[llvm-bugs] [Bug 41678] New: fatal error: error in backend: Cannot emit physreg copy instruction

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41678

            Bug ID: 41678
           Summary: fatal error: error in backend: Cannot emit physreg
                    copy instruction
           Product: clang
           Version: 7.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hgreving at google.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

Created attachment 21856
  --> https://bugs.llvm.org/attachment.cgi?id=21856&action=edit
Runscript.

I am running into the following bug when compiling DynamoRIO with clang-7.

fatal error: error in backend: Cannot emit physreg copy instruction
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 7.0.1-6 (tags/RELEASE_701/final)
Target: i386-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.llvm.org/ and include the crash backtrace, preprocessed source,
and associated run script.
clang: note: diagnostic msg: 
********************

clang-7 --version
clang version 7.0.1-6 (tags/RELEASE_701/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

cat /proc/version
Linux version 4.19.28-2rodete1-amd64 (glinux-team at google.com) (gcc version
8.0.1 20180218 (experimental) [trunk revision 257787] (Debian 8-20180218-1)) #1
SMP Debian 4.19.28-2rodete1 (2019-03-18 > 2018)

The runscript is attached.
The pre-processed source (big) is here:
https://drive.google.com/open?id=1xsEmVmsC020e_fiSK4FqfaHPtUWccz5D

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