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[wasm] Bail R2R for all SIMD parameter sizes, not just SIMD16 #130391

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Merged
lewing merged 1 commit into from
Jul 9, 2026
Merged

[wasm] Bail R2R for all SIMD parameter sizes, not just SIMD16 #130391

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10 changes: 5 additions & 5 deletions src/coreclr/jit/codegenwasm.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -105,15 +105,15 @@ void CodeGen::genMarkLabelsForCodegen()
//
void CodeGen::genBeginFnProlog()
{
// SIMD16 (Vector128) parameters are lowered to i32 in the wasm signature, so any
// v128 operation performed on them produces an invalid module (e.g. a v128 op with
// an i32 operand). Bail such methods to the interpreter until SIMD16 parameters are
// SIMD (Vector2/3/4, Vector128) parameters are lowered to i32 in the wasm signature, so any
// vector operation performed on them produces an invalid module (e.g. a v128/f64 op with
// an i32 operand). Bail such methods to the interpreter until SIMD parameters are
// properly supported in the wasm calling convention.
for (unsigned lclNum = 0; lclNum < m_compiler->info.compArgsCount; lclNum++)
{
if (m_compiler->lvaGetDesc(lclNum)->TypeGet() == TYP_SIMD16)
if (varTypeIsSIMD(m_compiler->lvaGetDesc(lclNum)->TypeGet()))
{
NYI_WASM_SIMD("SIMD16 parameter");
NYI_WASM_SIMD("SIMD parameter");
}
}

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