14 files changed, 382 insertions, 0 deletions
diff --git a/tests/codegen/unwind-abis/aapcs-unwind-abi.rs b/tests/codegen/unwind-abis/aapcs-unwind-abi.rs
new file mode 100644
index 000000000..c092e28a0
--- /dev/null
+++ b/tests/codegen/unwind-abis/aapcs-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: arm
+// compile-flags: --target=armv7-unknown-linux-gnueabihf --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `aapcs` and
+// `aapcs-unwind` extern functions. `aapcs-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "aapcs" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "aapcs-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs b/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs
new file mode 100644
index 000000000..ea5bae18e
--- /dev/null
+++ b/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs
@@ -0,0 +1,28 @@
+// compile-flags: -C panic=abort
+
+// Test that `nounwind` attributes are also applied to extern `C-unwind` Rust functions
+// when the code is compiled with `panic=abort`.
+
+#![crate_type = "lib"]
+#![feature(c_unwind)]
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr [[ATTR0:#[0-9]+]]
+#[no_mangle]
+pub unsafe extern "C-unwind" fn rust_item_that_can_unwind() {
+    // Handle both legacy and v0 symbol mangling.
+    // CHECK: call void @{{.*core9panicking19panic_cannot_unwind}}
+    may_unwind();
+}
+
+extern "C-unwind" {
+    // CHECK: @may_unwind() unnamed_addr [[ATTR1:#[0-9]+]]
+    fn may_unwind();
+}
+
+// Now, make sure that the LLVM attributes for this functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes [[ATTR0]] = { {{.*}}nounwind{{.*}} }
+//
+// Now, check that foreign item is correctly marked without the `nounwind` attribute.
+// CHECK-NOT: attributes [[ATTR1]] = { {{.*}}nounwind{{.*}} }
diff --git a/tests/codegen/unwind-abis/c-unwind-abi.rs b/tests/codegen/unwind-abis/c-unwind-abi.rs
new file mode 100644
index 000000000..e258dbcac
--- /dev/null
+++ b/tests/codegen/unwind-abis/c-unwind-abi.rs
@@ -0,0 +1,29 @@
+// compile-flags: -C opt-level=0
+
+// Test that `nounwind` attributes are correctly applied to exported `C` and `C-unwind` extern
+// functions. `C-unwind` functions MUST NOT have this attribute. We disable optimizations above
+// to prevent LLVM from inferring the attribute.
+
+#![crate_type = "lib"]
+#![feature(c_unwind)]
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "C" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "C-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/cdecl-unwind-abi.rs b/tests/codegen/unwind-abis/cdecl-unwind-abi.rs
new file mode 100644
index 000000000..19a722883
--- /dev/null
+++ b/tests/codegen/unwind-abis/cdecl-unwind-abi.rs
@@ -0,0 +1,29 @@
+// compile-flags: -C opt-level=0
+
+// Test that `nounwind` attributes are correctly applied to exported `cdecl` and
+// `cdecl-unwind` extern functions. `cdecl-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+#![crate_type = "lib"]
+#![feature(c_unwind)]
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "cdecl" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "cdecl-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/fastcall-unwind-abi.rs b/tests/codegen/unwind-abis/fastcall-unwind-abi.rs
new file mode 100644
index 000000000..b74099a5d
--- /dev/null
+++ b/tests/codegen/unwind-abis/fastcall-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `fastcall` and
+// `fastcall-unwind` extern functions. `fastcall-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "fastcall" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "fastcall-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/nounwind-on-stable-panic-abort.rs b/tests/codegen/unwind-abis/nounwind-on-stable-panic-abort.rs
new file mode 100644
index 000000000..106d593b2
--- /dev/null
+++ b/tests/codegen/unwind-abis/nounwind-on-stable-panic-abort.rs
@@ -0,0 +1,16 @@
+// compile-flags: -C opt-level=0 -Cpanic=abort
+// ignore-wasm32-bare compiled with panic=abort by default
+
+#![crate_type = "lib"]
+
+// We disable optimizations to prevent LLVM from inferring the attribute.
+
+// CHECK: Function Attrs:{{.*}}nounwind
+// CHECK-NEXT: @foo
+#[no_mangle]
+pub extern "C" fn foo() {}
+
+// CHECK: Function Attrs:{{.*}}nounwind
+// CHECK-NEXT: @bar
+#[no_mangle]
+pub fn bar() {}
diff --git a/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs b/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs
new file mode 100644
index 000000000..c1c5bbdda
--- /dev/null
+++ b/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs
@@ -0,0 +1,17 @@
+// compile-flags: -C opt-level=0
+// ignore-wasm32-bare compiled with panic=abort by default
+
+#![crate_type = "lib"]
+
+// We disable optimizations to prevent LLVM from inferring the attribute.
+
+extern "C" {
+    fn bar();
+}
+
+// CHECK-NOT: Function Attrs:{{.*}}nounwind
+pub unsafe extern "C" fn foo() {
+    bar();
+}
+
+// Note that this test will get removed when `C-unwind` is fully stabilized
diff --git a/tests/codegen/unwind-abis/nounwind.rs b/tests/codegen/unwind-abis/nounwind.rs
new file mode 100644
index 000000000..c46d71733
--- /dev/null
+++ b/tests/codegen/unwind-abis/nounwind.rs
@@ -0,0 +1,17 @@
+// compile-flags: -C opt-level=0 -Cpanic=abort
+// ignore-wasm32-bare compiled with panic=abort by default
+
+#![crate_type = "lib"]
+#![feature(c_unwind)]
+
+// We disable optimizations to prevent LLVM from inferring the attribute.
+
+// CHECK: Function Attrs:{{.*}}nounwind
+// CHECK-NEXT: @foo
+#[no_mangle]
+pub extern "C" fn foo() {}
+
+// CHECK: Function Attrs:{{.*}}nounwind
+// CHECK-NEXT: @bar
+#[no_mangle]
+pub fn bar() {}
diff --git a/tests/codegen/unwind-abis/stdcall-unwind-abi.rs b/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
new file mode 100644
index 000000000..8eff0719f
--- /dev/null
+++ b/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `stdcall` and `stdcall-unwind`
+// extern functions. `stdcall-unwind` functions MUST NOT have this attribute. We disable
+// optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "stdcall" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "stdcall-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/system-unwind-abi.rs b/tests/codegen/unwind-abis/system-unwind-abi.rs
new file mode 100644
index 000000000..2591c1d48
--- /dev/null
+++ b/tests/codegen/unwind-abis/system-unwind-abi.rs
@@ -0,0 +1,29 @@
+// compile-flags: -C opt-level=0
+
+// Test that `nounwind` attributes are correctly applied to exported `system` and `system-unwind`
+// extern functions. `system-unwind` functions MUST NOT have this attribute. We disable
+// optimizations above to prevent LLVM from inferring the attribute.
+
+#![crate_type = "lib"]
+#![feature(c_unwind)]
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "system" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "system-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/sysv64-unwind-abi.rs b/tests/codegen/unwind-abis/sysv64-unwind-abi.rs
new file mode 100644
index 000000000..694fde17c
--- /dev/null
+++ b/tests/codegen/unwind-abis/sysv64-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `sysv64` and
+// `sysv64-unwind` extern functions. `sysv64-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "sysv64" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "sysv64-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/thiscall-unwind-abi.rs b/tests/codegen/unwind-abis/thiscall-unwind-abi.rs
new file mode 100644
index 000000000..7e81367fc
--- /dev/null
+++ b/tests/codegen/unwind-abis/thiscall-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind, abi_thiscall)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `thiscall` and
+// `thiscall-unwind` extern functions. `thiscall-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "thiscall" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "thiscall-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs b/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs
new file mode 100644
index 000000000..d7eca2a97
--- /dev/null
+++ b/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind, abi_vectorcall)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `vectorcall` and
+// `vectorcall-unwind` extern functions. `vectorcall-unwind` functions MUST NOT have this attribute.
+// We disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "vectorcall" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "vectorcall-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }
diff --git a/tests/codegen/unwind-abis/win64-unwind-abi.rs b/tests/codegen/unwind-abis/win64-unwind-abi.rs
new file mode 100644
index 000000000..6591348c3
--- /dev/null
+++ b/tests/codegen/unwind-abis/win64-unwind-abi.rs
@@ -0,0 +1,31 @@
+// needs-llvm-components: x86
+// compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=rlib -Cno-prepopulate-passes
+#![no_core]
+#![feature(no_core, lang_items, c_unwind)]
+#[lang="sized"]
+trait Sized { }
+
+// Test that `nounwind` attributes are correctly applied to exported `win64` and
+// `win64-unwind` extern functions. `win64-unwind` functions MUST NOT have this attribute. We
+// disable optimizations above to prevent LLVM from inferring the attribute.
+
+// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
+#[no_mangle]
+pub extern "win64" fn rust_item_that_cannot_unwind() {
+}
+
+// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
+#[no_mangle]
+pub extern "win64-unwind" fn rust_item_that_can_unwind() {
+}
+
+// Now, make some assertions that the LLVM attributes for these functions are correct.  First, make
+// sure that the first item is correctly marked with the `nounwind` attribute:
+//
+// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
+//
+// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
+//
+// CHECK: attributes #1 = {
+// CHECK-NOT: nounwind
+// CHECK: }