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[x64] Add i64x2.abs

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This instruction has a single instruction lowering in AVX512F/VL and a three instruction lowering in AVX but neither is currently supported in the x64 backend. To implement this, we instead subtract the vector from 0 and use a blending instruction to pick the lanes containing the absolute value.
This commit is contained in:
Andrew Brown
2021-03-02 09:54:19 -08:00
parent 3c57c1b2bc
commit 508f8fa5a9
6 changed files with 36 additions and 6 deletions
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3
cranelift/wasm/src/code_translator.rs
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@@ -1564,7 +1564,7 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
let a = pop1_with_bitcast(state, type_of(op), builder);
state.push1(builder.ins().ineg(a))
}
Operator::I8x16Abs | Operator::I16x8Abs | Operator::I32x4Abs => {
Operator::I8x16Abs | Operator::I16x8Abs | Operator::I32x4Abs | Operator::I64x2Abs => {
let a = pop1_with_bitcast(state, type_of(op), builder);
state.push1(builder.ins().iabs(a))
}
@@ -1852,7 +1852,6 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
| Operator::I64x2ExtMulHighI32x4S
| Operator::I64x2ExtMulLowI32x4U
| Operator::I64x2ExtMulHighI32x4U
| Operator::I64x2Abs
| Operator::I64x2AllTrue
| Operator::I16x8ExtAddPairwiseI8x16S
| Operator::I16x8ExtAddPairwiseI8x16U