[PATCH] D123264: [RISCV] Pre-RA expand pseudos pass

Mon Aug 1 13:00:05 PDT 2022

leonardchan added a comment.

In D123264#3691824 <https://reviews.llvm.org/D123264#3691824>, @craig.topper wrote:

> In D123264#3691798 <https://reviews.llvm.org/D123264#3691798>, @leonardchan wrote:
>
>> Hi I think this patch led to the following ICEs seen on our windows builders (https://luci-milo.appspot.com/ui/p/fuchsia/builders/toolchain.ci/clang-windows-x64/b8807088318544910865/overview):
>>
>>   96/151] Building C object CMakeFiles/clang_rt.builtins-riscv64.dir/floatdidf.c.obj
>>   FAILED: CMakeFiles/clang_rt.builtins-riscv64.dir/floatdidf.c.obj 
>>   C:\b\s\w\ir\x\w\staging\llvm_build\.\bin\clang.exe -DVISIBILITY_HIDDEN  --target=riscv64-unknown-fuchsia -IC:/b/s/w/ir/x/w/cipd/sdk/pkg/sync/include -IC:/b/s/w/ir/x/w/cipd/sdk/pkg/fdio/include   -DCOMPILER_RT_HAS_FLOAT16 -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -o CMakeFiles/clang_rt.builtins-riscv64.dir/floatdidf.c.obj   -c C:/b/s/w/ir/x/w/llvm-llvm-project/compiler-rt/lib/builtins/floatdidf.c
>>   Unhandled encodeInstruction length!
>>   UNREACHABLE executed at C:\b\s\w\ir\x\w\llvm-llvm-project\llvm\lib\Target\RISCV\MCTargetDesc\RISCVMCCodeEmitter.cpp:209!
>>   PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
>>   Stack dump:
>>   0.	Program arguments: C:\\b\\s\\w\\ir\\x\\w\\staging\\llvm_build\\.\\bin\\clang.exe -DVISIBILITY_HIDDEN --target=riscv64-unknown-fuchsia -IC:/b/s/w/ir/x/w/cipd/sdk/pkg/sync/include -IC:/b/s/w/ir/x/w/cipd/sdk/pkg/fdio/include -DCOMPILER_RT_HAS_FLOAT16 -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -o CMakeFiles/clang_rt.builtins-riscv64.dir/floatdidf.c.obj -c C:/b/s/w/ir/x/w/llvm-llvm-project/compiler-rt/lib/builtins/floatdidf.c
>>   1.	<eof> parser at end of file
>>   2.	Code generation
>>   3.	Running pass 'Function Pass Manager' on module 'C:/b/s/w/ir/x/w/llvm-llvm-project/compiler-rt/lib/builtins/floatdidf.c'.
>>   4.	Running pass 'RISCV Assembly Printer' on function '@__floatdidf'
>>   Exception Code: 0xC000001D
>>    #0 0x00007ff6a2ebbcb6 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x6dbcb6)
>>    #1 0x00007ff6a6d19bcb (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x4539bcb)
>>    #2 0x00007ff6a6d0f0d0 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x452f0d0)
>>    #3 0x00007ff6a2e7e175 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x69e175)
>>    #4 0x00007ff6a374a155 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0xf6a155)
>>    #5 0x00007ff6a2c350aa (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x4550aa)
>>    #6 0x00007ff6a3b6669c (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x138669c)
>>    #7 0x00007ff6a29197c8 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x1397c8)
>>    #8 0x00007ff6a30cd61e (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x8ed61e)
>>    #9 0x00007ff6a2918d43 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x138d43)
>>   #10 0x00007ff6a31301ca (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x9501ca)
>>   #11 0x00007ff6a2b000f8 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x3200f8)
>>   #12 0x00007ff6a2b070cc (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x3270cc)
>>   #13 0x00007ff6a2b00829 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x320829)
>>   #14 0x00007ff6a3d77231 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x1597231)
>>   #15 0x00007ff6a4176f58 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x1996f58)
>>   #16 0x00007ff6a58a9e4e (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x30c9e4e)
>>   #17 0x00007ff6a40d5484 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x18f5484)
>>   #18 0x00007ff6a302fc23 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x84fc23)
>>   #19 0x00007ff6a30c4dc4 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x8e4dc4)
>>   #20 0x00007ff6a27e7abe (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x7abe)
>>   #21 0x00007ff6a27e4848 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x4848)
>>   #22 0x00007ff6a3e87636 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x16a7636)
>>   #23 0x00007ff6a2e7ca22 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x69ca22)
>>   #24 0x00007ff6a3e872cf (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x16a72cf)
>>   #25 0x00007ff6a2fed54a (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x80d54a)
>>   #26 0x00007ff6a2fed7af (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x80d7af)
>>   #27 0x00007ff6a3006cfb (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x826cfb)
>>   #28 0x00007ff6a27e418f (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x418f)
>>   #29 0x00007ff6a6cfadf0 (C:\b\s\w\ir\x\w\staging\llvm_build\bin\clang.exe+0x451adf0)
>>   #30 0x00007ff90b9f7974 (C:\Windows\System32\KERNEL32.DLL+0x17974)
>>   #31 0x00007ff90e73a2f1 (C:\Windows\SYSTEM32\ntdll.dll+0x5a2f1)
>>   clang: error: clang frontend command failed due to signal (use -v to see invocation)
>>   Fuchsia clang version 16.0.0 (https://llvm.googlesource.com/llvm-project 260a64106854986a981e49ed87ee740460a23eb5)
>>   Target: riscv64-unknown-fuchsia
>>   Thread model: posix
>>   InstalledDir: C:\b\s\w\ir\x\w\staging\llvm_build\.\bin
>>   clang: note: diagnostic msg: 
>>   ********************
>>   
>>   PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
>>   Preprocessed source(s) and associated run script(s) are located at:
>>   clang: note: diagnostic msg: C:\b\s\w\ir\x\t\floatdidf-9493d4.c
>>   clang: note: diagnostic msg: C:\b\s\w\ir\x\t\floatdidf-9493d4.sh
>>   
>>   clang: note: diagnostic msg: 
>>   
>>   
>>   
>>   ********************
>>
>> Would you be able to send out a fix or revert?
>
> Are you able to provide the preprocessed source file floatdidf-9493d4.c from the crash dump?

At the moment, no. I can try to reproduce it though that will take some time.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123264/new/

https://reviews.llvm.org/D123264