2 files changed, 129 insertions, 0 deletions
diff --git a/tests/run-make/simd-ffi/Makefile b/tests/run-make/simd-ffi/Makefile
new file mode 100644
index 000000000..297353470
--- /dev/null
+++ b/tests/run-make/simd-ffi/Makefile
@@ -0,0 +1,47 @@
+include ../tools.mk
+
+TARGETS =
+ifeq ($(filter arm,$(LLVM_COMPONENTS)),arm)
+# construct a fairly exhaustive list of platforms that we
+# support. These ones don't follow a pattern
+TARGETS += arm-linux-androideabi arm-unknown-linux-gnueabihf arm-unknown-linux-gnueabi
+endif
+
+ifeq ($(filter x86,$(LLVM_COMPONENTS)),x86)
+X86_ARCHS = i686 x86_64
+else
+X86_ARCHS =
+endif
+
+# these ones do, each OS lists the architectures it supports
+LINUX=$(filter aarch64 mips,$(LLVM_COMPONENTS)) $(X86_ARCHS)
+ifeq ($(filter mips,$(LLVM_COMPONENTS)),mips)
+LINUX += mipsel
+endif
+
+WINDOWS=$(X86_ARCHS)
+# fails with: failed to get iphonesimulator SDK path: no such file or directory
+#IOS=i386 aarch64 armv7
+DARWIN=$(X86_ARCHS)
+
+$(foreach arch,$(LINUX),$(eval TARGETS += $(arch)-unknown-linux-gnu))
+$(foreach arch,$(WINDOWS),$(eval TARGETS += $(arch)-pc-windows-gnu))
+#$(foreach arch,$(IOS),$(eval TARGETS += $(arch)-apple-ios))
+$(foreach arch,$(DARWIN),$(eval TARGETS += $(arch)-apple-darwin))
+
+all: $(TARGETS)
+
+define MK_TARGETS
+# compile the rust file to the given target, but only to asm and IR
+# form, to avoid having to have an appropriate linker.
+#
+# we need some features because the integer SIMD instructions are not
+# enabled by-default for i686 and ARM; these features will be invalid
+# on some platforms, but LLVM just prints a warning so that's fine for
+# now.
+$(1): simd.rs
+	$$(RUSTC) --target=$(1) --emit=llvm-ir,asm simd.rs \
+                -C target-feature='+neon,+sse2' -C extra-filename=-$(1)
+endef
+
+$(foreach targetxxx,$(TARGETS),$(eval $(call MK_TARGETS,$(targetxxx))))
diff --git a/tests/run-make/simd-ffi/simd.rs b/tests/run-make/simd-ffi/simd.rs
new file mode 100644
index 000000000..d11cfd77c
--- /dev/null
+++ b/tests/run-make/simd-ffi/simd.rs
@@ -0,0 +1,82 @@
+// ensures that public symbols are not removed completely
+#![crate_type = "lib"]
+// we can compile to a variety of platforms, because we don't need
+// cross-compiled standard libraries.
+#![feature(no_core, auto_traits)]
+#![no_core]
+#![feature(repr_simd, simd_ffi, link_llvm_intrinsics, lang_items, rustc_attrs)]
+
+#[derive(Copy)]
+#[repr(simd)]
+pub struct f32x4(f32, f32, f32, f32);
+
+extern "C" {
+    #[link_name = "llvm.sqrt.v4f32"]
+    fn vsqrt(x: f32x4) -> f32x4;
+}
+
+pub fn foo(x: f32x4) -> f32x4 {
+    unsafe { vsqrt(x) }
+}
+
+#[derive(Copy)]
+#[repr(simd)]
+pub struct i32x4(i32, i32, i32, i32);
+
+extern "C" {
+    // _mm_sll_epi32
+    #[cfg(any(target_arch = "x86", target_arch = "x86-64"))]
+    #[link_name = "llvm.x86.sse2.psll.d"]
+    fn integer(a: i32x4, b: i32x4) -> i32x4;
+
+    // vmaxq_s32
+    #[cfg(target_arch = "arm")]
+    #[link_name = "llvm.arm.neon.vmaxs.v4i32"]
+    fn integer(a: i32x4, b: i32x4) -> i32x4;
+    // vmaxq_s32
+    #[cfg(target_arch = "aarch64")]
+    #[link_name = "llvm.aarch64.neon.maxs.v4i32"]
+    fn integer(a: i32x4, b: i32x4) -> i32x4;
+
+    // just some substitute foreign symbol, not an LLVM intrinsic; so
+    // we still get type checking, but not as detailed as (ab)using
+    // LLVM.
+    #[cfg(not(any(
+        target_arch = "x86",
+        target_arch = "x86-64",
+        target_arch = "arm",
+        target_arch = "aarch64"
+    )))]
+    fn integer(a: i32x4, b: i32x4) -> i32x4;
+}
+
+pub fn bar(a: i32x4, b: i32x4) -> i32x4 {
+    unsafe { integer(a, b) }
+}
+
+#[lang = "sized"]
+pub trait Sized {}
+
+#[lang = "copy"]
+pub trait Copy {}
+
+impl Copy for f32 {}
+impl Copy for i32 {}
+
+pub mod marker {
+    pub use Copy;
+}
+
+#[lang = "freeze"]
+auto trait Freeze {}
+
+#[macro_export]
+#[rustc_builtin_macro]
+macro_rules! Copy {
+    () => {};
+}
+#[macro_export]
+#[rustc_builtin_macro]
+macro_rules! derive {
+    () => {};
+}