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JuliaHubOSS / llvm-cbe

resurrected LLVM "C Backend", with improvements
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error: invalid field 'variables' #62

Closed Stamp1993 closed 3 years ago

Stamp1993 commented 4 years ago

llvm-cbe compiles, but both when building and testing llvm-cbe on Step 3: Usage Examples or when I try to use it for any of my generated IR I get the same error: error: invalid field 'variables' Is it some version incompatibility, wrong compilers, or my mistake? I think 'variables' fields should be supported somehow

NulAsh commented 4 years ago

I have exactly the same problem

$ ~/llvm-project/llvm/build/bin/llvm-cbe main.ll
/home/sha/llvm-project/llvm/build/bin/llvm-cbe: main.ll:192:163: error: invalid field 'variables'
!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, variables: !2)
                                                                                                                                                                  ^
Muqi-Zou commented 3 years ago

Same using clang-9, llvm-10, ubuntu 18.04:

~/decompile_tool/llvm-cbe/build/tools/llvm-cbe/llvm-cbe main.ll 
/home/muqi/decompile_tool/llvm-cbe/build/tools/llvm-cbe/llvm-cbe: main.ll:192:163: error: invalid field 'variables'
!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, variables: !2)
hikari-no-yume commented 3 years ago

@Muqi-Zou, since you said “clang-9, llvm-10” am pretty sure the problem is you're producing LLVM IR with one version of LLVM (Clang 9 is LLVM 9) but consuming it with a different one (LLVM 10). There is not full compatibility of LLVM IR between versions, it is an unstable format.

Perhaps that is also @Stamp1993 and @NulAsh's problem? You really need to use the same LLVM version for Clang and for LLVM-CBE.

hikari-no-yume commented 3 years ago

I don't know about Ubuntu 18.04, but on Ubuntu 20.04 I could do sudo apt install llvm-10-dev clang-10 and thus get matching LLVM 10 versions of the LLVM framework and Clang.

If there's not LLVM 10 available on 18.04, maybe there's LLVM 9 or something?

Muqi-Zou commented 3 years ago

@Muqi-Zou, since you said “clang-9, llvm-10” am pretty sure the problem is you're producing LLVM IR with one version of LLVM (Clang 9 is LLVM 9) but consuming it with a different one (LLVM 10). There is not full compatibility of LLVM IR between versions, it is an unstable format.

Perhaps that is also @Stamp1993 and @NulAsh's problem? You really need to use the same LLVM version for Clang and for LLVM-CBE.

Clang 10.0 + llvm 10.0 + ubuntu 18.04 works! Thanks a lot.