Add initial asm!() support for hexagon

GPRs only
2020-06-09 15:08:28 -05:00 · 2020-06-09 15:08:28 -05:00 · 7a9f29d305
commit 7a9f29d305
parent bb8674837a
5 changed files with 264 additions and 3 deletions
--- a/src/test/assembly/asm/hexagon-types.rs
+++ b/src/test/assembly/asm/hexagon-types.rs
@ -0,0 +1,130 @@
+// no-system-llvm
+// assembly-output: emit-asm
+// compile-flags: --target hexagon-unknown-linux-musl
+
+#![feature(no_core, lang_items, rustc_attrs, repr_simd)]
+#![crate_type = "rlib"]
+#![no_core]
+#![allow(asm_sub_register, non_camel_case_types)]
+
+#[rustc_builtin_macro]
+macro_rules! asm {
+    () => {};
+}
+#[rustc_builtin_macro]
+macro_rules! stringify {
+    () => {};
+}
+
+#[lang = "sized"]
+trait Sized {}
+#[lang = "copy"]
+trait Copy {}
+
+type ptr = *const i32;
+
+impl Copy for i8 {}
+impl Copy for i16 {}
+impl Copy for i32 {}
+impl Copy for f32 {}
+impl Copy for ptr {}
+extern "C" {
+    fn extern_func();
+    static extern_static: u8;
+}
+
+macro_rules! check {
+    ($func:ident $ty:ident $class:ident) => {
+        #[no_mangle]
+        pub unsafe fn $func(x: $ty) -> $ty {
+            // Hack to avoid function merging
+            extern "Rust" {
+                fn dont_merge(s: &str);
+            }
+            dont_merge(stringify!($func));
+
+            let y;
+            asm!("{} = {}", out($class) y, in($class) x);
+            y
+        }
+    };
+}
+
+// CHECK-LABEL: sym_static:
+// CHECK: InlineAsm Start
+// CHECK: r0 = #extern_static
+// CHECK: InlineAsm End
+#[no_mangle]
+pub unsafe fn sym_static() {
+    // Hack to avoid function merging
+    extern "Rust" {
+        fn dont_merge(s: &str);
+    }
+    dont_merge(stringify!($func));
+
+    asm!("r0 = #{}", sym extern_static);
+}
+
+// CHECK-LABEL: sym_fn:
+// CHECK: InlineAsm Start
+// CHECK: r0 = #extern_func
+// CHECK: InlineAsm End
+#[no_mangle]
+pub unsafe fn sym_fn() {
+    // Hack to avoid function merging
+    extern "Rust" {
+        fn dont_merge(s: &str);
+    }
+    dont_merge(stringify!($func));
+
+    asm!("r0 = #{}", sym extern_func);
+}
+
+// This is a test for multi-instruction packets,
+// which require the escaped braces.
+//
+// CHECK-LABEL: packet:
+// CHECK: InlineAsm Start
+// CHECK: {
+// CHECK:   r{{[0-9]+}} = r0
+// CHECK:   memw(r1) = r{{[0-9]+}}
+// CHECK: }
+// CHECK: InlineAsm End
+#[no_mangle]
+pub unsafe fn packet() {
+    let val = 1024;
+    asm!("{{
+        {} = r0
+        memw(r1) = {}
+    }}", out(reg) _, in(reg) &val);
+}
+
+// CHECK-LABEL: ptr:
+// CHECK: InlineAsm Start
+// CHECK: r{{[0-9]+}} = r{{[0-9]+}}
+// CHECK: InlineAsm End
+check!(reg_ptr ptr reg);
+
+// CHECK-LABEL: reg_f32:
+// CHECK: InlineAsm Start
+// CHECK: r{{[0-9]+}} = r{{[0-9]+}}
+// CHECK: InlineAsm End
+check!(reg_f32 f32 reg);
+
+// CHECK-LABEL: reg_i32:
+// CHECK: InlineAsm Start
+// CHECK: r{{[0-9]+}} = r{{[0-9]+}}
+// CHECK: InlineAsm End
+check!(reg_i32 i32 reg);
+
+// CHECK-LABEL: reg_i8:
+// CHECK: InlineAsm Start
+// CHECK: r{{[0-9]+}} = r{{[0-9]+}}
+// CHECK: InlineAsm End
+check!(reg_i8 i8 reg);
+
+// CHECK-LABEL: reg_i16:
+// CHECK: InlineAsm Start
+// CHECK: r{{[0-9]+}} = r{{[0-9]+}}
+// CHECK: InlineAsm End
+check!(reg_i16 i16 reg);