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Translate WASM bitselect to CLIF

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This commit is contained in:
Andrew Brown
2019-10-11 15:16:46 -07:00
parent b927c55511
commit 135f9eb4a6
1 changed files with 9 additions and 1 deletions
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10
cranelift/wasm/src/code_translator.rs
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@@ -1138,6 +1138,15 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
let b_mod_bitwidth = builder.ins().band_imm(b, bitwidth - 1); let b_mod_bitwidth = builder.ins().band_imm(b, bitwidth - 1);
state.push1(builder.ins().sshr(bitcast_a, b_mod_bitwidth)) state.push1(builder.ins().sshr(bitcast_a, b_mod_bitwidth))
} }
Operator::V128Bitselect => {
let (a, b, c) = state.pop3();
let bitcast_a = optionally_bitcast_vector(a, I8X16, builder);
let bitcast_b = optionally_bitcast_vector(b, I8X16, builder);
let bitcast_c = optionally_bitcast_vector(c, I8X16, builder);
// The CLIF operand ordering is slightly different and the types of all three
// operands must match (hence the bitcast).
state.push1(builder.ins().bitselect(bitcast_c, bitcast_a, bitcast_b))
}
Operator::I8x16Eq Operator::I8x16Eq
| Operator::I8x16Ne | Operator::I8x16Ne
| Operator::I8x16LtS | Operator::I8x16LtS
@@ -1180,7 +1189,6 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
| Operator::F64x2Gt | Operator::F64x2Gt
| Operator::F64x2Le | Operator::F64x2Le
| Operator::F64x2Ge | Operator::F64x2Ge
| Operator::V128Bitselect
| Operator::I8x16AnyTrue | Operator::I8x16AnyTrue
| Operator::I8x16AllTrue | Operator::I8x16AllTrue
| Operator::I8x16Shl | Operator::I8x16Shl