zoc: Stepwise compilation and output #483
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JoelleJS
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| &linked_data_set, | ||
| )?; | ||
| let data = dataset.get_content(comgr, DataKind::Bc, 0)?; | ||
| let data = ptx::bitcode_to_ir(data); |
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This fails with Invalid attribute group entry (Producer: 'LLVM19.0.0git' Reader: 'LLVM 17.0.6'), which makes sense. LLVM that ZLUDA links to is (deliberately) 17.0.6, while comgr is whatever ships with HIP (18 or 19). Older LLVM can't read newer bitcode.
Not sure if there is a good solution to this. This should be handled by comgr itself and it does not look like comgr exposes this capability? There's a promising AMD_COMGR_ACTION_DISASSEMBLE_BYTES_TO_SOURCE, but it seems to be used only for input filtering, disassembly seems to be an equivalent of objdump, so ELF/COFF only.
Not sure if there's a good solution is here. On linux one could try to to sniff path to llvm-dis? Start with the comgr path via dlinfo and try to call llvm-dis relative to it (on my machine comgr is in /opt/rocm/lib and llvm-dis is in /opt/rocm/llvm/bin/
If there is no good solution feel free to just comment it out with appropriate note
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CompileSourceToExecutableintoCompileSourceWithDeviceLibsToBc,CodegenBcToRelocatableandLinkRelocatableToExecutablewhen ZOC is used and outputs the intermediate artifacts:CompileSourceWithDeviceLibsToBcoutputs<name>.with-device-libs.llCodegenBcToRelocatableoutputs<name>.relocatable.elf<name>.relocatable.asmLinkRelocatableToExecutableoutputs<name>.elf(unchanged)