[cpunion]

Use upstream github.com/xgo-dev/llvm v0.10.4, which includes CopyFunctionProperties from xgo-dev/llvm#61. Remove the temporary fork replacement introduced by #3061 and refresh checksums.

Validation: LLVM binding tests, ABI/C ABI/SSA/intrinsic/allocator-attribute suites, go mod verify, and the LLGo compiler build pass with LLVM 22.

[fennoai]

Review Summary

Dependency-only change: bumps github.com/xgo-dev/llvm from v0.10.3 → v0.10.4 in go.mod/go.sum and removes the temporary replace github.com/xgo-dev/llvm => github.com/cpunion/llvm fork directive now that the CopyFunctionProperties fix (xgo-dev/llvm#61) ships in the upstream release.

No issues found. Code-quality, performance, security, and documentation-accuracy passes all came back clean.

Verified:

• No stale references to cpunion/llvm or v0.10.3 remain anywhere in the repo. (cpunion only appears as a sample owner string in unrelated CI policy tests under .github/scripts/.)
• go.sum carries both the h1: and /go.mod hashes for v0.10.4 with no orphaned entries; go mod verify passes.
• CopyFunctionProperties is still exercised (internal/abi/large.go:375, internal/cabi/cabi.go:459), so the bump backs a real requirement rather than being a dead update.
• Switching from the personal-account fork pseudo-version to the tagged xgo-dev/llvm v0.10.4 is a modest supply-chain improvement.
• The remaining golang.org/x/tools replace is a separate, pre-existing temporary directive and is correctly left untouched.

Non-blocking suggestion: the only thing not verifiable from the diff is that upstream v0.10.4 actually contains the fix — best confirmed by a green build/test run in CI.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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