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Skip tailcall argument check for OCaml functions #15

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Merged
usuyus merged 4 commits into from
Aug 15, 2025
Merged

Skip tailcall argument check for OCaml functions #15

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6d9870b
Skip tailcall argument check for OCaml functions
usuyus Aug 8, 2025
300f470
Move the ocamlcc check to a more reasonable location
usuyus Aug 15, 2025
839b134
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usuyus Aug 15, 2025
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usuyus Aug 15, 2025
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6 changes: 4 additions & 2 deletions llvm/lib/IR/Verifier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3604,8 +3604,10 @@ void Verifier::verifyMustTailCall(CallInst &CI) {

// - The caller and callee prototypes must match. Pointer types of
// parameters or return types may differ in pointee type, but not
// address space.
if (!CI.getCalledFunction() || !CI.getCalledFunction()->isIntrinsic()) {
// address space. Note that this is not applicable for OCaml functions,
// since their arguments will not be passed from the stack.
if ((!CI.getCalledFunction() || !CI.getCalledFunction()->isIntrinsic()) &&
CI.getCallingConv() != CallingConv::OCaml) {
Check(CallerTy->getNumParams() == CalleeTy->getNumParams(),
"cannot guarantee tail call due to mismatched parameter counts", &CI);
for (unsigned I = 0, E = CallerTy->getNumParams(); I != E; ++I) {
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