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Merge commit '979dcf8e2f213e4f4b645cb62e7fe9f4f2c0c785' into sync_cg_clif-2025-05-25

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This commit is contained in:
bjorn3
2025-05-25 18:51:16 +00:00
parent 283db70ace 979dcf8e2f
commit 3816385b09
36 changed files with 1111 additions and 266 deletions
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21
compiler/rustc_codegen_cranelift/src/cast.rs
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@@ -1,5 +1,6 @@
//! Various number casting functions
use crate::codegen_f16_f128;
use crate::prelude::*;
pub(crate) fn clif_intcast(
@@ -36,6 +37,14 @@ pub(crate) fn clif_int_or_float_cast(
) -> Value {
let from_ty = fx.bcx.func.dfg.value_type(from);
// FIXME(bytecodealliance/wasmtime#8312): Remove in favour of native
// Cranelift operations once Cranelift backends have lowerings for them.
if matches!(from_ty, types::F16 | types::F128)
|| matches!(to_ty, types::F16 | types::F128) && from_ty != to_ty
{
return codegen_f16_f128::codegen_cast(fx, from, from_signed, to_ty, to_signed);
}
if from_ty.is_int() && to_ty.is_int() {
// int-like -> int-like
clif_intcast(
@@ -58,8 +67,10 @@ pub(crate) fn clif_int_or_float_cast(
"__float{sign}ti{flt}f",
sign = if from_signed { "" } else { "un" },
flt = match to_ty {
types::F16 => "h",
types::F32 => "s",
types::F64 => "d",
types::F128 => "t",
_ => unreachable!("{:?}", to_ty),
},
);
@@ -90,8 +101,10 @@ pub(crate) fn clif_int_or_float_cast(
"__fix{sign}{flt}fti",
sign = if to_signed { "" } else { "uns" },
flt = match from_ty {
types::F16 => "h",
types::F32 => "s",
types::F64 => "d",
types::F128 => "t",
_ => unreachable!("{:?}", to_ty),
},
);
@@ -145,8 +158,12 @@ pub(crate) fn clif_int_or_float_cast(
} else if from_ty.is_float() && to_ty.is_float() {
// float -> float
match (from_ty, to_ty) {
(types::F32, types::F64) => fx.bcx.ins().fpromote(types::F64, from),
(types::F64, types::F32) => fx.bcx.ins().fdemote(types::F32, from),
(types::F16, types::F32 | types::F64 | types::F128)
| (types::F32, types::F64 | types::F128)
| (types::F64, types::F128) => fx.bcx.ins().fpromote(to_ty, from),
(types::F128, types::F64 | types::F32 | types::F16)
| (types::F64, types::F32 | types::F16)
| (types::F32, types::F16) => fx.bcx.ins().fdemote(to_ty, from),
_ => from,
}
} else {