[llvm-bugs] [Bug 43518] New: clang crashes when compiling boringSSL asm file with r373168

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43518

            Bug ID: 43518
           Summary: clang crashes when compiling boringSSL asm file with
                    r373168
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: i at maskray.me
          Reporter: manojgupta at google.com
                CC: htmldeveloper at gmail.com, i at maskray.me,
                    llozano at chromium.org, llvm-bugs at lists.llvm.org,
                    maskray at google.com, neeilans at live.com,
                    peter.smith at linaro.org, richard-llvm at metafoo.co.uk

https://cs.chromium.org/chromium/src/third_party/boringssl/linux-arm/crypto/fipsmodule/vpaes-armv7.S
can't be compiled (assembled) with clang post r373168 

repro:
$ clang -target armv7a-linux-gnueabihf -mthumb -c vpaes-armv7.S
clang -cc1as: fatal error: error in backend: Size expression must be absolute.

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