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[DOC] Update SPIR-V Support on HIPAMD ToolChain (#211542)

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SPIR-V backend now is the default path.
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Dmitry Sidorov 2026-07-23 17:12:41 +02:00 committed by GitHub
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clang/docs/HIPSupport.md
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@ -1085,10 +1085,15 @@ diverges from the traditional compilation flow:
generates generic AMDGCN SPIR-V which retains architecture specific elements
without hardcoding them, thus allowing for optimal target specific code to be
generated at run time, when the concrete target is known.
- **LLVM IR Translation**: The program is compiled to LLVM Intermediate
Representation (IR), which is subsequently translated into SPIR-V. In the
future, this translation step will be replaced by direct SPIR-V emission via
the SPIR-V Back-end.
- **SPIR-V emission**: The program is compiled to LLVM Intermediate
Representation (IR), which is subsequently lowered into SPIR-V via the SPIR-V
backend.
:::{note}
The SPIR-V backend does not currently preserve debug information. Pass
`-no-use-spirv-backend` on the command line to fall back to the legacy
translation path, which retains debug information.
:::
- **Clang Offload Bundler**: The resulting SPIR-V is embedded in the Clang
offload bundler with the bundle ID `hip-spirv64-amd-amdhsa--amdgcnspirv`.