https://bugs.llvm.org/show_bug.cgi?id=47162
Bug ID: 47162
Summary: clang rGab9fc8bae805 crashes when building the Linux
kernel
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Created attachment 23850
--> https://bugs.llvm.org/attachment.cgi?id=23850&action=edit
tty_io-98ae38 crash reproducer
Starting with commit ab9fc8bae805c785066779e76e7846aabad5609e, clang crashes
when building the ToT x86 Linux kernel:
CC drivers/tty/tty_io.o
fatal error: error in backend: Cannot emit physreg copy instruction
clang-12: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 12.0.0 (https://github.com/llvm/llvm-project.git
ab9fc8bae805c785066779e76e7846aabad5609e)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/usr/local/google/home/samitolvanen/src/unified-llvm/build.ab9fc8bae805c785066779e76e7846aabad5609e/bin
clang-12: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-12: note: diagnostic msg: /tmp/tty_io-98ae38.c
clang-12: note: diagnostic msg: /tmp/tty_io-98ae38.sh
clang-12: note: diagnostic msg:
********************
The previous commit works. The preprocessed source and the run script are
attached.
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