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LLVMCreateTargetMachineWithOpts: disable large data #4220

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Merged
merged 1 commit into from
Apr 27, 2025
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LLVMCreateTargetMachineWithOpts: disable large data #4220

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11 changes: 11 additions & 0 deletions core/iwasm/compilation/aot_llvm_extra2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -159,6 +159,17 @@ LLVMCreateTargetMachineWithOpts(LLVMTargetRef ctarget, const char *triple,
auto cm = convert(code_model, &jit);
auto targetmachine = target->createTargetMachine(triple, cpu, features,
opts, rm, cm, ol, jit);
#if LLVM_VERSION_MAJOR >= 18
// always place data in normal data section.
//
// note that:
// - our aot file emitter/loader doesn't support x86-64 large data
// sections. (eg .lrodata)
// - for our purposes, "data" is usually something the compiler
// generated. (eg. jump tables) we probably never benefit from
// large data sections.
targetmachine->setLargeDataThreshold(UINT64_MAX);
#endif
return reinterpret_cast<LLVMTargetMachineRef>(targetmachine);
}

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