Cannot select: 0x55d58830cbf0:
                    f80 = ConstantFP<APFloat(604462909807314587353088)>
           Product: new-bugs
           Version: 8.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: c.runge at cssbook.de
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Created attachment 21896
  --> https://bugs.llvm.org/attachment.cgi?id=21896&action=edit
bugpoint result

Clang 7 as well as Clang 8 ran into errors while compiling the respective
compiler-rt.

Tracing the bug led me to a crashing llc:


    > llc -asm-show-inst -asm-verbose bugpoint-reduced-simplified.bc
    LLVM ERROR: Cannot select: 0x55d58830cbf0: f80 =
ConstantFP<APFloat(604462909807314587353088)>
    In function: __mulxc3

The .bc file is attached.

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