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Implement wasm saturating conversions;

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This commit is contained in:
Benjamin Bouvier
2018-07-27 19:11:39 +02:00
committed by Dan Gohman
parent 9dbfbbde10
commit f7e481d9ac
5 changed files with 305 additions and 31 deletions
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26
lib/wasm/src/code_translator.rs
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@@ -631,17 +631,21 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
let val = state.pop1();
state.push1(builder.ins().fcvt_to_uint(I32, val));
}
Operator::I64TruncSSatF64
| Operator::I64TruncSSatF32
| Operator::I32TruncSSatF64
| Operator::I32TruncSSatF32
| Operator::I64TruncUSatF64
| Operator::I64TruncUSatF32
| Operator::I32TruncUSatF64
| Operator::I32TruncUSatF32 => {
return Err(WasmError::Unsupported(
"proposed saturating conversion operators",
));
Operator::I64TruncSSatF64 | Operator::I64TruncSSatF32 => {
let val = state.pop1();
state.push1(builder.ins().fcvt_to_sint_sat(I64, val));
}
Operator::I32TruncSSatF64 | Operator::I32TruncSSatF32 => {
let val = state.pop1();
state.push1(builder.ins().fcvt_to_sint_sat(I32, val));
}
Operator::I64TruncUSatF64 | Operator::I64TruncUSatF32 => {
let val = state.pop1();
state.push1(builder.ins().fcvt_to_uint_sat(I64, val));
}
Operator::I32TruncUSatF64 | Operator::I32TruncUSatF32 => {
let val = state.pop1();
state.push1(builder.ins().fcvt_to_uint_sat(I32, val));
}
Operator::F32ReinterpretI32 => {
let val = state.pop1();