[llvm-bugs] [Bug 37180] New: "S" arm64 assembly constraint unrecognized

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=37180

            Bug ID: 37180
           Summary: "S" arm64 assembly constraint unrecognized
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: ndesaulniers at google.com
                CC: jyknight at google.com, llvm-bugs at lists.llvm.org,
                    niravd at google.com

>From [0], it was reported that we crash when trying to compile the Linux kernel
for arm64.  From initial investigation, it seems that we fail to handle the "S"
inline assembly constraint.  From [1], it seems that:

S
An absolute symbolic address or a label reference

[0] https://github.com/ClangBuiltLinux/linux/issues/13
[1]
https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html#Machine-Constraints

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