1 files changed, 122 insertions, 0 deletions
diff --git a/tests/assembly-llvm/asm/arm-modifiers.rs b/tests/assembly-llvm/asm/arm-modifiers.rs
new file mode 100644
index 00000000000..32a36840492
--- /dev/null
+++ b/tests/assembly-llvm/asm/arm-modifiers.rs
@@ -0,0 +1,122 @@
+//@ add-core-stubs
+//@ assembly-output: emit-asm
+//@ compile-flags: -Copt-level=3 -C panic=abort
+//@ compile-flags: --target armv7-unknown-linux-gnueabihf
+//@ compile-flags: -C target-feature=+neon
+//@ compile-flags: -Zmerge-functions=disabled
+//@ needs-llvm-components: arm
+
+#![feature(no_core, repr_simd)]
+#![crate_type = "rlib"]
+#![no_core]
+#![allow(asm_sub_register, non_camel_case_types)]
+
+extern crate minicore;
+use minicore::*;
+
+#[repr(simd)]
+pub struct f32x4([f32; 4]);
+
+impl Copy for f32x4 {}
+
+macro_rules! check {
+    ($func:ident $modifier:literal $reg:ident $ty:ident $mov:literal) => {
+        // -Copt-level=3 and extern "C" guarantee that the selected register is always r0/s0/d0/q0
+        #[no_mangle]
+        pub unsafe extern "C" fn $func() -> $ty {
+            let y;
+            asm!(concat!($mov, " {0:", $modifier, "}, {0:", $modifier, "}"), out($reg) y);
+            y
+        }
+    };
+}
+
+// CHECK-LABEL: reg:
+// CHECK: @APP
+// CHECK: mov r0, r0
+// CHECK: @NO_APP
+check!(reg "" reg i32 "mov");
+
+// CHECK-LABEL: sreg:
+// CHECK: @APP
+// CHECK: vmov.f32 s0, s0
+// CHECK: @NO_APP
+check!(sreg "" sreg f32 "vmov.f32");
+
+// CHECK-LABEL: sreg_low16:
+// CHECK: @APP
+// CHECK: vmov.f32 s0, s0
+// CHECK: @NO_APP
+check!(sreg_low16 "" sreg_low16 f32 "vmov.f32");
+
+// CHECK-LABEL: dreg:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(dreg "" dreg f64 "vmov.f64");
+
+// CHECK-LABEL: dreg_low16:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(dreg_low16 "" dreg_low16 f64 "vmov.f64");
+
+// CHECK-LABEL: dreg_low8:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(dreg_low8 "" dreg_low8 f64 "vmov.f64");
+
+// CHECK-LABEL: qreg:
+// CHECK: @APP
+// CHECK: vorr q0, q0, q0
+// CHECK: @NO_APP
+check!(qreg "" qreg f32x4 "vmov");
+
+// CHECK-LABEL: qreg_e:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(qreg_e "e" qreg f32x4 "vmov.f64");
+
+// CHECK-LABEL: qreg_f:
+// CHECK: @APP
+// CHECK: vmov.f64 d1, d1
+// CHECK: @NO_APP
+check!(qreg_f "f" qreg f32x4 "vmov.f64");
+
+// CHECK-LABEL: qreg_low8:
+// CHECK: @APP
+// CHECK: vorr q0, q0, q0
+// CHECK: @NO_APP
+check!(qreg_low8 "" qreg_low8 f32x4 "vmov");
+
+// CHECK-LABEL: qreg_low8_e:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(qreg_low8_e "e" qreg_low8 f32x4 "vmov.f64");
+
+// CHECK-LABEL: qreg_low8_f:
+// CHECK: @APP
+// CHECK: vmov.f64 d1, d1
+// CHECK: @NO_APP
+check!(qreg_low8_f "f" qreg_low8 f32x4 "vmov.f64");
+
+// CHECK-LABEL: qreg_low4:
+// CHECK: @APP
+// CHECK: vorr q0, q0, q0
+// CHECK: @NO_APP
+check!(qreg_low4 "" qreg_low4 f32x4 "vmov");
+
+// CHECK-LABEL: qreg_low4_e:
+// CHECK: @APP
+// CHECK: vmov.f64 d0, d0
+// CHECK: @NO_APP
+check!(qreg_low4_e "e" qreg_low4 f32x4 "vmov.f64");
+
+// CHECK-LABEL: qreg_low4_f:
+// CHECK: @APP
+// CHECK: vmov.f64 d1, d1
+// CHECK: @NO_APP
+check!(qreg_low4_f "f" qreg_low4 f32x4 "vmov.f64");