mirror of
https://github.com/rust-lang/rust.git
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145 lines
3.2 KiB
Rust
145 lines
3.2 KiB
Rust
//@ assembly-output: emit-asm
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//@ compile-flags: -O
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//@ compile-flags: --target armv7-unknown-linux-gnueabihf
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//@ compile-flags: -C target-feature=+neon
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//@ needs-llvm-components: arm
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#![feature(no_core, lang_items, rustc_attrs, repr_simd)]
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#![crate_type = "rlib"]
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#![no_core]
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#![allow(asm_sub_register, non_camel_case_types)]
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#[rustc_builtin_macro]
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macro_rules! asm {
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() => {};
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}
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#[rustc_builtin_macro]
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macro_rules! concat {
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() => {};
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}
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#[rustc_builtin_macro]
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macro_rules! stringify {
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() => {};
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}
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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#[repr(simd)]
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pub struct f32x4(f32, f32, f32, f32);
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impl Copy for i32 {}
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impl Copy for f32 {}
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impl Copy for f64 {}
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impl Copy for f32x4 {}
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macro_rules! check {
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($func:ident $modifier:literal $reg:ident $ty:ident $mov:literal) => {
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// -O and extern "C" guarantee that the selected register is always r0/s0/d0/q0
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#[no_mangle]
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pub unsafe extern "C" fn $func() -> $ty {
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// Hack to avoid function merging
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extern "Rust" {
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fn dont_merge(s: &str);
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}
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dont_merge(stringify!($func));
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let y;
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asm!(concat!($mov, " {0:", $modifier, "}, {0:", $modifier, "}"), out($reg) y);
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y
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}
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};
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}
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// CHECK-LABEL: reg:
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// CHECK: @APP
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// CHECK: mov r0, r0
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// CHECK: @NO_APP
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check!(reg "" reg i32 "mov");
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// CHECK-LABEL: sreg:
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// CHECK: @APP
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// CHECK: vmov.f32 s0, s0
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// CHECK: @NO_APP
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check!(sreg "" sreg f32 "vmov.f32");
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// CHECK-LABEL: sreg_low16:
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// CHECK: @APP
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// CHECK: vmov.f32 s0, s0
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// CHECK: @NO_APP
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check!(sreg_low16 "" sreg_low16 f32 "vmov.f32");
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// CHECK-LABEL: dreg:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(dreg "" dreg f64 "vmov.f64");
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// CHECK-LABEL: dreg_low16:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(dreg_low16 "" dreg_low16 f64 "vmov.f64");
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// CHECK-LABEL: dreg_low8:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(dreg_low8 "" dreg_low8 f64 "vmov.f64");
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// CHECK-LABEL: qreg:
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// CHECK: @APP
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// CHECK: vorr q0, q0, q0
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// CHECK: @NO_APP
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check!(qreg "" qreg f32x4 "vmov");
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// CHECK-LABEL: qreg_e:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(qreg_e "e" qreg f32x4 "vmov.f64");
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// CHECK-LABEL: qreg_f:
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// CHECK: @APP
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// CHECK: vmov.f64 d1, d1
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// CHECK: @NO_APP
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check!(qreg_f "f" qreg f32x4 "vmov.f64");
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// CHECK-LABEL: qreg_low8:
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// CHECK: @APP
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// CHECK: vorr q0, q0, q0
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// CHECK: @NO_APP
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check!(qreg_low8 "" qreg_low8 f32x4 "vmov");
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// CHECK-LABEL: qreg_low8_e:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(qreg_low8_e "e" qreg_low8 f32x4 "vmov.f64");
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// CHECK-LABEL: qreg_low8_f:
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// CHECK: @APP
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// CHECK: vmov.f64 d1, d1
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// CHECK: @NO_APP
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check!(qreg_low8_f "f" qreg_low8 f32x4 "vmov.f64");
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// CHECK-LABEL: qreg_low4:
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// CHECK: @APP
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// CHECK: vorr q0, q0, q0
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// CHECK: @NO_APP
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check!(qreg_low4 "" qreg_low4 f32x4 "vmov");
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// CHECK-LABEL: qreg_low4_e:
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// CHECK: @APP
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// CHECK: vmov.f64 d0, d0
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// CHECK: @NO_APP
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check!(qreg_low4_e "e" qreg_low4 f32x4 "vmov.f64");
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// CHECK-LABEL: qreg_low4_f:
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// CHECK: @APP
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// CHECK: vmov.f64 d1, d1
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// CHECK: @NO_APP
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check!(qreg_low4_f "f" qreg_low4 f32x4 "vmov.f64");
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