[llvm-bugs] [Bug 51513] New: [X86][AMX] Pass modifies its input and doesn't report it: Lower AMX type for load/store

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=51513

            Bug ID: 51513
           Summary: [X86][AMX] Pass modifies its input and doesn't report
                    it: Lower AMX type for load/store
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: bing1.yu at intel.com, craig.topper at gmail.com,
                    llvm-bugs at lists.llvm.org, llvm-dev at redking.me.uk,
                    pengfei.wang at intel.com, spatel+llvm at rotateright.com

In an EXPENSIVE_CHECKS VS2019 release build I'm currently seeing this:

$ ":" "RUN: at line 2"
$ "e:\llvm\ninja\bin\opt.exe" "--codegen-opt-level=2" "-mtriple=x86_64"
"-lower-amx-type"
"E:\llvm\llvm-project\llvm\test\CodeGen\X86\AMX\lat-combine-amx-bitcast.ll"
"-S"
# command stderr:
Pass modifies its input and doesn't report it: Lower AMX type for load/store
Pass modifies its input and doesn't report it
UNREACHABLE executed at
E:\llvm\llvm-project\llvm\lib\IR\LegacyPassManager.cpp:1445!
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace.
Stack dump:
0.      Program arguments: e:\\llvm\\ninja\\bin\\opt.exe --codegen-opt-level=2
-mtriple=x86_64 -lower-amx-type
E:\\llvm\\llvm-project\\llvm\\test\\CodeGen\\X86\\AMX\\lat-combine-amx-bitcast.ll
-S
1.      Running pass 'Function Pass Manager' on module
'E:\llvm\llvm-project\llvm\test\CodeGen\X86\AMX\lat-combine-amx-bitcast.ll'.
2.      Running pass 'Lower AMX type for load/store' on function
'@combine_amx_cast_inside_bb'
 #0 0x00007ff6fb9b6cf5 HandleAbort
E:\llvm\llvm-project\llvm\lib\Support\Windows\Signals.inc:408:0

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
********************
Failed Tests (2):
  LLVM :: CodeGen/X86/AMX/lat-combine-amx-bitcast.ll
  LLVM :: CodeGen/X86/AMX/lat-transform-amx-bitcast.ll

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