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wasm: use simd_as for float to integer conversions #1724

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Feb 24, 2025
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wasm: use simd_as for float to integer conversions #1724

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21 changes: 6 additions & 15 deletions crates/core_arch/src/wasm32/simd128.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -147,15 +147,6 @@ unsafe extern "C" {
fn llvm_f64x2_min(x: simd::f64x2, y: simd::f64x2) -> simd::f64x2;
#[link_name = "llvm.maximum.v2f64"]
fn llvm_f64x2_max(x: simd::f64x2, y: simd::f64x2) -> simd::f64x2;

#[link_name = "llvm.fptosi.sat.v4i32.v4f32"]
fn llvm_i32x4_trunc_sat_f32x4_s(x: simd::f32x4) -> simd::i32x4;
#[link_name = "llvm.fptoui.sat.v4i32.v4f32"]
fn llvm_i32x4_trunc_sat_f32x4_u(x: simd::f32x4) -> simd::i32x4;
#[link_name = "llvm.fptosi.sat.v2i32.v2f64"]
fn llvm_i32x2_trunc_sat_f64x2_s(x: simd::f64x2) -> simd::i32x2;
#[link_name = "llvm.fptoui.sat.v2i32.v2f64"]
fn llvm_i32x2_trunc_sat_f64x2_u(x: simd::f64x2) -> simd::i32x2;
}

#[repr(packed)]
Expand Down Expand Up @@ -4059,7 +4050,7 @@ pub fn f64x2_pmax(a: v128, b: v128) -> v128 {
#[doc(alias("i32x4.trunc_sat_f32x4_s"))]
#[stable(feature = "wasm_simd", since = "1.54.0")]
pub fn i32x4_trunc_sat_f32x4(a: v128) -> v128 {
unsafe { llvm_i32x4_trunc_sat_f32x4_s(a.as_f32x4()).v128() }
unsafe { simd_as::<simd::f32x4, simd::i32x4>(a.as_f32x4()).v128() }
}

/// Converts a 128-bit vector interpreted as four 32-bit floating point numbers
Expand All @@ -4073,7 +4064,7 @@ pub fn i32x4_trunc_sat_f32x4(a: v128) -> v128 {
#[doc(alias("i32x4.trunc_sat_f32x4_u"))]
#[stable(feature = "wasm_simd", since = "1.54.0")]
pub fn u32x4_trunc_sat_f32x4(a: v128) -> v128 {
unsafe { llvm_i32x4_trunc_sat_f32x4_u(a.as_f32x4()).v128() }
unsafe { simd_as::<simd::f32x4, simd::u32x4>(a.as_f32x4()).v128() }
}

/// Converts a 128-bit vector interpreted as four 32-bit signed integers into a
Expand Down Expand Up @@ -4114,7 +4105,7 @@ pub fn f32x4_convert_u32x4(a: v128) -> v128 {
pub fn i32x4_trunc_sat_f64x2_zero(a: v128) -> v128 {
let ret: simd::i32x4 = unsafe {
simd_shuffle!(
llvm_i32x2_trunc_sat_f64x2_s(a.as_f64x2()),
simd_as::<simd::f64x2, simd::i32x2>(a.as_f64x2()),
simd::i32x2::ZERO,
[0, 1, 2, 3],
)
Expand All @@ -4136,10 +4127,10 @@ pub fn i32x4_trunc_sat_f64x2_zero(a: v128) -> v128 {
#[doc(alias("i32x4.trunc_sat_f64x2_u_zero"))]
#[stable(feature = "wasm_simd", since = "1.54.0")]
pub fn u32x4_trunc_sat_f64x2_zero(a: v128) -> v128 {
let ret: simd::i32x4 = unsafe {
let ret: simd::u32x4 = unsafe {
simd_shuffle!(
llvm_i32x2_trunc_sat_f64x2_u(a.as_f64x2()),
simd::i32x2::ZERO,
simd_as::<simd::f64x2, simd::u32x2>(a.as_f64x2()),
simd::u32x2::ZERO,
[0, 1, 2, 3],
)
};
Expand Down
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