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Implement get_thread_pointer in PreExecuter #310

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Merged
yuri91 merged 1 commit into from
Jul 3, 2025
Merged

Implement get_thread_pointer in PreExecuter #310

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9 changes: 9 additions & 0 deletions llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1184,6 +1184,15 @@ void Interpreter::visitIntrinsicInst(IntrinsicInst &I) {

if (ForPreExecute && strncmp(I.getCalledFunction()->getName().str().c_str(), "llvm.cheerp", strlen("llvm.cheerp")) == 0)
{
if (I.getCalledFunction()->getName() == "llvm.cheerp.get.thread.pointer")
{
// We return a value of zero. The code in musl will instead assign it the address of the __dummy_thread variable.
IntegerType* Ty = cast<IntegerType>(I.getType());
GenericValue Result;
Result.IntVal = APInt(Ty->getBitWidth(), 0);
SetValue(&I, Result, SF);
return;
}
errs() << "Tried to execute cheerp intrinsic: " << I.getCalledFunction()->getName() << "\n";
printCallTrace();
CleanAbort = true;
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