60 lines
1.9 KiB
Rust
60 lines
1.9 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes
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//
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#![crate_type = "lib"]
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#![feature(repr_simd, intrinsics)]
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#![allow(non_camel_case_types)]
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#[repr(simd)]
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#[derive(Copy, Clone)]
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pub struct u32x2([u32; 2]);
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#[repr(simd)]
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#[derive(Copy, Clone)]
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pub struct i32x2([i32; 2]);
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#[repr(simd)]
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#[derive(Copy, Clone)]
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pub struct i8x16([i8; 16]);
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extern "rust-intrinsic" {
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fn simd_bitmask<T, U>(x: T) -> U;
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}
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// NOTE(eddyb) `%{{x|1}}` is used because on some targets (e.g. WASM)
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// SIMD vectors are passed directly, resulting in `%x` being a vector,
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// while on others they're passed indirectly, resulting in `%x` being
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// a pointer to a vector, and `%1` a vector loaded from that pointer.
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// This is controlled by the target spec option `simd_types_indirect`.
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// CHECK-LABEL: @bitmask_int
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#[no_mangle]
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pub unsafe fn bitmask_int(x: i32x2) -> u8 {
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// CHECK: [[A:%[0-9]+]] = lshr <2 x i32> %{{x|1}}, {{<i32 31, i32 31>|splat \(i32 31\)}}
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// CHECK: [[B:%[0-9]+]] = trunc <2 x i32> [[A]] to <2 x i1>
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// CHECK: [[C:%[0-9]+]] = bitcast <2 x i1> [[B]] to i2
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// CHECK: %{{[0-9]+}} = zext i2 [[C]] to i8
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simd_bitmask(x)
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}
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// CHECK-LABEL: @bitmask_uint
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#[no_mangle]
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pub unsafe fn bitmask_uint(x: u32x2) -> u8 {
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// CHECK: [[A:%[0-9]+]] = lshr <2 x i32> %{{x|1}}, {{<i32 31, i32 31>|splat \(i32 31\)}}
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// CHECK: [[B:%[0-9]+]] = trunc <2 x i32> [[A]] to <2 x i1>
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// CHECK: [[C:%[0-9]+]] = bitcast <2 x i1> [[B]] to i2
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// CHECK: %{{[0-9]+}} = zext i2 [[C]] to i8
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simd_bitmask(x)
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}
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// CHECK-LABEL: @bitmask_int16
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#[no_mangle]
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pub unsafe fn bitmask_int16(x: i8x16) -> u16 {
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// CHECK: [[A:%[0-9]+]] = lshr <16 x i8> %{{x|1|2}}, {{<i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7>|splat \(i8 7\)}}
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// CHECK: [[B:%[0-9]+]] = trunc <16 x i8> [[A]] to <16 x i1>
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// CHECK: %{{[0-9]+}} = bitcast <16 x i1> [[B]] to i16
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// CHECK-NOT: zext
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simd_bitmask(x)
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}
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