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Translate the sign-extended and zero-extended versions of extract_lane

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This commit is contained in:
Andrew Brown
2019-08-21 15:21:18 -07:00
parent ebc783e49b
commit f1363168a9
1 changed files with 10 additions and 4 deletions
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14
cranelift/wasm/src/code_translator.rs
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@@ -940,6 +940,16 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
let splatted = builder.ins().splat(ty, value_to_splat);
state.push1(splatted)
}
Operator::I8x16ExtractLaneS { lane } | Operator::I16x8ExtractLaneS { lane } => {
let vector = optionally_bitcast_vector(state.pop1(), type_of(op), builder);
let extracted = builder.ins().extractlane(vector, lane.clone());
state.push1(builder.ins().sextend(I32, extracted))
}
Operator::I8x16ExtractLaneU { lane } | Operator::I16x8ExtractLaneU { lane } => {
let vector = optionally_bitcast_vector(state.pop1(), type_of(op), builder);
state.push1(builder.ins().extractlane(vector, lane.clone()));
// on x86, PEXTRB zeroes the upper bits of the destination register of extractlane so uextend is elided; of course, this depends on extractlane being legalized to a PEXTRB
}
Operator::I32x4ExtractLane { lane }
| Operator::I64x2ExtractLane { lane }
| Operator::F32x4ExtractLane { lane }
@@ -967,10 +977,6 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
}
Operator::V128Load { .. }
| Operator::V128Store { .. }
| Operator::I8x16ExtractLaneS { .. }
| Operator::I8x16ExtractLaneU { .. }
| Operator::I16x8ExtractLaneS { .. }
| Operator::I16x8ExtractLaneU { .. }
| Operator::V8x16Shuffle { .. }
| Operator::I8x16Eq
| Operator::I8x16Ne