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Legalize ireduce.iN.i2N to isplit.

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whitequark
2020-04-28 06:34:01 +00:00
committed by iximeow
parent a7d90af19d
commit 14bdaf3ce3
3 changed files with 31 additions and 0 deletions
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9
cranelift/codegen/meta/src/shared/legalize.rs
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@@ -61,6 +61,7 @@ pub(crate) fn define(insts: &InstructionGroup, imm: &Immediates) -> TransformGro
let cls = insts.by_name("cls");
let clz = insts.by_name("clz");
let ctz = insts.by_name("ctz");
let copy = insts.by_name("copy");
let fabs = insts.by_name("fabs");
let f32const = insts.by_name("f32const");
let f64const = insts.by_name("f64const");
@@ -629,6 +630,14 @@ pub(crate) fn define(insts: &InstructionGroup, imm: &Immediates) -> TransformGro
);
}
for &(ty_half, ty) in &[(I64, I128), (I32, I64)] {
let inst = ireduce.bind(ty_half).bind(ty);
expand.legalize(
def!(a = inst(x)),
vec![def!((b, c) = isplit(x)), def!(a = copy(b))],
);
}
// Expand integer operations with carry for RISC architectures that don't have
// the flags.
let intcc_ult = Literal::enumerator_for(&imm.intcc, "ult");