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Add --bf16-emulation flag to C++ aiecc binary #2958

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Merged
erwei-xilinx merged 3 commits into from
Mar 13, 2026
Merged

Add --bf16-emulation flag to C++ aiecc binary #2958

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86dbbba
Add --bf16-emulation flag to C++ aiecc binary
erwei-xilinx Mar 12, 2026
793366d
Trigger CI re-run
erwei-xilinx Mar 12, 2026
7ec3adb
Merge branch 'main' into erwei/add-bf16-emulation-to-cpp-aiecc
erwei-xilinx Mar 12, 2026
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9 changes: 8 additions & 1 deletion tools/aiecc/aiecc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -386,6 +386,12 @@ static cl::opt<bool> noUnified(
cl::desc("Compile cores independently in separate processes (default)"),
cl::init(false), cl::cat(aieCompilerOptions));

static cl::opt<bool> bf16Emulation(
"bf16-emulation",
cl::desc("Emulate f32 vector arithmetic using bf16 operations in "
"convert-vector-to-aievec"),
cl::init(false), cl::cat(aieCompilerOptions));

// Backward compatibility flags (no-ops in C++ aiecc)
// These flags existed in Python aiecc.py but are not used in the core
// compilation flow. They are kept for backward compatibility so that
Expand Down Expand Up @@ -1345,7 +1351,8 @@ static LogicalResult runResourceAllocationPipeline(ModuleOp moduleOp,
lowerTarget == "aie2p") {
std::string vecPipeline =
"convert-vector-to-aievec{aie-target=" + lowerTarget +
" target-backend=llvmir}";
" target-backend=llvmir" +
(bf16Emulation ? " bf16-emulation=true" : "") + "}";
if (failed(parsePassPipeline(vecPipeline, pm))) {
llvm::errs() << "Error: Failed to parse convert-vector-to-aievec "
"pipeline\n";
Expand Down
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