src/test/assembly/static-relocation-model.rs

   1 // min-llvm-version: 12.0.0
   2 // revisions: x64 A64 ppc64le
   3 // assembly-output: emit-asm
   4 // [x64] compile-flags: --target x86_64-unknown-linux-gnu -Crelocation-model=static
   5 // [x64] needs-llvm-components: x86
   6 // [A64] compile-flags: --target aarch64-unknown-linux-gnu -Crelocation-model=static
   7 // [A64] needs-llvm-components: aarch64
   8 // [ppc64le] compile-flags: --target powerpc64le-unknown-linux-gnu -Crelocation-model=static
   9 // [ppc64le] needs-llvm-components: powerpc
  10
  11 #![feature(no_core, lang_items)]
  12 #![no_core]
  13 #![crate_type="rlib"]
  14
  15 #[lang="sized"]
  16 trait Sized {}
  17
  18 #[lang="copy"]
  19 trait Copy {}
  20
  21 #[lang="sync"]
  22 trait Sync {}
  23
  24 #[lang = "drop_in_place"]
  25 fn drop_in_place<T>(_: *mut T) {}
  26
  27 impl Copy for u8 {}
  28 impl Sync for u8 {}
  29
  30 #[no_mangle]
  31 pub static PIERIS: u8 = 42;
  32
  33 extern "C" {
  34     static EXOCHORDA: *mut u8;
  35
  36     fn chaenomeles();
  37 }
  38
  39 // CHECK-LABEL: banana:
  40 // x64: movb   chaenomeles{{(\(%[a-z0-9]+\))?}}, %{{[a-z0-9]+}}
  41 // A64:      adrp    [[REG:[a-z0-9]+]], chaenomeles
  42 // A64-NEXT: ldrb    {{[a-z0-9]+}}, {{\[}}[[REG]], :lo12:chaenomeles]
  43 #[no_mangle]
  44 pub fn banana() -> u8 {
  45     unsafe {
  46         *(chaenomeles as *mut u8)
  47     }
  48 }
  49
  50 // CHECK-LABEL: peach:
  51 // x64: movb    banana{{(\(%[a-z0-9]+\))?}}, %{{[a-z0-9]+}}
  52 // A64:      adrp    [[REG2:[a-z0-9]+]], banana
  53 // A64-NEXT: ldrb    {{[a-z0-9]+}}, {{\[}}[[REG2]], :lo12:banana]
  54 #[no_mangle]
  55 pub fn peach() -> u8 {
  56     unsafe {
  57         *(banana as *mut u8)
  58     }
  59 }
  60
  61 // CHECK-LABEL: mango:
  62 // x64:      movq    EXOCHORDA{{(\(%[a-z0-9]+\))?}}, %[[REG:[a-z0-9]+]]
  63 // x64-NEXT: movb    (%[[REG]]), %{{[a-z0-9]+}}
  64 // A64:      adrp    [[REG2:[a-z0-9]+]], EXOCHORDA
  65 // A64-NEXT: ldr     {{[a-z0-9]+}}, {{\[}}[[REG2]], :lo12:EXOCHORDA]
  66 #[no_mangle]
  67 pub fn mango() -> u8 {
  68     unsafe {
  69         *EXOCHORDA
  70     }
  71 }
  72
  73 // CHECK-LABEL: orange:
  74 // x64: mov{{l|absq}}    $PIERIS, %{{[a-z0-9]+}}
  75 // A64:      adrp    [[REG2:[a-z0-9]+]], PIERIS
  76 // A64-NEXT: add     {{[a-z0-9]+}}, [[REG2]], :lo12:PIERIS
  77 #[no_mangle]
  78 pub fn orange() -> &'static u8 {
  79     &PIERIS
  80 }
  81
  82 // For ppc64 we need to make sure to generate TOC entries even with the static relocation model
  83 // ppc64le: .tc chaenomeles[TC],chaenomeles
  84 // ppc64le: .tc banana[TC],banana
  85 // ppc64le: .tc EXOCHORDA[TC],EXOCHORDA
  86 // ppc64le: .tc PIERIS[TC],PIERIS