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fix(hw-oracle): select the AMDGPU ELF emulation when linking kernels 

LLD built for a MinGW host runs the COFF linker when ld.lld gets no -m option,
so it rejects the AMDGPU object with "unknown file type" and the
hardware_oracle test fails on Windows with WinLibs LLVM in PATH. Passing
-m elf64_amdgpu selects the ELF linker on every host.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
ed 2026-10-09 17:09:53 -07:00
parent 787239eca5
commit a83bfa6813
1 changed files with 1 additions and 1 deletions
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2
tools/hw-oracle/hw_oracle.py
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@ -72,7 +72,7 @@ def assemble(body, work, wave64, *, ieee, denorm32, denorm16, dx10_clamp, round3
text = text.replace(key, value)
(work / "k.s").write_text(text)
subprocess.run([tool("clang"), "-x", "assembler", "-target", "amdgcn-amd-amdhsa", f"-mcpu={target()}", *(["-mwavefrontsize64"] if wave64 else []), "-c", str(work / "k.s"), "-o", str(work / "k.o")], check=True)
subprocess.run([tool("ld.lld"), "-shared", str(work / "k.o"), "-o", str(work / "k.co")], check=True)
subprocess.run([tool("ld.lld"), "-m", "elf64_amdgpu", "-shared", str(work / "k.o"), "-o", str(work / "k.co")], check=True)
return work / "k.co"