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Merge commit 'c19edfd71a1d0ddef86c2c67fdb40718d40a72b4' into sync_cg_clif-2022-07-25

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bjorn3
2022-07-25 16:07:57 +02:00
parent 2fdbf075cf c19edfd71a
commit 7a3ed235eb
24 changed files with 473 additions and 219 deletions
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13
compiler/rustc_codegen_cranelift/src/cast.rs
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@@ -149,17 +149,8 @@ pub(crate) fn clif_int_or_float_cast(
}
let is_not_nan = fx.bcx.ins().fcmp(FloatCC::Equal, from, from);
if to_ty == types::I128 {
// FIXME(bytecodealliance/wasmtime#3963): select.i128 on fcmp eq miscompiles
let (lsb, msb) = fx.bcx.ins().isplit(val);
let zero = fx.bcx.ins().iconst(types::I64, 0);
let lsb = fx.bcx.ins().select(is_not_nan, lsb, zero);
let msb = fx.bcx.ins().select(is_not_nan, msb, zero);
fx.bcx.ins().iconcat(lsb, msb)
} else {
let zero = fx.bcx.ins().iconst(to_ty, 0);
fx.bcx.ins().select(is_not_nan, val, zero)
}
let zero = fx.bcx.ins().iconst(to_ty, 0);
fx.bcx.ins().select(is_not_nan, val, zero)
} else if from_ty.is_float() && to_ty.is_float() {
// float -> float
match (from_ty, to_ty) {