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

Mon Aug 1 12:56:49 PDT 2022

craig.topper added a comment.

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?

Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D123264