mirror of
https://github.com/rust-lang/rust.git
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206 lines
4.4 KiB
Rust
206 lines
4.4 KiB
Rust
// revisions: x86_64 i686
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// assembly-output: emit-asm
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// compile-flags: -O
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//[x86_64] compile-flags: --target x86_64-unknown-linux-gnu
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//[x86_64] needs-llvm-components: x86
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//[i686] compile-flags: --target i686-unknown-linux-gnu
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//[i686] needs-llvm-components: x86
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// compile-flags: -C llvm-args=--x86-asm-syntax=intel
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// compile-flags: -C target-feature=+avx512bw
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#![feature(no_core, lang_items, rustc_attrs)]
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#![crate_type = "rlib"]
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#![no_core]
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#![allow(asm_sub_register)]
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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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impl Copy for i32 {}
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macro_rules! check {
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($func:ident $modifier:literal $reg:ident $mov:literal) => {
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// -O and extern "C" guarantee that the selected register is always ax/xmm0
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#[no_mangle]
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pub unsafe extern "C" fn $func() -> i32 {
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// Hack to avoid function merging
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extern "Rust" {
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fn dont_merge(s: &str);
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}
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dont_merge(stringify!($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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// x86_64: mov rax, rax
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// i686: mov eax, eax
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// CHECK: #NO_APP
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check!(reg "" reg "mov");
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// x86_64-LABEL: reg_l:
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// x86_64: #APP
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// x86_64: mov al, al
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// x86_64: #NO_APP
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#[cfg(x86_64)]
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check!(reg_l "l" reg "mov");
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// CHECK-LABEL: reg_x:
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// CHECK: #APP
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// CHECK: mov ax, ax
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// CHECK: #NO_APP
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check!(reg_x "x" reg "mov");
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// CHECK-LABEL: reg_e:
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// CHECK: #APP
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// CHECK: mov eax, eax
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// CHECK: #NO_APP
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check!(reg_e "e" reg "mov");
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// x86_64-LABEL: reg_r:
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// x86_64: #APP
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// x86_64: mov rax, rax
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// x86_64: #NO_APP
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#[cfg(x86_64)]
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check!(reg_r "r" reg "mov");
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// CHECK-LABEL: reg_abcd:
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// CHECK: #APP
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// x86_64: mov rax, rax
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// i686: mov eax, eax
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// CHECK: #NO_APP
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check!(reg_abcd "" reg_abcd "mov");
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// CHECK-LABEL: reg_abcd_l:
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// CHECK: #APP
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// CHECK: mov al, al
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// CHECK: #NO_APP
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check!(reg_abcd_l "l" reg_abcd "mov");
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// CHECK-LABEL: reg_abcd_h:
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// CHECK: #APP
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// CHECK: mov ah, ah
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// CHECK: #NO_APP
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check!(reg_abcd_h "h" reg_abcd "mov");
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// CHECK-LABEL: reg_abcd_x:
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// CHECK: #APP
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// CHECK: mov ax, ax
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// CHECK: #NO_APP
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check!(reg_abcd_x "x" reg_abcd "mov");
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// CHECK-LABEL: reg_abcd_e:
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// CHECK: #APP
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// CHECK: mov eax, eax
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// CHECK: #NO_APP
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check!(reg_abcd_e "e" reg_abcd "mov");
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// x86_64-LABEL: reg_abcd_r:
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// x86_64: #APP
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// x86_64: mov rax, rax
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// x86_64: #NO_APP
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#[cfg(x86_64)]
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check!(reg_abcd_r "r" reg_abcd "mov");
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// CHECK-LABEL: xmm_reg
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// CHECK: #APP
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// CHECK: movaps xmm0, xmm0
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// CHECK: #NO_APP
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check!(xmm_reg "" xmm_reg "movaps");
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// CHECK-LABEL: xmm_reg_x
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// CHECK: #APP
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// CHECK: movaps xmm0, xmm0
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// CHECK: #NO_APP
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check!(xmm_reg_x "x" xmm_reg "movaps");
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// CHECK-LABEL: xmm_reg_y
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// CHECK: #APP
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// CHECK: vmovaps ymm0, ymm0
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// CHECK: #NO_APP
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check!(xmm_reg_y "y" xmm_reg "vmovaps");
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// CHECK-LABEL: xmm_reg_z
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// CHECK: #APP
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// CHECK: vmovaps zmm0, zmm0
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// CHECK: #NO_APP
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check!(xmm_reg_z "z" xmm_reg "vmovaps");
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// CHECK-LABEL: ymm_reg
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// CHECK: #APP
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// CHECK: movaps ymm0, ymm0
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// CHECK: #NO_APP
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check!(ymm_reg "" ymm_reg "vmovaps");
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// CHECK-LABEL: ymm_reg_x
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// CHECK: #APP
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// CHECK: movaps xmm0, xmm0
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// CHECK: #NO_APP
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check!(ymm_reg_x "x" ymm_reg "movaps");
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// CHECK-LABEL: ymm_reg_y
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// CHECK: #APP
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// CHECK: vmovaps ymm0, ymm0
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// CHECK: #NO_APP
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check!(ymm_reg_y "y" ymm_reg "vmovaps");
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// CHECK-LABEL: ymm_reg_z
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// CHECK: #APP
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// CHECK: vmovaps zmm0, zmm0
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// CHECK: #NO_APP
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check!(ymm_reg_z "z" ymm_reg "vmovaps");
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// CHECK-LABEL: zmm_reg
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// CHECK: #APP
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// CHECK: movaps zmm0, zmm0
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// CHECK: #NO_APP
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check!(zmm_reg "" zmm_reg "vmovaps");
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// CHECK-LABEL: zmm_reg_x
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// CHECK: #APP
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// CHECK: movaps xmm0, xmm0
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// CHECK: #NO_APP
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check!(zmm_reg_x "x" zmm_reg "movaps");
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// CHECK-LABEL: zmm_reg_y
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// CHECK: #APP
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// CHECK: vmovaps ymm0, ymm0
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// CHECK: #NO_APP
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check!(zmm_reg_y "y" zmm_reg "vmovaps");
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// CHECK-LABEL: zmm_reg_z
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// CHECK: #APP
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// CHECK: vmovaps zmm0, zmm0
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// CHECK: #NO_APP
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check!(zmm_reg_z "z" zmm_reg "vmovaps");
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// Note: we don't have any way of ensuring that k1 is actually the register
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// chosen by the register allocator, so this check may fail if a different
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// register is chosen.
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// CHECK-LABEL: kreg:
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// CHECK: #APP
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// CHECK: kmovb k1, k1
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// CHECK: #NO_APP
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check!(kreg "" kreg "kmovb");
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