[llvm-bugs] [Bug 47040] New: Assertion failed: isRegBase() && "Invalid base register access!"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47040

            Bug ID: 47040
           Summary: Assertion failed: isRegBase() && "Invalid base
                    register access!"
           Product: clang
           Version: 11.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: scott.waye at hubse.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Created attachment 23827
  --> https://bugs.llvm.org/attachment.cgi?id=23827&action=edit
Source LLVM produced by CoreRT compiler (I work occasionally on CoreRT)

Compiling the attached LLVM bitcode fails with the message in summary.

clang++ is version 11.0.0
Stack is

1.      Code generation
2.      Running pass 'Function Pass Manager' on module 'e:\b.bc'.
3.      Running pass 'WebAssembly Instruction Selection' on function
'@System_Net_NameResolution_Interop_Sys_IPAddress__Equals'
 #0 0x00007ff789c88146 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x10a8146)
 #1 0x00007ffe6ef81861 (C:\WINDOWS\System32\ucrtbase.dll+0x71861)
 #2 0x00007ffe6ef82831 (C:\WINDOWS\System32\ucrtbase.dll+0x72831)
 #3 0x00007ffe6ef8424e (C:\WINDOWS\System32\ucrtbase.dll+0x7424e)
 #4 0x00007ffe6ef84145 (C:\WINDOWS\System32\ucrtbase.dll+0x74145)
 #5 0x00007ffe6ef844d1 (C:\WINDOWS\System32\ucrtbase.dll+0x744d1)
 #6 0x00007ff789014300 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x434300)
 #7 0x00007ff789014219 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x434219)
 #8 0x00007ff789013872 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x433872)
 #9 0x00007ff789013872 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x433872)
#10 0x00007ff78900a597 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x42a597)
#11 0x00007ff78aa62bcf (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1e82bcf)
#12 0x00007ff78a8c4366 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1ce4366)
#13 0x00007ff78a8c09df (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1ce09df)
#14 0x00007ff788fed8e0 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x40d8e0)
#15 0x00007ff7892bbbce (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x6dbbce)
#16 0x00007ff7895ef8b4 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0xa0f8b4)
#17 0x00007ff7895efc03 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0xa0fc03)
#18 0x00007ff7895f02ed (E:\GitHub\emsdk\upstream\bin\clang++.exe+0xa102ed)
#19 0x00007ff789f65920 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1385920)
#20 0x00007ff78c6cffdd (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x3aeffdd)
#21 0x00007ff78a53d215 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x195d215)
#22 0x00007ff78a4f9f2c (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1919f2c)
#23 0x00007ff78a5b1c0d (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x19d1c0d)
#24 0x00007ff788be75fa (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x75fa)
#25 0x00007ff788be4914 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x4914)
#26 0x00007ff78a48e396 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x18ae396)
#27 0x00007ff789c71543 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x1091543)
#28 0x00007ff78a48dbd3 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x18adbd3)
#29 0x00007ff78a38f8a5 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x17af8a5)
#30 0x00007ff78a38fc4b (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x17afc4b)
#31 0x00007ff78a37c2a7 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x179c2a7)
#32 0x00007ff788be42cf (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x42cf)
#33 0x00007ff78c6f9650 (E:\GitHub\emsdk\upstream\bin\clang++.exe+0x3b19650)
#34 0x00007ffe6ff96fd4 (C:\WINDOWS\System32\KERNEL32.DLL+0x16fd4)
#35 0x00007ffe7101cec1 (C:\WINDOWS\SYSTEM32\ntdll.dll+0x4cec1)
clang++: error: clang frontend command failed due to signal (use -v to see
invocation)


Commands to produce the error are (assuming input file in e:\b.ll)

emcc e:\b.bc -c -o e:\b.o 

E:/GitHub/emsdk/upstream/bin\clang++.exe -target wasm32-unknown-emscripten
-D__EMSCRIPTEN_major__=1 -D__EMSCRIPTEN_minor__=39 -D__EMSCRIPTEN_tiny__=19
-D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__
-Werror=implicit-function-declaration -Xclang -nostdsysteminc -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\include\libcxx -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\lib\libcxxabi\include
-Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\lib\libunwind\include
-Xclang -isystemE:\GitHub\emsdk\upstream\emscripten\system\include\compat
-Xclang -isystemE:\GitHub\emsdk\upstream\emscripten\system\include -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\include\libc -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\lib\libc\musl\arch\emscripten
-Xclang -isystemE:\GitHub\emsdk\upstream\emscripten\system\local\include
-Xclang -isystemE:\GitHub\emsdk\upstream\emscripten\system\include\SSE -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\cache\wasm\include -DEMSCRIPTEN
-fignore-exceptions -c e:\b.bc -Xclang
-isystemE:\GitHub\emsdk\upstream\emscripten\system\include\SDL -c -o e:\b.o
-mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj
-mllvm -disable-lsr

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