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Add global_asm tests
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‎src/doc/unstable-book/src/global_asm.md

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@@ -27,7 +27,7 @@ A simple usage looks like this:
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```rust,ignore
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# #![feature(global_asm)]
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# you also need relevant target_arch cfgs
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global_asm!(include_str("something_neato.s"));
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global_asm!(include_str!("something_neato.s"));
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```
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And a more complicated usage looks like this:

‎src/librustc_driver/test.rs

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@@ -233,6 +233,7 @@ impl<'a, 'gcx, 'tcx> Env<'a, 'gcx, 'tcx> {
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hir::ItemStatic(..) |
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hir::ItemFn(..) |
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hir::ItemForeignMod(..) |
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hir::ItemGlobalAsm(..) |
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hir::ItemTy(..) => None,
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hir::ItemEnum(..) |

‎src/libsyntax/feature_gate.rs

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@@ -986,7 +986,7 @@ pub const EXPLAIN_ASM: &'static str =
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"inline assembly is not stable enough for use and is subject to change";
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pub const EXPLAIN_GLOBAL_ASM: &'static str =
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"module-level inline assembly is experimental and subject to change";
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"`global_asm!` is not stable enough for use and is subject to change";
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pub const EXPLAIN_LOG_SYNTAX: &'static str =
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"`log_syntax!` is not stable enough for use and is subject to change";

‎src/test/codegen/foo.s

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.global foo
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foo:
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jmp baz

‎src/test/codegen/global_asm.rs

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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-aarch64
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// ignore-aarch64_be
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// ignore-arm
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// ignore-armeb
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// ignore-avr
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// ignore-bpfel
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// ignore-bpfeb
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// ignore-hexagon
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// ignore-mips
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// ignore-mipsel
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// ignore-mips64
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// ignore-mips64el
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// ignore-msp430
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// ignore-powerpc64
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// ignore-powerpc64le
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// ignore-powerpc
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// ignore-r600
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// ignore-amdgcn
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// ignore-sparc
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// ignore-sparcv9
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// ignore-sparcel
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// ignore-s390x
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// ignore-tce
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// ignore-thumb
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// ignore-thumbeb
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// ignore-xcore
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// ignore-nvptx
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// ignore-nvptx64
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// ignore-le32
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// ignore-le64
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// ignore-amdil
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// ignore-amdil64
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// ignore-hsail
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// ignore-hsail64
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// ignore-spir
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// ignore-spir64
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// ignore-kalimba
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// ignore-shave
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// ignore-wasm32
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// ignore-wasm64
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// ignore-emscripten
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// compile-flags: -C no-prepopulate-passes
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#![feature(global_asm)]
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#![crate_type = "lib"]
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// CHECK-LABEL: foo
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// CHECK: module asm
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// this regex will capture the correct unconditional branch inst.
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// CHECK: module asm "{{[[:space:]]+}}jmp baz"
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global_asm!(r#"
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.global foo
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foo:
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jmp baz
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"#);
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extern "C" {
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fn foo();
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}
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// CHECK-LABEL: @baz
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#[no_mangle]
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pub unsafe extern "C" fn baz() {}

‎src/test/codegen/global_asm_include.rs

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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-aarch64
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// ignore-aarch64_be
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// ignore-arm
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// ignore-armeb
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// ignore-avr
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// ignore-bpfel
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// ignore-bpfeb
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// ignore-hexagon
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// ignore-mips
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// ignore-mipsel
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// ignore-mips64
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// ignore-mips64el
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// ignore-msp430
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// ignore-powerpc64
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// ignore-powerpc64le
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// ignore-powerpc
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// ignore-r600
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// ignore-amdgcn
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// ignore-sparc
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// ignore-sparcv9
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// ignore-sparcel
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// ignore-s390x
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// ignore-tce
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// ignore-thumb
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// ignore-thumbeb
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// ignore-xcore
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// ignore-nvptx
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// ignore-nvptx64
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// ignore-le32
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// ignore-le64
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// ignore-amdil
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// ignore-amdil64
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// ignore-hsail
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// ignore-hsail64
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// ignore-spir
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// ignore-spir64
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// ignore-kalimba
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// ignore-shave
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// ignore-wasm32
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// ignore-wasm64
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// ignore-emscripten
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// compile-flags: -C no-prepopulate-passes
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#![feature(global_asm)]
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#![crate_type = "lib"]
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// CHECK-LABEL: foo
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// CHECK: module asm
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// CHECK: module asm "{{[[:space:]]+}}jmp baz"
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global_asm!(include_str!("foo.s"));
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extern "C" {
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fn foo();
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}
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// CHECK-LABEL: @baz
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#[no_mangle]
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pub unsafe extern "C" fn baz() {}

‎src/test/codegen/global_asm_x2.rs

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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-aarch64
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// ignore-aarch64_be
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// ignore-arm
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// ignore-armeb
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// ignore-avr
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// ignore-bpfel
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// ignore-bpfeb
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// ignore-hexagon
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// ignore-mips
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// ignore-mipsel
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// ignore-mips64
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// ignore-mips64el
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// ignore-msp430
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// ignore-powerpc64
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// ignore-powerpc64le
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// ignore-powerpc
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// ignore-r600
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// ignore-amdgcn
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// ignore-sparc
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// ignore-sparcv9
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// ignore-sparcel
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// ignore-s390x
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// ignore-tce
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// ignore-thumb
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// ignore-thumbeb
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// ignore-xcore
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// ignore-nvptx
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// ignore-nvptx64
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// ignore-le32
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// ignore-le64
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// ignore-amdil
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// ignore-amdil64
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// ignore-hsail
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// ignore-hsail64
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// ignore-spir
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// ignore-spir64
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// ignore-kalimba
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// ignore-shave
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// ignore-wasm32
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// ignore-wasm64
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// ignore-emscripten
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// compile-flags: -C no-prepopulate-passes
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#![feature(global_asm)]
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#![crate_type = "lib"]
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#[no_std]
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// CHECK-LABEL: foo
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// CHECK: module asm
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// CHECK: module asm "{{[[:space:]]+}}jmp baz"
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// any other global_asm will be appended to this first block, so:
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// CHECK-LABEL: bar
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// CHECK: module asm "{{[[:space:]]+}}jmp quux"
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global_asm!(r#"
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.global foo
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foo:
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jmp baz
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"#);
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extern "C" {
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fn foo();
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}
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// CHECK-LABEL: @baz
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#[no_mangle]
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pub unsafe extern "C" fn baz() {}
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// no checks here; this has been appended to the first occurrence
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global_asm!(r#"
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.global bar
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bar:
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jmp quux
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"#);
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extern "C" {
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fn bar();
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}
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#[no_mangle]
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pub unsafe extern "C" fn quux() {}

‎src/test/compile-fail/feature-gate-global_asm.rs

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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// gate-test-global_asm
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global_asm!(""); //~ ERROR `global_asm!` is not stable
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fn main() {}

‎src/test/run-pass/empty_global_asm.rs

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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(global_asm)]
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#[cfg(target_arch = "x86")]
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global_asm!("");
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#[cfg(target_arch = "x86_64")]
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global_asm!("");
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#[cfg(target_arch = "arm")]
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global_asm!("");
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#[cfg(target_arch = "aarch64")]
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global_asm!("");
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#[cfg(target_arch = "mips")]
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global_asm!("");
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fn main() {}

‎src/test/run-pass/simple_global_asm.rs

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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(global_asm)]
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#[cfg(any(target_arch = "x86_64", target_arch = "x86"))]
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global_asm!(r#"
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.global foo
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foo:
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jmp baz
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"#);
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extern {
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fn foo();
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}
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#[no_mangle]
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pub extern fn baz() {}
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fn main() {}

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