[llvm-bugs] [Bug 47021] New: aarch64 -O0 globalisel assertion failure compiling inline asm with register arguments

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https://bugs.llvm.org/show_bug.cgi?id=47021

            Bug ID: 47021
           Summary: aarch64 -O0 globalisel assertion failure compiling
                    inline asm with register arguments
           Product: new-bugs
           Version: 11.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: sorear at fastmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Attempting to compile the seL4runtime library for aarch64 at -O0 with clang
11.0.0-rc1 results in an assertion failure.  See
https://reviews.llvm.org/D83384#2189132 for a minimized IR-level reproducer,
the resulting stack trace, and analysis of the regression.  This was already
fixed in trunk by https://reviews.llvm.org/D85122, but has not been applied to
the 11.x release branch yet.

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