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Disable SPIR-V extensions except ones needed by chipStar #4

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Dec 18, 2023
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Disable SPIR-V extensions except ones needed by chipStar #4

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14 changes: 12 additions & 2 deletions clang/lib/Driver/ToolChains/HIPSPV.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -99,8 +99,18 @@ void HIPSPV::Linker::constructLinkAndEmitSpirvCommand(
// We need 1.2 when using warp-level primitivies via sub group extensions.
// Strictly put we'd need 1.3 for the standard non-extension shuffle
// operations, but it's not supported by any target yet.
llvm::opt::ArgStringList TrArgs{"--spirv-max-version=1.2",
"--spirv-ext=+all"};
llvm::opt::ArgStringList TrArgs{
"--spirv-max-version=1.2",
"--spirv-ext=-all"

// TODO: Consider upstreaming -Xspirv-translator found in intel-llvm
// repository and make it work for SPIR-V toolchains so chipStar may
// control extensions it needs (if/when necessary).

// Needed for experimental indirect call support.
",+SPV_INTEL_function_pointers"
// Needed for shuffles below SPIR-V 1.3
",+SPV_INTEL_subgroups"};
InputInfo TrInput = InputInfo(types::TY_LLVM_BC, TempFile, "");
SPIRV::constructTranslateCommand(C, *this, JA, Output, TrInput, TrArgs);
}
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